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Selina solutions for Concise Chemistry Class 10 ICSE chapter 12 - Organic Chemistry [Latest edition]

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Concise Chemistry Class 10 ICSE - Shaalaa.com
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Chapter 12: Organic Chemistry

Intext QuestionsExercise 12AExercise 12BExercise 12CExercise 12DExercise 12EExercise 12FMiscellaneous
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Intext Questions[Page 188]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryIntext Questions[Page 188]

Intext Questions | Q 1.1 | Page 188

What are organic compounds?

Intext Questions | Q 1.2 | Page 188

What is the Vital force theory? Why was it discarded?

Intext Questions | Q 2.1 | Page 188

Name a few sources of organic chemistry ?

Intext Questions | Q 2.2 | Page 188

Give the various applications of organic chemistry ?

Intext Questions | Q 3 | Page 188

Organic chemistry plays a key role in all walks of life. Discuss

Intext Questions | Q 4 | Page 188

Carbon shows some unique properties, name them ?

Intext Questions | Q 5.1 | Page 188

Explain the following : Tetravalency 

Intext Questions | Q 5.2 | Page 188

Explain the following : Catenation 

Intext Questions | Q 6 | Page 188

Write any four properties of organic compounds that distinguish them from inorganic compounds.

Intext Questions | Q 7 | Page 188

Why are organic compounds studies as a separate branch of chemistry?

Intext Questions | Q 8 | Page 188

What are Hydrocarbons? Compare saturated and unsaturated hydrocarbons?

Intext Questions | Q 9 | Page 188

Give reason for the existence of the large number of organic compounds.

Intext Questions | Q 10.1 | Page 188

Give at least one example in case to show structure of isomers of single bond compound ?

Intext Questions | Q 10.2 | Page 188

Give at least one example in case to show structure of isomers of double bond compound ?

Intext Questions | Q 10.3 | Page 188

Give at least one example in case to show structure of isomers of triple bond compound ?

Intext Questions | Q 11.1 | Page 188

Name a compound and draw the figure
Cyclic compound with a single bond?

Intext Questions | Q 11.2 | Page 188

Name a compound and draw the figure
Cyclic compound with the triple bond?

Intext Questions | Q 12.1 | Page 188

Give the name of one member of the saturated hydrocarbons ?

Intext Questions | Q 12.2 | Page 188

Give the name of one member of the unsaturated hydrocarbons ?

Intext Questions | Q 13 | Page 188

Define the substitution and addition reaction. Give an example for each.

Intext Questions[Page 193]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryIntext Questions[Page 193]

Intext Questions | Q 1 | Page 193

Define a functional group and give the structural formula of the following functional group:

(a) Ketons

(b) Alcohols

(c) Aldehydes

Intext Questions | Q 2 | Page 193

Write the name and formula of the fourth member of the following homologous series:

  1. Alkyne
  2. Alcohol
Intext Questions | Q 3.1 | Page 193

Which part of an organic compound determines physical properties ?

Intext Questions | Q 3.2 | Page 193

Which part of an organic compound determines chemical properties ?

Intext Questions | Q 4 | Page 193

Name the alkyl radical and the functional group of the following organic compounds:

(a) CH3OH

(b) C2H5OH

(c) C3H7CHO

(d) C4H9COOH

(e) CH3COOH

(f) HCHO

Intext Questions | Q 5.1 | Page 193

What is an alkyl group?

Intext Questions | Q 5.2 | Page 193

Give the names of any three alkyl radicals. How are they formed?

Intext Questions | Q 6 | Page 193

Give the names and the structural formula of the first three members of the homologous series of alkanes.

Intext Questions | Q 7.1 | Page 193

What is a Homologous series?

Intext Questions | Q 7.2 | Page 193

What is the difference in the molecular formula of any two adjacent homologues:

(i) In terms of molecular mass

(ii) In terms of number and kind of atoms per molecule?

Exercise 12A[Pages 194 - 196]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryExercise 12A[Pages 194 - 196]

Exercise 12A | Q 1.01 | Page 194

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3 -C -CH3}\\
|\\
\ce{CH3}
\end{array}\]

Exercise 12A | Q 1.02 | Page 194

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3 -CH -CH2 -CH3}\\
|\phantom{.......}\\
\ce{CH3}\phantom{.......}
\end{array}\]

Exercise 12A | Q 1.03 | Page 194

Write the IUPAC name of the following :

\[\begin{array}{cc}
\ce{H\phantom{...}H\phantom{...}H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C = C - C -H}\\
\phantom{..........}|\\
\phantom{..........}\ce{H}
\end{array}\]

Exercise 12A | Q 1.04 | Page 194

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3}\phantom{.........}\\
|\phantom{.........}\\
\ce{H3C - C - CH2CH2CH3}\\
|\phantom{.........}\\
\ce{CH3}\phantom{.........}
\end{array}\]

Exercise 12A | Q 1.05 | Page 194

Write the IUPAC name of the following:

\[\ce{CH3 - C ≡ C - CH2 CH3}\]

Exercise 12A | Q 1.06 | Page 194

Write the IUPAC name of the following:

\[\begin{array}{cc}
\phantom{............}\ce{CH3}\\
\phantom{..........}|\\
\ce{H - C = C - C - H}\\
\phantom{..........}|\\
\phantom{.............}\ce{CH3}
\end{array}\]

Exercise 12A | Q 1.07 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{Cl}\phantom{.............}\\
|\phantom{.............}\\
\ce{CH3 - CH - CH - CH2 - CH3}\\
|\\
\ce{Cl}
\end{array}\]

Exercise 12A | Q 1.08 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3\phantom{...}CH3\phantom{.......}}\\
\phantom{..}|\phantom{.......}|\phantom{........}\\
\ce{CH2 - CH - CH2}\\
\phantom{...........}|\\
\phantom{.......................}\ce{CH2 CH2 CH3}
\end{array}\]

Exercise 12A | Q 1.09 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{H\phantom{..}H}\\
|\phantom{...}|\\
\ce{H3C - C=C - CH3}\\
\end{array}\]

Exercise 12A | Q 1.1 | Page 195

Write the IUPAC name of the following:

\[\ce{CH3 - C ≡ C - CH2 CH2 CH2 CH3}\]

Exercise 12A | Q 1.11 | Page 194

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3}\phantom{.............}\\
|\phantom{...............}\\
\ce{CH3 - C - CH2 CH2 CH2 CHO}\\
|\phantom{...............}\\
\ce{CH3}\phantom{............}
\end{array}\]

Exercise 12A | Q 1.12 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3 - CH - CH2 CH2 CH3}\\
|\phantom{............}\\
\ce{OH}\phantom{..........}
\end{array}\]

Exercise 12A | Q 1.13 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3 CH CH2 CH2 COOH}\\
|\phantom{..............}\\
\ce{CH3}\phantom{...........}
\end{array}\]

Exercise 12A | Q 1.14 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{CH3}\phantom{.....}\\
|\phantom{.....}\\
\ce{CH3 - C - CH2 CH3}\\
|\phantom{.....}\\
\ce{Br}\phantom{.....}
\end{array}\]

Exercise 12A | Q 1.15 | Page 195

Write the IUPAC name of the following :

\[\begin{array}{cc}
\ce{CH3}\phantom{.........}\\
|\phantom{...........}\\
\ce{CH3 - CH - CH2 - CH2Br}
\end{array}\]

Exercise 12A | Q 1.16 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{H}\phantom{.........}\\
|\phantom{.........}\\
\ce{H - C - C ≡ C - H}\\
|\phantom{.........}\\
\ce{H}\phantom{.........}
\end{array}\]

Exercise 12A | Q 1.17 | Page 195

Write the IUPAC name of the following :

\[\begin{array}{cc}
\ce{H - C = O}\\
|\\
\ce{H}
\end{array}\]

Exercise 12A | Q 1.18 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{H}\phantom{.........}\\
|\phantom{.........}\\
\ce{H - C - C ≡ C - H}\\
|\phantom{.........}\\
\ce{H}\phantom{.........}
\end{array}\]

Exercise 12A | Q 1.19 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{H\phantom{...}H\phantom{...}H\phantom{..}}\\
\phantom{..}|\phantom{....}|\phantom{....}|\phantom{....}\\
\ce{H - C - C - C - OH}\\
\phantom{..}|\phantom{....}|\phantom{....}|\phantom{....}\\
\ce{H\phantom{...}H\phantom{...}H\phantom{..}}\\
\end{array}\]

Exercise 12A | Q 1.2 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{\phantom{.....}H\phantom{...}O}\\
\phantom{.....}|\phantom{....}||\\
\ce{H - C - C}\\
\phantom{.....}|\phantom{....}|\\
\ce{\phantom{.......}H\phantom{...}OH}\\
\end{array}\]

Exercise 12A | Q 1.21 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{H\phantom{...}O}\\
|\phantom{....}||\\
\ce{H - C - C - H}\\
|\phantom{.....}\\
\ce{H}\phantom{.....}
\end{array}\]

Exercise 12A | Q 1.22 | Page 195

Write the IUPAC name of the following:

\[\begin{array}{cc}
\ce{H\phantom{...}H}\\
|\phantom{....}|\\
\ce{H - C - C - H}\\
|\phantom{....}|\\
\ce{Cl\phantom{...}Cl}\\\end{array}\]

Exercise 12A | Q 2.1 | Page 195

Write the structure of the following compound:

Prop-1-ene

Exercise 12A | Q 2.2 | Page 195

The Structure of the Following Compound :

2,3-dimethylbutane

Exercise 12A | Q 2.3 | Page 195

Write the structure of the following compound: 

2 – methylpropane  

Exercise 12A | Q 2.4 | Page 195

Write the structure of the following compound: 

3-hexene 

Exercise 12A | Q 2.5 | Page 195

Write the structure of the following compound: 

prop– 1 – yne 

Exercise 12A | Q 2.6 | Page 195

Write the structure of the following compound: 

2-methylprop – 1- ene

Exercise 12A | Q 2.7 | Page 195

Write the structure of the following compound: 

Alcohol with molecular formula C4H10O

Exercise 12A | Q 3.1 | Page 195

Choose the correct answer: 

C5H11 is an

  • alkane

  • alkene

  • Alkyne

  • Alkyl group

Exercise 12A | Q 3.2 | Page 195

Choose the correct answer: 

A hydrocarbon of the general CnH2n is

  • C15H30

  • C12H26

  • C8H20

  • C6H14

Exercise 12A | Q 3.3 | Page 195

Choose the correct answer: 

The total number of different carbon chains that four carbon atoms form in alkane is

  • 5

  • 4

  • 3

  • 2

Exercise 12A | Q 3.4 | Page 195

Choose the correct answer : 

CH3-CH2-OH and CH3-O-CH3 are

  • Position isomers

  • chain isomers 

  • homologous

  • functional group isomers

Exercise 12A | Q 3.5 | Page 195

The IUPAC name of the compound is

\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3 - CH2 - CH2 - CH - CH2 - CH3}
\end{array}\]

  • 3-trimethylhexane

  • 3- methyl hexane

  • 4 – methyl hexane 

Exercise 12A | Q 4.01 | Page 195

Fill in the blank: 

Propane and ethane are ____________ 

  • Homologues

  • isomers

Exercise 12A | Q 4.02 | Page 195

Fill in the blank: 

A saturated hydrocarbon does not participate in a/an _________ reaction. 

  • substitution

  • addition

Exercise 12A | Q 4.03 | Page 195

Fill in the blank: 

Succeeding members of a homologous series differ by ______________ 

  • CH

  • CH2

  • CH3

Exercise 12A | Q 4.04 | Page 195

Fill in the blank: 

As the molecular masses of hydrocarbons increase, their boiling points ________ and  melting point ____________

  • increase

  • decrease

Exercise 12A | Q 4.05 | Page 195

Fill in the blank :  

C25H52 and C50H102 belong to ______ homologous series.

  • the same

  • different

Exercise 12A | Q 4.06 | Page 195

Fill in the blank:  

CO is an__________ Compound. 

  • organic

  • inorganic

Exercise 12A | Q 4.07 | Page 196

Fill in the blanks: 

The chemical properties of an organic compound are largely decided by the ___________ and the physical properties of an organic compound are largely decided by the ___________ . (functional group, number of carbon atoms)

Exercise 12A | Q 4.08 | Page 196

Fill in the blank: 

CHO is the functional group of an __________. 

  • alcohol

  • aldehyde

Exercise 12A | Q 4.09 | Page 196

Fill in the blank: 

The root in the IUPAC name of an organic compound depends upon the number of carbon atoms in _____________ 

  • any chain

  • principal chain

Exercise 12A | Q 4.1 | Page 196

Fill in the blank: 

But-1-ene and but-2-ene are examples of ___________ isomerism. 

  • Chain

  • position

  • functional

Exercise 12A | Q 5 | Page 196

Define or explain chain isomerism and position isomerism with examples in each case.

Exercise 12A | Q 6.1 | Page 196

Define the term isomerism. State two main causes of isomerism.

Exercise 12A | Q 6.2 | Page 196

Draw the chain isomers of hexane (C6H14) .

Exercise 12A | Q 6.3 | Page 196

Draw position isomers of butane (C4H8) ?

Exercise 12A | Q 7.1 | Page 196

Draw the structural formula for the following compounds:

isomer of n-butane

Exercise 12A | Q 7.2 | Page 196

Draw the structural formula for the following compound: vinegar

Exercise 12A | Q 7.3 | Page 196

Draw the structural formula for the following compound: 2-propanol

Exercise 12A | Q 7.4 | Page 196

Draw the structural formula for the following compound: Ethanal

Exercise 12A | Q 7.5 | Page 196

Draw the structural formula for the following compound: acetone

Exercise 12A | Q 7.6 | Page 196

Draw the structural formula for the following compound: diethyl ether

Exercise 12A | Q 8.1 | Page 196

What is the special feature of the structure of (i) ethane (ii) ethyne

Exercise 12A | Q 8.2 | Page 196

what type of reaction is common to both the above compounds? Why methane does not undergo this type of reaction.

Exercise 12A | Q 8.3 | Page 196

What is IUPAC name of dimethyl ether.

Exercise 12A | Q 9.1 | Page 196

Which type of reaction will ethane undergo?

Exercise 12A | Q 9.2 | Page 196

Which type of reaction will Ethene undergo?

Exercise 12A | Q 10 | Page 196

Choosing only words from the following list, write down appropriate words to fill in the blanks from (a) to (e) given below. Addition, carbohydrates, CnH2n-2, CnH2n,CnH2n+2, electrochemical homologous, hydrocarbon, saturated, substitution, unsaturated.

The alkanes from an (a) ………… series with the general formula (b) ………….. The alkanes are (c) …………. (d) …………… which generally undergo (e) …………. reactions.

Exercise 12A | Q 11.1 | Page 196

Draw the structural formula of a compound with two carbon atoms in the following case.
An alkane with carbon to carbon single bond

Exercise 12A | Q 11.2 | Page 196

Draw the structural formula of a compound with two carbon atoms in the following case.
An alcohol containing two carbon atoms

Exercise 12A | Q 11.3 | Page 196

Draw the structural formula of a compound with two carbon atoms in the following case.
An unsaturated hydrocarbon with carbon to carbon  triple bond

Exercise 12A | Q 12.1 | Page 196

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol From the above, name
The compound with -OH as the part of its structure.

Exercise 12A | Q 12.2 | Page 196

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol From the above, name
The compound with -COOH as part of its structure.

Exercise 12A | Q 12.3 | Page 196

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol From the above, name Homologue of the homologous series with the general formula CnH2n.

Exercise 12A | Q 13.1 | Page 196

Give the correct IUPAC name and the functional group for the compounds whose structural formulae are given below:

\[\begin{array}{cc}
\ce{H\phantom{...}H\phantom{...}O}\\
\phantom{.}|\phantom{....}|\phantom{....}||\\
\ce{H - C - C - C - H}\\
\phantom{.}|\phantom{....}|\phantom{.....}\\
\ce{H\phantom{...}H\phantom{....}}
\end{array}\]

Exercise 12A | Q 13.2 | Page 196

Give the correct IUPAC name and the functional group for the compounds whose structural formulae are given below:

\[\begin{array}{cc}
\ce{H\phantom{...}H\phantom{...}H\phantom{..}}\\
|\phantom{....}|\phantom{....}|\phantom{..}\\
\ce{H - C - C - C - OH}\\
|\phantom{....}|\phantom{....}|\phantom{..}\\
\ce{H\phantom{...}H\phantom{...}H\phantom{..}}
\end{array}\]

Exercise 12A | Q 14 | Page 196

Copy and complete the following table which relates to three homologus series of hydrocarbons:

General formula CnH2n CnH2n-2 CnH2n+2
IUPAC name of the homologus series      
Characteristic bond type     Single bond
IUPAC name of the first member of the series      
Type of reaction with chlorine   Addition  
Exercise 12A | Q 15.1 | Page 196

Fill in the blanks with correct words from the brackets:

Alkenes are the (a) _______ (analogous/homologous) series of (b ) ______ (saturated /unsaturated) hydrocarbons. They differ from alkanes due to presence of (c) _______ (double/ single) bonds. Alkenes mainly undergo (d) ______ (addition/ substitution) reactions.

Exercise 12A | Q 15.2 | Page 196

Fill in the blank with the correct word 
The organic compound which undergoes substitution reaction is ___________

  • C2H2

  • C2H4

  • C10H18

  • C2H6

Exercise 12A | Q 15.3 | Page 196

Draw the structural formulae of the two isomers of Butane. Give the correct IUPAC name of each of the isomer.

Exercise 12A | Q 16.1 | Page 196

Name the saturated hydrocarbon containing two carbon atoms. 

Exercise 12A | Q 16.2 | Page 196

Name : An alcohol with three carbon atom.

Exercise 12A | Q 16.3 | Page 196

Name : A triple bond hydrocarbon with two carbon atoms.

Exercise 12B[Page 202]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryExercise 12B[Page 202]

Exercise 12B | Q 1 | Page 202

State the sources of Alkanes. 

Exercise 12B | Q 2 | Page 202

Methane is a greenhouse gas. comment. 

Exercise 12B | Q 3 | Page 202

Give the general formula of alkanes. 

Exercise 12B | Q 4.1 | Page 202

Draw the structures of isomers of : butane. Write the IUPAC and common names of these isomer.

Exercise 12B | Q 4.2 | Page 202

Draw the structures of isomer of : pentane. Write the IUPAC and common names of these isomer

Exercise 12B | Q 5 | Page 202

Write the

(a) Molecular formula

(b) Electron dot formula and

(c) The structural formula of methane and ethane

Exercise 12B | Q 6.1 | Page 202

How is methane prepared in the laboratory ?

Exercise 12B | Q 6.2 | Page 202

How is ethane prepared in the laboratory? 

Exercise 12B | Q 7 | Page 202

How are methane and ethane prepared from methyl iodide and ethyl bromide?

Exercise 12B | Q 8 | Page 202

What is the substitution reaction? Give the reaction of chlorine with ethane and name the product formed?

Exercise 12B | Q 9.1 | Page 202

Name the compounds formed when methane burns in : sufficient air, Give a balanced equation 

Exercise 12B | Q 9.2 | Page 202

Name the compounds formed when methane burns in:  insufficient air , Give a balanced equation 

Exercise 12B | Q 10.1 | Page 202

Write the names and formula of the products formed when Methane reacts with : (i) Chlorine (ii) bromine. Write the chemical equations.

Exercise 12B | Q 10.2 | Page 202

Write the names and formula of the products formed when Methane reacts with : (i) Chlorine (ii) bromine. Write the chemical equations.

Exercise 12B | Q 11.1 | Page 202

Name the compound prepared from: sodium propionate. Write the balanced equation for the same

Exercise 12B | Q 11.2 | Page 202

Name the compound prepared from methyl iodide . Write the balanced equation for the same

Exercise 12B | Q 11.3 | Page 202

Name the compound prepared from ethyl bromide write a balanced equation for the same.

Exercise 12B | Q 12 | Page 202

Write the equation for the complete combustion of (i) methane (ii) ethane.

Exercise 12B | Q 13.1 | Page 202

Convert: 

Methane into chloroform 

Exercise 12B | Q 13.2 | Page 202

Convert: 

sodium acetate into methane

Exercise 12B | Q 13.3 | Page 202

Convert: 

Methyl iodide into ethane

Exercise 12B | Q 13.4 | Page 202

Convert: Methane to methyl alcohol

Exercise 12B | Q 14.1 | Page 202

Give three uses of methane. 

Exercise 12B | Q 14.2 | Page 202

Give three uses of ethane. 

Exercise 12B | Q 15.1 | Page 202

Under what conditions does ethane gets converted to Ethyl alcohol

Exercise 12B | Q 15.2 | Page 202

Under what conditions does ethane get converted to acetaldehyde .

Exercise 12B | Q 15.3 | Page 202

Under what conditions does ethane gets converted to acetic acid 

Exercise 12B | Q 16 | Page 202

Using appropriate catalysts, ethane can be oxidized to an alcohol, an aldehyde and an acid. name the alcohol, aldehyde and acid formed when ethane is oxidized.

Exercise 12C[Page 206]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryExercise 12C[Page 206]

Exercise 12C | Q 1 | Page 206

Write (a) molecular formula, (b) electron dot formula and (c) structural formula of ethene (Ethylene).

Exercise 12C | Q 2.1 | Page 206

The molecules of the alkene family are represented by a general formula CnH2n. Answer the following:  What do n and 2n signify? 

Exercise 12C | Q 2.2 | Page 206

The molecules of the alkene family are represented by a general formula CnH2n. Answer the following :

what is the name of alkene when n = 4? 

Exercise 12C | Q 2.3 | Page 206

The molecules of the alkene family are represented by a general formula CnH2n. Answer the following :

What is the molecular formula of alkene when n = 4? 

Exercise 12C | Q 2.4 | Page 206

The molecules of the alkene family are represented by a general formula CnH2n. Answer the following :

what is the molecular formula of the alkene if there are ten H atoms in it? 

Exercise 12C | Q 2.5 | Page 206

The molecules of the alkene family are represented by a general formula CnH2n. Answer the following :

what is the structural formula of the third member of the alkene family? 

Exercise 12C | Q 2.6 | Page 206

The molecules of alkene family are represented by a general formula CnH2n. Answer the following :

write the molecular formula of lower and higher homologous of an alkene which contains four carbon atoms.

Exercise 12C | Q 3.1 | Page 206

Distinguish between the saturated hydrocarbon ethane and the unsaturated hydrocarbon ethene by drawing their structural formulae.

Exercise 12C | Q 3.2 | Page 206

Draw the structure of isomers of butane and write their IUPAC names.

Exercise 12C | Q 4 | Page 206

Give a balanced equation for the lab. Preparation of ethylene. How is the gas collected? 

Exercise 12C | Q 5.1 | Page 206

How is ethene prepared by dehydrohalogenation reaction? Give an equation and name the products formed.

Exercise 12C | Q 5.2 | Page 206

How is ethene prepared by dehydration reaction? Give an equation and name the products formed.

Exercise 12C | Q 6.1 | Page 206

Ethylene when reacts with halogens (chlorine and bromine) form saturated products. Name them and write balanced equations. 

Exercise 12C | Q 6.2 | Page 206

Give the conditions and the main products formed by hydrogenation of ethene. 

Exercise 12C | Q 7.1 | Page 206

Convert ethanol into ethene using Solid dehydrating agent .Give only balanced equations.

Exercise 12C | Q 7.2 | Page 206

Convert ethanol into ethene using Hot conc. H2SO4 .Give only balanced equation.

Exercise 12C | Q 8.1 | Page 206

Write the following properties of ethene: 

Physical state 

Exercise 12C | Q 8.2 | Page 206

Write the following properties of ethene: 

Odour 

Exercise 12C | Q 8.3 | Page 206

Write the following properties of ethene : 

Density as compared to air 

Exercise 12C | Q 8.4 | Page 206

Write the following properties of ethene: 

Solubility 

Exercise 12C | Q 9.1 | Page 206

How would you convert: 

ethyl bromide into ethene ? 

Exercise 12C | Q 9.2 | Page 206

How would you convert: 

ethene into 1, 2-dibromoethane? 

Exercise 12C | Q 9.3 | Page 206

How would you convert: ethene into ethane ?

Exercise 12C | Q 10.1 | Page 206

Give balanced equations when: 

ethene is burnt in excess of oxygen 

Exercise 12C | Q 10.2 | Page 206

Give balanced equations when: 

ethene reacts with chlorine gas.

Exercise 12C | Q 10.3 | Page 206

Give balanced equations when: 

ethene combines with hydrogen chloride 

Exercise 12C | Q 10.4 | Page 206

Give balanced equations when: 

A mixture of ethene and hydrogen is passed over nickel at 200° C. 

Exercise 12C | Q 11.1 | Page 206

Give the formula and name of A, B, C and D in the following equation: 

\[\ce{CH4 ->[Cl2][-HCl]A ->[Cl2][-HCl]B ->[Cl2][-HCl]C->[Cl2][-HCl]D}\]

Exercise 12C | Q 11.2 | Page 206

Give the formula and name of A, B ,C, and D in the following equation: 

 \[\ce{C2H2 ->[H2]A->[H2]B->[Br2][-HBr]C->[Br2][-HBr]D}\]

Exercise 12C | Q 11.3 | Page 206

Give the formula and name of A, B ,C and D in the following equation: 

\[\ce{C2H4 + B ->[200°C][Ni]C2H6}\]

Exercise 12C | Q 12.1 | Page 206

Write the name and formula of the product formed in the case below:  

C2H4 +Cl2 → ______

Exercise 12C | Q 12.2

Write the name and formula of the product formed in the case below: 

\[\ce{C2H5I + KOH(alc.)->[\Delta]}\]___________

Exercise 12C | Q 12.3 | Page 206

Write the name and formula of the product formed in the case below: 

\[\ce{H2C = CH2 ->[alk.KMnO4]}\]__________

Exercise 12C | Q 12.4 | Page 206

Write the name and formula of the product formed in the case below: 

\[\ce{H2C = CH2 + HBr →}\]___________

Exercise 12C | Q 13 | Page 206

What do you observe when ethene is passed through alkaline KMnO4 solution?

Exercise 12C | Q 14 | Page 206

Name three compounds formed by ethene and give one use of each compound.

Exercise 12D[Page 210]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryExercise 12D[Page 210]

Exercise 12D | Q 1 | Page 210

What are the sources for alkynes? Give the general formula of alkynes.

Exercise 12D | Q 2 | Page 210

Give an example of isomers shown by triple bond hydrocarbon (alkynes) and write its IUPAC name.

Exercise 12D | Q 3.1 | Page 210

Draw a diagram of acetylene prepared in the laboratory? 

Exercise 12D | Q 3.2 | Page 210

Give an equation of acetylene prepared in the laboratory ?

Exercise 12D | Q 3.3 | Page 210

How is pure dry gas collected acetylene prepared in the laboratory?

Exercise 12D | Q 4 | Page 210

Give the method of preparation of ethyne by 1, 2− dibromoethene.

Exercise 12D | Q 5.1 | Page 210

Name the hydrocarbon which is a tetrahedral molecule .

Exercise 12D | Q 5.2 | Page 210

Name the hydrocarbon which is a planar molecule .

Exercise 12D | Q 5.3 | Page 210

Name the hydrocarbon which is a linear molecule .

Exercise 12D | Q 5.4 | Page 210

Name the hydrocarbon which forms a red precipitate with ammoniacal solution of copper (I) chloride .

Exercise 12D | Q 5.5 | Page 210

Name the hydrocarbon which is known as paraffin .

Exercise 12D | Q 5.6 | Page 210

Name the hydrocarbon which is known as olefin .

Exercise 12D | Q 5.7 | Page 210

Name the hydrocarbon which:

A compound which will give acetylene (ethene) gas when treated with water.

Exercise 12D | Q 6.1 | Page 210

 Classify the compounds C3H4 as alkanes, alkenes and alkynes ?

Exercise 12D | Q 6.2 | Page 210

Classify the compounds C3H8 as alkanes, alkenes and alkynes ?

Exercise 12D | Q 6.3 | Page 210

Classify the compounds C5H8 as alkanes, alkenes and alkynes ?

Exercise 12D | Q 6.4 | Page 210

Classify the C3Hcompounds as alkanes, alkenes and alkynes ?

Exercise 12D | Q 7.1 | Page 210

Give a chemical test to distinguish between Saturated and Unsaturated?

Exercise 12D | Q 7.2 | Page 210

Give a chemical test to distinguish between of ethane and ethene ?

Exercise 12D | Q 7.3 | Page 210

Give a chemical test to distinguish between of ethene (ethylene) and ethyne (acetylene) ?

Exercise 12D | Q 8 | Page 210

Compound X bubbled through bromine dissolved in CCl4

\[\ce{X ->[Br2/CCl4]}\begin{array}{cc}\ce{H2C - Br}\\|\phantom{.-}\\\ce{H2C - Br}\end{array}\]

(a) Draw the structure of X.

(b) State your observation during the reaction.

Exercise 12D | Q 9.1 | Page 210

Give a balanced equation for the following conversation.

An alkene to an alkane

Exercise 12D | Q 9.2 | Page 210

Give a balanced equation for the following conversation.

An alkene to an alcohol

Exercise 12D | Q 9.3 | Page 210

Give a balanced equation for the following conversation.

An alkyne to an alkene

Exercise 12D | Q 10.1 | Page 210

Name the products formed and write an equation when ethyne is added to the following in an inert solvent:

Chlorine

Exercise 12D | Q 10.2 | Page 210

Name the products formed and write an equation when ethyne is added to the following in an inert solvent:
Bromine

Exercise 12D | Q 10.3 | Page 210

Name the products formed and write an equation when ethyne is added to the following in an inert solvent:

Iodine

Exercise 12D | Q 10.4 | Page 210

Name the products formed and write an equation when ethyne is added to the following in an inert solvent:

hydrogen

Exercise 12D | Q 10.5 | Page 210

Name the products formed and write an equation when ethyne is added to the following in an inert solvent:

excess of hydrochloric acid

Exercise 12D | Q 11 | Page 210

Substitution reactions are characteristic reactions of ___________

  • alkynes

  • alkenes

  • alkanes

Exercise 12D | Q 12.1 | Page 210

Write an equation for the laboratory preparation of

  1. An unsaturated hydrocarbon from calcium carbide.
  2. Alcohol from ethyl bromide.
Exercise 12D | Q 12.2 | Page 210

What would you see, when ethyne is bubbled through a solution of bromine in carbon tetrachloride?

Exercise 12D | Q 12.3 | Page 210

Name the addition product formed between ethene and water

Exercise 12D | Q 13.1 | Page 210

Give reason of ethyne is more reactive than ethene ?

Exercise 12D | Q 13.2 | Page 210

Give reason:

Ethene is more reactive then ethane.

Exercise 12D | Q 13.3 | Page 210

Give reason:

Hydrocarbons are excellent fuels.

Exercise 12D | Q 14.1 | Page 210

Write a balanced equation:

When butane is burnt in oxygen.

Exercise 12D | Q 14.1 | Page 210

Write a balanced equation:

Preparation of ethylene from ethyl alcohol.

Exercise 12D | Q 14.2 | Page 210

Write a balanced equation:

Convert ethane to acetic acid

Exercise 12D | Q 14.2 | Page 210

Write a balanced equation:

Convert ethyne to ethane

Exercise 12D | Q 15.1 | Page 210

Write the equation for the preparation of carbon tetrachloride from methane.

Exercise 12D | Q 15.2 | Page 210

Draw the structure formula of ethyne.

Exercise 12D | Q 15.3 | Page 210

How is the structure of alkynes different from that of alkenes?

Exercise 12E[Page 214]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryExercise 12E[Page 214]

Exercise 12E | Q 1.1 | Page 214

what are alcohols? State their sources.

Exercise 12E | Q 1.2 | Page 214

Give general formulae of monohydric alcohol?

Exercise 12E | Q 2.1 | Page 214

Give the Dot diagram of the first member of the alcohol

Exercise 12E | Q 2.2 | Page 214

Give the :  abbreviated formula of the third member of the alcohol

Exercise 12E | Q 2.3 | Page 214

Give the : Structure of the second member of the alcohol group

Exercise 12E | Q 2.4 | Page 214

Give the: structure of alcohol with 4 carbon atoms.

Exercise 12E | Q 3.1 | Page 214

State the method of preparation of ethanol by hydrolysis of ethane.

Exercise 12E | Q 3.2 | Page 214

State the method of preparation of ethanol by hydrolysis of ethyl bromide.

Exercise 12E | Q 4 | Page 214

Haloalkanes react with alkalies to produce alcohol. Give the equation for the preparation of the second member of the homologous series of alcohol. State under what condition the reaction occurs.

Exercise 12E | Q 5.1 | Page 214

How do the boiling point and melting point change in the homologous series of alcohols?

Exercise 12E | Q 5.2 | Page 214

Name the product formed when ethanol reacts with acetic acid. Give an equation.

What is the name given to this type of reaction?

Exercise 12E | Q 6.1 | Page 214

Complete and balanced the following equation. State the condition wherever necessary.

CH 

||| + H2 →  …………………. + H2  ………………… → 

CH

Exercise 12E | Q 6.2 | Page 214

Complete and balanced the following equation. State the condition wherever necessary.

C2H4 + Br2 →  ……………..

Exercise 12E | Q 6.3 | Page 214

Complete and balanced the following equation. State the condition wherever necessary.

C2H4 + HCl  → …………….

Exercise 12E | Q 6.4 | Page 214

Complete and balanced the following equation. State the condition wherever necessary.

CaC2 + H2O → …………….

Exercise 12E | Q 6.5 | Page 214

Complete and balanced the following equation. State the condition wherever necessary.

C2H2 + Br2 → ………………

Exercise 12E | Q 6.6 | Page 214

Complete and balanced the following equation. State the condition wherever necessary.

\[\ce{C2H5OH ->[O][K2Cr2O7]}\]____________

Exercise 12E | Q 7 | Page 214

What is the effect ethanol on human body.

Exercise 12E | Q 8.1 | Page 214

How are the absolute alcohol obtained ?

Exercise 12E | Q 8.2 | Page 214

How are the spurious alcohol obtained ?

Exercise 12E | Q 8.3 | Page 214

How are the methylated spirit obtained ?

Exercise 12E | Q 9.1 | Page 214

Name the products formed and give appropriate chemical equations for the sodium reacting with ethyl alcohol ?

Exercise 12E | Q 9.2 | Page 214

Name the products formed and give appropriate chemical equations for the Ethanol oxidized by acidified potassium dichromate ?

Exercise 12E | Q 10 | Page 214

Give the trivial (common) names and IUPAC names of the following:

(a) C3H6

(b) C2H4

(c) C2H2

(d) CH3OH

(e) C2H5OH

Exercise 12E | Q 11 | Page 214

Ethanol can be oxidized to ethanoic acid. Write the equation and name the oxidizing agent.

Exercise 12E | Q 12.1 | Page 214

Name an organic compound which is used for illuminating country houses ?

Exercise 12E | Q 12.2 | Page 214

Name an organic compound which is Used for making a household plastic material ?

Exercise 12E | Q 12.3 | Page 214

Name an organic compound which is Called 'wood spirit' ?

Exercise 12E | Q 12.4 | Page 214

Name an organic compound which is Poisonous and contains OH group ?

Exercise 12E | Q 12.5 | Page 214

Name an organic compound which is Consumed as a drink ?

Exercise 12E | Q 12.6 | Page 214

Name an organic compound which is Made from water gas ?

Exercise 12E | Q 12.7 | Page 214

Name an organic compound which is: solvent for gums and resins.

Exercise 12E | Q 12.8 | Page 214

Name an organic compound which is: dehydrated to produce ethene.

Exercise 12E | Q 13 | Page 214

Ethanol can be converted into ethene which can be changed into ethane. Choose the correct
word or phrase from the brackets to complete the following sentences.
(a) The conversion of ethanol into ethene is an example of ___________
(b) Converting ethanol into ethene requires the use of ___________
(c) The conversion of ethene into ethane is an example of ___________
(d) The catalyst used in the conversion of ethene into ethane is commonly ___________

Exercise 12E | Q 14.1 | Page 214

Write the equation of the following laboratory preparations:

Ethane from sodium propionate

Exercise 12E | Q 14.2 | Page 214

Write the equation of the following laboratory preparations:

Ethene from iodoethane

Exercise 12E | Q 14.3 | Page 214

Write the equation for the following lab preparations:
Ethyne from Calcium carbide

Exercise 12E | Q 14.4 | Page 214

Write the equation for the following lab preparations:
Methanol from Iodomethane.

Exercise 12E | Q 15.1 | Page 214

Name the compound prepared by the following reaction:

C2H5COONa +NaOH → 

Exercise 12E | Q 15.2 | Page 214

Name the compound prepared by the following reaction:
CH3I +2H → 

Exercise 12E | Q 15.3 | Page 214

Name the compound prepared by the following reaction:
C2H5Br +KOH (alcoholic solution) → 

Exercise 12E | Q 15.4 | Page 214

Name the compound prepared by the following reaction:
CO + 2H2 (Zinc oxide catalyst) →

Exercise 12E | Q 15.5 | Page 214

Name the compound prepared by the following reaction:
CaC2 + 2H2O → 

Exercise 12E | Q 16.1 | Page 214

Write the equation for the following reaction:
Calcium carbide and water

Exercise 12E | Q 16.2 | Page 214

Write the equation for the following reaction:
Ethene and water (steam)

Exercise 12E | Q 16.3 | Page 214

Write the equation for the following reaction:
Bromoethane and an aqueous solution of sodium hydroxide

Exercise 12F[Page 217]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryExercise 12F[Page 217]

Exercise 12F | Q 1 | Page 217

What are carboxylic acids? Give their general formula?

Exercise 12F | Q 2.1 | Page 217

Write the names of First three members of carboxylic acids series

Exercise 12F | Q 2.2 | Page 217

Write the names of three compounds that can be oxidized directly or in stages to produce acetic acid.

Exercise 12F | Q 3 | Page 217

Give the structural formulae of acetic acid? IUPAC name of acetic acid. What is glacial acetic acid?

Exercise 12F | Q 4 | Page 217

Vinegar is greyish in colour with a particular taste. Explain.

Exercise 12F | Q 5.1 | Page 217

Complete:

Vinegar is prepared by the bacterial oxidation of …………….

Exercise 12F | Q 5.2 | Page 217

Complete :

The organic acid present in vinegar is ……………………..

Exercise 12F | Q 5.3 | Page 217

Complete:

The next higher homologue of ethanoic acid is …………………

Exercise 12F | Q 6.1 | Page 217

How is acetic acid prepared from ethanol?

Exercise 12F | Q 6.2 | Page 217

How is acetic acid prepared from acetylene?

Exercise 12F | Q 7.1 | Page 217

What do you notice when acetic acid reacts with litmus ?

Exercise 12F | Q 7.2 | Page 217

What do you notice when acetic acid reacts with metals ?

Exercise 12F | Q 7.3 | Page 217

What do you notice when acetic acid reacts with alkalies ?

Exercise 12F | Q 7.4 | Page 217

What do you notice when acetic acid reacts with alcohol ?

Exercise 12F | Q 8.1 | Page 217

Acetic acid is a typical acid. Write one equation in case of its reactions with a metal?

Exercise 12F | Q 8.2 | Page 217

Acetic acid is a typical acid. Write one equation in case of its reactions with a base/alkali?

Exercise 12F | Q 8.3 | Page 217

Acetic acid is a typical acid. Write one equation in case of its reactions with A carbonate?

Exercise 12F | Q 8.4 | Page 217

Acetic acid is a typical acid. Write one equation in case of its reactions with A bicarbonate?

Exercise 12F | Q 9.1 | Page 217

What do you observe when acetic acid is added to sodium bicarbonate ?

Exercise 12F | Q 9.2 | Page 217

What do you observe when acetic acid is added to ethyl alcohol in the presence of sulphuric acid ?

Exercise 12F | Q 9.3 | Page 217

What do you observe when acetic acid is added to a neutral FeCl3 solution?

Exercise 12F | Q 10.1 | Page 217

Name the compound formed when acetic acid and ethanol react together?

Exercise 12F | Q 10.2 | Page 217

Name the reducing agent used to convert acetic acid into ethanol?

Exercise 12F | Q 10.3 | Page 217

Name the substance used to change acetic acid to acetic anhydride?

Miscellaneous[Page 217]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 12 Organic ChemistryMiscellaneous[Page 217]

Miscellaneous | Q 1.1 | Page 217

Which of the following statements is wrong about alkanes?

  • They are all saturated hydrocarbons.

  • They can undergo addition as well as substitution reactions.

  • They are almost non-polar in nature.

  • On complete combustion, they give out carbon dioxide and water.

Miscellaneous | Q 1.2 | Page 217

The organic compound obtained as the end product of the fermentation of sugar solution is

  • Methanol

  • Ethanol

  • Ethane

  • Methanoic acid

Miscellaneous | Q 1.3 | Page 217

Find the odd one out and explain :

  • C3H8

  •  C5H10

  • C2H6

  • CH4

Miscellaneous | Q 2.1 | Page 217

Give the chemical equation for :

The laboratory preparation of methane from sodium acetate.

Miscellaneous | Q 2.2 | Page 217

Give the chemical equation for :
The reaction of one mole of ethene with one mole of chlorine gas.

Miscellaneous | Q 2.3 | Page 217

Give the chemical equation for :
The preparation of ethyne from 1, 2-dibromoethane.

Miscellaneous | Q 3.1 | Page 217

State how the following conversion can be carried out:

Ethyl chloride to ethyl alcohol

Miscellaneous | Q 3.2 | Page 217

State how the following conversion can be carried out:

Ethyl chloride to ethene

Miscellaneous | Q 3.3 | Page 217

State how the following conversion can be carried out:

Ethene to ethyl alcohol

Miscellaneous | Q 3.4 | Page 217

State how the following conversion can be carried out:

Ethyl alcohol to ethene

Miscellaneous | Q 4.1 | Page 217

Define isomerism.

Miscellaneous | Q 4.2 | Page 217

Give the IUPAC name of the isomer C4H10 which has a branched-chain.

Miscellaneous | Q 5 | Page 217

A compound X when treated with an organic acid Y (having vinegar-like smell) in the presence of the acid Z, forms a compound P which has a fruity smell.

(a) Identify X, Y, and Z

(b) Write the structural formula of X and Y.

(c) What type of compound P is?

(d)Name the above reaction.

(e) If compound X and Y both have 2 carbon atoms. Write the reaction.

Chapter 12: Organic Chemistry

Intext QuestionsExercise 12AExercise 12BExercise 12CExercise 12DExercise 12EExercise 12FMiscellaneous
Concise Chemistry Class 10 ICSE - Shaalaa.com

Selina solutions for Concise Chemistry Class 10 ICSE chapter 12 - Organic Chemistry

Selina solutions for Concise Chemistry Class 10 ICSE chapter 12 (Organic Chemistry) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Chemistry Class 10 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Chemistry Class 10 ICSE chapter 12 Organic Chemistry are Uses of Acetic Acid, Chemical Properties of Acetic Acid, Concept of Acetic Acid, Concept of Ethanol, Hydrocarbons - Alkynes, Hydrocarbons - Alkenes,, Hydrocarbons - Alkanes, Simple Nomenclature, Structure of Compounds with Single, Double and Triple Bonds, Special Features of Carbon, Organic Compounds, Homologous Series of Carbon Compound.

Using Selina Class 10 solutions Organic Chemistry exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 10 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 12 Organic Chemistry Class 10 extra questions for Concise Chemistry Class 10 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

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