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# Selina solutions for Class 10 Chemistry chapter 12 - Organic Chemistry

## Selina ICSE Concise Chemistry for Class 10

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## Chapter 12: Organic Chemistry

#### Chapter 12: Organic Chemistry solutions [Page 0]

Write the IUPAC name of the following:

Write the IUPAC name of the following:

Write the IUPAC name of the following:

Write the IUPAC name of the following:

Write the structure of the following compounds:

Prop-1-ene,

Write the structure of the following compound:

2 – methyl propane

Write the structure of the following compound:

2 – methyl propane

Write the IUPAC name of the following:

Write the structure of the following compound:

2 – methyl propane

Write the structure of the following compound:

3-hexene

Write the IUPAC name of the following:

Write the structure of the following compound:

prop– 1 – yne

Write the structure of the following compound:

2-methylprop – 1- ene,

Write the structure of the following compound:

Alcohol with molecular formula C_4H_10O

Choose the correct answer:

C_5 H_11 is an

(i) alkane (ii) alkene (iii) alkyne (iv) alkyl group

Choose the correct answer:

A hydrocarbon of the general CnH2n is
(1) C15H30    2) C12H26.
(3) C8H20      (4) C6H14

Choose the correct answer:

A hydrocarbon with molecular mass 72 is
(i) an alkane (ii) an alkene (iii) an alkyne

Choose the correct answer:

The total number of different carbon chains that four carbon atoms form in alkane is
(i) 5 (ii) 4 (iii) 3 (iv) 2

Choose the correct answer :

CH_3 – CH_2 – OH and CH_3 – O – CH_3 are
(i) position isomers (ii) chain isomers
(iii) homologous (iv) functional – group isomers

The IUPAC name of the compound is

(i) 3-trimethylhexane (ii) 3- methyl hexane (iii) 4 – methyl hexane

Fill in the blank:

Propane and ethane are ____________

Fill in the blank:

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

Fill in the blank:

Succeeding members of a homologous series differ by ______________

Fill in the blank:

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

Fill in the blank :

C_25H_52 and C_50H_102 belong to _______________ homologous series.

Fill in the blank:

CO is an__________ Compound.

Fill in the blank:

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 ___________

Fill in the blank:

CHO is the functional group of an __________.

Fill in the blank:

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

Fill in the blank:

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

#### Chapter 12: Organic Chemistry solutions [Page 0]

State the sources of Alkanes.

Methane is a greenhouse gas comment.

Give the general formula of alkanes.

Draw the structures of isomers of:
(a) butane

Draw the structures of isomers of :

pentane

Write the IUPAC and common names of these isomers

Write the molecular formula

Write the:

electron dot formula

Write the  structural formula of methane and ethane.

How is: methane ?

How is ethane prepared in the laboratory?

How are methane and ethane prepared from methy1 iodide and ethyl bromide?

What is a substitution reaction?

Give the reaction of chlorine with ethane and name the product formed.

Name the compounds formed when methane burns in:

sufficient air, Give a balanced equation

Name the compounds formed when methane burns in:

insufficient air Give a balanced equation

Write the names and the formula of the products formed when

methane Reacts with chlorine Write the chemical equations

Write the names and the formula of the products formed when methane

Reacts with bromine Write the chemical equations

Write the names and the formula of the products formed when ethane Reacts with chlorine Write the chemical equations

Write the names and the formula of the products formed when ethane Reacts with bromine Write the chemical equations

Name the compound prepared from:

sodium propionate

Name the compound prepared from methyl iodide

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

What is pyrolysis or cracking? Explain with example.

Convert:

Methane into chloroform

Convert:

sodium acetate into methane

Convert:

Methyl iodide into ethane

Convert:

Aluminum carbide into methane

Give three uses of methane .

Give three uses of ethane.

Under what conditions does ethane get converted to ethyl alcohol.

Under what conditions does ethane get converted to acetaldehyde

Under what conditions does ethane get converted to acetic acid

Give the inter-relationship of methane, methyl alcohol, formaldehyde and formic acid with conditions

#### Chapter 12: Organic Chemistry solutions [Page 0]

Write the  molecular formula

Write the  electron dot formula

Write structural formula of ethane (ethylene)

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

What do n and 2n signify?

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

what is the name of alkene when n = 4?

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

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

The molecules of 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?

The molecules of 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?

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.

Discuss isomers in double bond compounds taking example of butane. Draw their structures and write IUPAC names.

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

How is ethane prepared by dehydrohalogenation reaction  Give equations and name the products formed.

How is ethane prepared by dehydration reaction? Give equations and name the products formed.

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

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

Write the following properties of ethene:

Physical state

Write the following properties of ethene:

Odour

Give balanced equations when:

ethene combines with hydrogen chloride

Write the following properties of ethene :

Density as compared to air

Write the following properties of ethene:

Solubility

How would you convert:

ethene into 1, 2-dibromoethane?

How would you convert:

ethene into ethyl brominde?

Give balanced equations when:

ethene is burnt in excess of oxygen

Give balanced equations when:

ethene reacts with chlorine

Give balanced equations when:

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

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

CH_4

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

C_2H_2

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

C_2H_4 + Cl_2 → A

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

C_2H_4 + B   C_2H_6

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

C_2H_4 + Cl_2 →…………….

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

C_2H_5Br + KOH (alc.)……….

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

H2C = CH2   ………………

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

H_2C = CH_2 + HBr…………….

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

H2_C = CH_2 + O3 →…………….

What do you observe when ethylene is passed through alkaline KMnO_4 solution?

Name three compounds formed by ethylene and give the use of these compounds.

#### Chapter 12: Organic Chemistry solutions [Page 0]

What are the sources for alkynes?

Give the general formula of alkynes ?

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

Draw a diagram of acetylene prepared in the laboratory?

Give an equation of acetylene prepared in the laboratory ?

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

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

Classify the compounds C3H4 as alkanes, alkenes and alkynes ?

Classify the compounds C3H8 as alkanes, alkenes and alkynes ?

Classify the compounds C5H8 as alkanes, alkenes and alkynes ?

Classify the C3Hcompounds as alkanes, alkenes and alkynes ?

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

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

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

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

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

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

Name the hydrocarbon which is a tetrahedral molecule .

Name the hydrocarbon which is a planar molecule .

Name the hydrocarbon which is a linear molecule .

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

Name the hydrocarbon which is known as paraffin .

Name the hydrocarbon which is known as olefin .

#### Chapter 12: Organic Chemistry solutions [Page 0]

what are alcohols? State their sources.

give general formulae of monohydric alcohol ?

Give the Dot diagram .

Give the Abbreviated formula .

Give the Structure ?

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

State the method of preparation of ethanol by hydrolysis of alkyl halide.

How is ethanol prepared by fermentation?

Give the lab. Prepared of ethyl alcohol .

Give the lab. Prepared of methyl alcohol.

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

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

What is the name given to this type of reaction?

What is the effect ethanol on human body.

How are the absolute alcohol obtained ?

How are the spurious alcohol obtained ?

How are the methylated spirit obtained ?

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

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

Give the trivial (common) names and the IUPAC names of the C3H6 ?

Give the trivial (common) names and the IUPAC names of the C2H?

Give the trivial (common) names and the IUPAC names of the C2H2 ?

Give the trivial (common) names and the IUPAC names of the CH3OH ?

Give the trivial (common) names and the IUPAC names of the C2H5OH ?

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

Complete and balanced the following equations. State the conditions wherever necessary.

CH

||| + H2 →  …………………. + H2  ………………… →

CH

Complete and balanced the following equations. State the conditions wherever necessary.

C2H4 + Cl2 →  ……………..

Complete and balanced the following equations. State the conditions wherever necessary.

C2H4 + HCl  → …………….

Complete and balanced the following equations. State the conditions wherever necessary.

CaC2 + H2O → …………….

Complete and balanced the following equations. State the conditions wherever necessary.

C2H2 + Br2 → ………………

Complete and balanced the following equations. State the conditions wherever necessary.

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

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

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

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

Name an organic compound which is Consumed as a drink ?

Name an organic compound which is Made from water gas ?

#### Chapter 12: Organic Chemistry solutions [Page 0]

What are carboxylic acids?

Give their general formula of carboxylic acids ?

Write the common name, IUPAC name and formula of one monocarboxylic acid and one
dicarboxylic acid ?

Write the names of First three members of carboxylic acids series ?

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

Vinegar is greyish in colour with a particular taste Explain.

Give the structural formulae of acetic acid ?

Give the IUPAC name of acetic acid ?

What is glacial acetic acid ?

Complete:

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

Complete :

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

Complete:

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

How is acetic prepared from ethanol ?

How is acetic prepared from acetylene ?

What do you notice when acetic acid reacts with litmus ?

What do you notice when acetic acid reacts with metals ?

What do you notice when acetic acid reacts with alkalies ?

What do you notice when acetic acid reacts with alcohol ?

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

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

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

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

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

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

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

Give two tests to show that CH3COOH is acidic in nature ?

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

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

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

#### Chapter 12: Organic Chemistry solutions [Page 0]

Draw structural formula of the compound isomer of n-butane ?

What is used to describe these compounds taken together?

Draw structural formula of the following compound vinegar ?

What is used to describe these compounds taken together?

Draw structural formula of the following compound 2-propanol ?

What is used to describe these compounds taken together?

Draw structural formula of the following compound ethanal ?

What is used to describe these compounds taken together?

Draw structural formula of the following compound acetone ?

What is used to describe these compounds taken together?

(a)What is the special feature of the structure of : (i) C2H4 (ii) C2H2
(b) what type of reaction is common to both these compounds? Why methane does not
undergo this type of reaction.

Give the names and structural formula of saturated hydrocarbon ?

Which type of reaction will they undrgo?

Give the name and structural formula of unsaturated hydrocarbon ?

Which type of reaction will they undrgo?

Write an equation for the laboratory preparation of (i) an unsaturated hydrocarbon from calcium carbide. (ii) an alcohol from ethyl bromide.

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

Name the addition product formed between ethene and water.

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 form an (a) ___________ series with the general formula (b) __________ The
alkanes are (c____________ (d)__________ which generally undergo (e) ________ reactions.

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 ___________

Give reason of ethyne is more reactive than ethene ?

Give reason Ethene is more reactive than ethane ?

Give reason Hydrocarbons are excellent fuels ?

#### Chapter 12: Organic Chemistry solutions [Page 0]

What do you understand by organic chemistry?

Why was vital force theory discarded ?

What is vital force theory?

Name a few sources of organic chemistry ?

Give the various applications of organic chemistry ?

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

Carbon shows some unique properties, name them ?

Explain the Tetravalency ?

Explain the Catenation ?

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

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

What are hydrocarbons?

Compare saturated and unsaturated hydrocarbons?

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

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

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

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

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

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

Give the name of one member of the saturated hydrocarbons ?

Give the name of one member of the unsaturated hydrocarbons ?

Define substitution and addition reaction.

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

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

Draw the chain isomers of hexane (C6H12) .

Draw position isomers of butane (C4H8) ?

Define a functional group ?

Give the structural formula of the aldehydes ?

Give the structural formula of the Ketone ?

Give the structural formula of the alcohols ?

Identify the functional group of the CH3OH ?

Identify the functional group of the HCHO ?

Identify the functional group of the CH3COOH ?

What will be the formula and structure of benzene?

Which part of an organic compound determines physical properties ?

Which part of an organic compound determines chemical properties ?

Name the alkyl radical and the functional group of the following organic compound CH3OH ?

Name the alkyl radical and the functional group of the following organic compound of C2H5OH ?

Name the alkyl radical and the functional group of the following organic compound C3H7CHO ?

Name the alkyl radical and the functional group of the following organic compound C4H9COOH ?

What is an alkyl group?

How are the formed alkyl radicals ?

Give the names of any three alkyl radicals ?

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

What is homologous series ?

What is the difference in the molecular formula of any two adjacent homologues in terms of molecular mass ?

What is the difference in the molecular formula of any two adjacent homologues in terms of number and kind of atoms per molecule ?

## Selina solutions for Class 10 Chemistry chapter 12 - Organic Chemistry

Selina solutions for Class 10 Chemistry 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 Selina ICSE Concise Chemistry for Class 10 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing 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 Class 10 Chemistry 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, Homologous Series, Structure of Compounds with Single, Double and Triple Bonds, Unique Nature of Carbon Atom, Concept of Organic Compounds.

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.

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