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# Frank solutions for Class 10 Chemistry chapter 12 - Carboxylic Acid

## Chapter 12: Carboxylic Acid

Exercise

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 290]

Exercise | Q 1 | Page 290

Write the molecular formulae and structure formula of ethanic acid?

Exercise | Q 2 | Page 290

What is vinegar and glacial acetic acid?

Exercise | Q 3 | Page 290

Write three physical properties of acetic acid.

Exercise | Q 4 | Page 290

Write the important uses of acetic acid.

Exercise | Q 5 | Page 290

What is the main constituent of vinegar?

Exercise | Q 6 | Page 290
What is the result of oxidation of ethyl alcohol?
Exercise | Q 7 | Page 290

What is the action of acetic acid with litmus paper?

Exercise | Q 8 | Page 290

What is thr boilng point of acetic acid?

Exercise | Q 9 | Page 290

Define glacial acetic acid?

Exercise | Q 10 | Page 290

Name the first four members of alphatic carboxylic acid.

Exercise | Q 11.1 | Page 290

How will you carry out the following conversions?

Ethene to acetic acid

Exercise | Q 11.2 | Page 290

How Will You Carry Out the Following Conversions?

Ehane to acitic acid

Exercise | Q 12.01 | Page 290

Fill in the blank with appropriate word/words.

Vinegar is a solution of about ________per cent ________in water.

Exercise | Q 12.02 | Page 290

Fill in the blank with appropriate word/words.

The general formula for alkene and alkyne are _____ and______respectively

Exercise | Q 12.03 | Page 290

Fill in the blank with appropriate word/words.

The catalyst used for hydrogen of vegetable oil is ___________

Exercise | Q 12.04 | Page 290

Fill in the blank with appropriate word/words.

For artificial ripening of fruits _________is used.

Exercise | Q 12.05 | Page 290

Fill in the blank with appropriate word/words.

Bayer's reagent is _________

Exercise | Q 12.06 | Page 290

Fill in the blank with appropriate word/words.

Esterification is the reaction between carboxylic acid and ______ in presence of ____

Exercise | Q 12.07 | Page 290

Fill in the blank with appropriate word/words.

Denatured alcohol is a mixture of _____ and _______

Exercise | Q 12.08 | Page 290

Fill in the blank with appropriate word/words.

For test of unsaturation _____is used.

Exercise | Q 12.09 | Page 290

Fill in the blank with appropriate word/words.

In laboratory ethyne is prepared by the reaction of water an _________

Exercise | Q 12.1 | Page 290

Fill in the blank with appropriate word/words.

Two isomers of the compound having molecular formula C3H6O are __________and ________

Exercise | Q 13.1 | Page 290

Compounds having the same molecular formula but different properties are called

• Isotopes

• Isomers

• Isobars

• Allotrops

Exercise | Q 13.2 | Page 290

The first organic compound prepared by Wohler in the laboratory was

• acetic acid

• methane

• Acetylene

• Urea

Exercise | Q 13.3 | Page 290

Soda-lime is a mixture of

• NaOH + CaCl2

• NaOH + CaCO3

• NaOH + CaO

• NaOH + Al2O3

Exercise | Q 13.4 | Page 290

When sodium propionate is heated with soda-lime, the product formed is

• Methane

• Ethane

• Ethene

• Ethyne

Exercise | Q 13.5 | Page 290

LPG contains

• Methane

• Ethane

• Butane

• None of these

Exercise | Q 13.6 | Page 290

Methane reacts with energy of chlorine in diffused sunlight to give the final product as

• Chloroform

• Carbon tetrachloride

• Methylene chloride

• Methyl chloride

Exercise | Q 13.7 | Page 290

Ethene reacts with 1% cold alkaline KMnOto give

• Oxalic acid

• Ethyl alcohol

• Acetaldehyde

• Ethylene glycol

Exercise | Q 13.8 | Page 290

When ethanol is heated with conc. H2SO4 at 170oC, it gets converted into ethane. In this reaction conc. H2SO4 acts as

• Oxidizing agent

• Catalyst

• Dehydrating agent

• Reducing agent

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 291]

Exercise | Q 1.1 | Page 291

For each of the compounds : (a) ethane (b) vinegar (c) Marsh gas draw the relevant structural formula

Exercise | Q 1.2 | Page 291

What word is used to describe theses three compounds taken together?

Exercise | Q 2.1 | Page 291

What is the special feature of the structure of:

(a) C2H2

(b) C2H4

Exercise | Q 2.2 | Page 291

What type of reaction is common to both of these compounds?

Exercise | Q 3.1 | Page 291

Give the name and structural formula of:

A saturated Hydrocrbon

Exercise | Q 3.2 | Page 291

Give the name and strusctural formula of:

Ansaturated hydrocarbon with a double bond.

Exercise | Q 4 | Page 291

Copy and complete the following sentence:

A saturated hydrocarbon will undergo _______reactions, whereas the typical reaction of an unsaturated hydrocarbon is _______.

Exercise | Q 5.1 | Page 291

Write the equation for the laboratory preparation of Ethyne(acetylene) from calcium carbide.

Exercise | Q 5.2 | Page 291

What is the special feature of the structure of Ethyne?

Exercise | Q 5.3 | Page 291

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

Exercise | Q 5.4 | Page 291

Name the addition product formed between ethane and water.

Exercise | Q 6 | Page 291

State what do you observe ethene is bubbled through a solution of bromine in terachloromethane (carbon tetrachloride)

Exercise | Q 7 | Page 291

Fill in the blanks by chosing words from the given list of words:

Addition, Carbohydrates, CnH2n-2, CnH2n+2, electrochemical, homologus, hydrocarbons, saturated, substitution, unsaturated.

The alkanes form a ______series with general formula_________The alkanes are_______,which generally undergo________reactions.

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 292]

Exercise | Q 1.1 | Page 292

Ethanol can be converted to ethene which can be changed to ethane.

Choose the correct word or phrase from the options given below to complete the following sentences:

The conversion of ethanol to ehane is an example of_________(dehydration, dehydrogenation)

Exercise | Q 1.2 | Page 292

Ethanol can be converted to ethene which can be changed to ethane.

Choose the correct word or phrase from the options given below to complete the following sentences:

Converting ethanol to ethene requires the use of_________(Concentrated hydrochloric acid, concentrated nitric cid, concentrated sulphuric acid).

Exercise | Q 1.3 | Page 292

Ethanol can be converted to ethene which can be changed to ethane.

Choose the correct word or phrase from the options given below to complete the following sentences:

The conversion of ethene to ethane is an example of ________(Hydration, hydrogenation).

Exercise | Q 1.4 | Page 292

Ethanol can be converted to ethene which can be changed to ethane.

Choose the correct word or phrase from the options given below to complete the following sentences:

The catalyst used in the conversion of ethene to ethane is commonly________(iron, cobalt, nickle)

Exercise | Q 2 | Page 292
Write down the equation for the preparation of ethyne from calcium carbide?
Exercise | Q 3.1 | Page 292
Write down the equation for the preparation of ethyne from calcium carbide?
Exercise | Q 3.2 | Page 292

The reaction between ethene and chlorine forms only one product. Name the type of the reaction.

Exercise | Q 3.3 | Page 292

(a) Draw the structural formula of ethene.

(b) What is the feature of the ethene structure, which allows ethene to react with chlorine in the way it does?

Exercise | Q 4.1 | Page 292

The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:

Formed by the dehydration of ethanol by concentrated sulphuric acid.

Exercise | Q 4.2 | Page 292

The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:

Which forms methanoic acid on oxidation in the presence of copper at 200°C

Exercise | Q 4.3 | Page 292

The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:

Which has vapour density 14 and turns acidic potassium permanganate colourless?

Exercise | Q 4.4 | Page 292

The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:

Which forms chloroform on halogenations in the presence of sunlight?

Exercise | Q 4.5 | Page 292

The list of some organic compounds is given below:
Ethanol, ethane, methane, ethyne and ethene
From the above list, name a compound:

Which decolourises bromine solution in carbon tetrachloride?

Exercise | Q 5.1 | Page 292

Write balanced equations to show the preparation of the following:

Ethane from sodium propionate

Exercise | Q 5.2 | Page 292

Write balanced equations to show the preparation of the following:

Ethene from ethanol

Exercise | Q 5.3 | Page 292

Write balanced equations to show the preparation of the following:

Ethyne from Calcium carbide

Exercise | Q 5.4 | Page 292

Write balanced equations to show the preparation of the following:

Ethanoic acid from ethane

Exercise | Q 6.1 | Page 292

Which compound should be heated with soda lime to obtain ethane gas in the laboratory?

Exercise | Q 6.2 | Page 292

Write the equation for the reaction involved in the above question.

Exercise | Q 6.3 | Page 292

Write the balanced equation for the complete combustion of ethane.

Exercise | Q 6.4 | Page 292

Name a solid which can be used, instead of conc H2SO4 to prepare ethylene by dehydration of ethanol.

Exercise | Q 6.5 | Page 292

Name a reagant which can be used to distinguish between ethane and ethene.

Exercise | Q 6.6 | Page 292

Ethylene forms and addition product with chlorine. name this addition product and write its structural formula.

Exercise | Q 7 | Page 292

Write balanced euation for the following :
Ethane is burnt in air.

Exercise | Q 7.1 | Page 292

Write balanced euation for the following :

Write the equation for the preparation of ethylene from ethyl alcohol.

Exercise | Q 7.2 | Page 292

Write balanced euation for the following :

Write the general formula for a saturated hydrocarbon and give one example of a saturated hydrocarbon with its structural formula.

Exercise | Q 7.3 | Page 292

Write balanced euation for the following :

Name a compound which will give acetylene gas, when treated with water.

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 293]

Exercise | Q 1.1 | Page 293

Draw the structural formula of a compound with two carbon atoms in
each of the following cases:

An alcohol containing two carbon atoms.

Exercise | Q 1.1 | Page 293

Draw the structural formula of a compound with two carbon atoms in
each of the following cases:

An unsaturated hydrocarbon with carbon to carbon triple bond.

Exercise | Q 1.1 | Page 293

Draw the structural formula of a compound with two carbon atoms in
each of the following cases:

An alkane with a carbon to carbon single bond.

Exercise | Q 1.2 | Page 293

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol

From the compounds given above, name

The compound with -COOH as apart of its structure.

Exercise | Q 1.2 | Page 293

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol

From the compounds given above, name

The compound with -OH as apart of its structure.

Exercise | Q 1.2 | Page 293

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol

From the compounds given above, name

Homologue of homologous series with general formula CnH2n.

Exercise | Q 2.1 | Page 293

Write the equation of the following laboratory preparations:

Ethane from sodium propionate

Exercise | Q 2.2 | Page 293

Write the equation of the following laboratory preparations:

Ethene from iodoethane

Exercise | Q 2.3 | Page 293

Write the equation of the following laboratory preparations:

Ethyne from calcium carbide

Exercise | Q 3 | Page 293

Define the term catenation.

Exercise | Q 4.1 | Page 293

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

$\begin{array}{cc} \phantom{.....................}\ce{H}\phantom{...}\ce{H}\phantom{....}\ce{O}\phantom{...............}\\ \phantom{...........}| \phantom{....}|\phantom{.} \phantom{..}//\phantom{......}\\ \ce{H-C-C-C}\\ \phantom{.......}| \phantom{....}|\phantom{..}\phantom{..}\text{\\} \phantom{..}\\ \phantom{...............}\ce{H}\phantom{...}\ce{H}\phantom{}\phantom{...}\ce{H}\phantom{.........}\ \end{array}$

Exercise | Q 4.2 | Page 293

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

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

Exercise | Q 5.1 | Page 293

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

Exercise | Q 5.2 | Page 293

Draw the structural formula of ethyne.

Exercise | Q 5.3 | Page 293

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

Exercise | Q 6 | Page 293

Fill in blanks with correct words from the brackets:

Alkenes are the__________(Analogous/homologous) sries of _________(saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of_______(double/single) bonds. Alkenes mainly undergo________(addition/substitution) reactions.

Exercise | Q 7.1 | Page 293

Give the IUPAC names of the follwing compound. The IUPAC names of the compounds on the left are to guide you into giving the correct names of the compounds on the right.

 $\begin{array}{cc}\phantom{....}\ce{H}\phantom{..}\ce{H}\phantom{..}\ce{H}\\\phantom{.......}|\phantom{...}|\phantom{...}|\phantom{....}\\\ce{H-C-C=C}\\\phantom{.......}|\phantom{...}\phantom{...}|\phantom{....}\\\phantom{...}\ce{H}\phantom{....}\ce{}\phantom{..}\ce{H}\\\end{array}$ Propane $\begin{array}{cc}\phantom{...}\ce{H}\phantom{.......}\ce{}\phantom{..}\ce{}\\\phantom{.......}|\phantom{.......}\phantom{...}\phantom{....}\\\ce{H-C-C≡C-H}\\\phantom{.......}|\phantom{.......}\phantom{...}\phantom{....}\\\phantom{...}\ce{H}\phantom{.......}\ce{}\phantom{..}\ce{}\\\end{array}$ _____________
Exercise | Q 7.2 | Page 293

Give the IUPAC names of the follwing compound. The IUPAC names of the compounds on the left are to guide you into giving the correct names of the compounds on the right.

 $\begin{array}{cc}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{}\\\phantom{...}|\phantom{...}\phantom{}|\phantom{...}\phantom{.}|\phantom{...}\phantom{}|\phantom{...}\phantom{}|\phantom{...}\\\ce{H-C-C-C-C-C-H}\\\phantom{...}|\phantom{...}\phantom{}|\phantom{...}\phantom{.}|\phantom{...}\phantom{}|\phantom{...}\phantom{}|\phantom{...}\\\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{O}\phantom{..}\phantom{}\ce{H}\phantom{}\\\phantom{.......}\ce{H}\end{array}$ Pentan - 2 - ol $\begin{array}{cc}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{}\\\phantom{...}|\phantom{...}\phantom{}|\phantom{...}\phantom{.}|\phantom{...}\phantom{}|\phantom{...}\phantom{}|\phantom{...}\\\ce{H-C-C-C-C-C-H}\\\phantom{...}|\phantom{...}\phantom{}|\phantom{...}\phantom{.}|\phantom{...}\phantom{}|\phantom{...}\phantom{}|\phantom{...}\\\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{O}\phantom{..}\phantom{}\ce{H}\phantom{..}\phantom{}\ce{H}\phantom{}\\\phantom{}\ce{H}\end{array}$ _______________
Exercise | Q 7.3 | Page 293

Give the IUPAC names of the follwing compound. The IUPAC names of the compounds on the left are to guide you into giving the correct names of the compounds on the right.

 $\begin{array}{cc}\ce{H}\\|\\\ce{H-C-H}\\\phantom{.}\ce{H}\phantom{...} \phantom{}|\phantom{...} \phantom{}\ce{H}\phantom{.}\\\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\\ce{H-C-C-C-H}\\\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\\phantom{.}\ce{H}\phantom{...} \phantom{}|\phantom{...} \phantom{}\ce{H}\phantom{.}\\\ce{H-C-H}\\|\\\ce{H}\end{array}$ 2, 2 - Dimethyl Propane $\begin{array}{cc}\phantom{.}\ce{H}\phantom{...} \phantom{}\ce{H}\phantom{...} \phantom{}\ce{H}\phantom{.}\\\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\\ce{H-C-C-C-H}\\\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\\phantom{.}\ce{H}\phantom{...} \phantom{}|\phantom{...} \phantom{}\ce{H}\phantom{.}\\\ce{H-C-H}\\|\\\ce{H}\end{array}$   _____________________
Exercise | Q 7.4 | Page 293

Give the IUPAC names of the follwing compound. The IUPAC names of the compounds on the left are to guide you into giving the correct names of the compounds on the right.

 $\begin{array}{cc}\phantom{....}\ce{H}\phantom{..}\ce{H}\phantom{..}\ce{H}\\\phantom{....}|\phantom{...} \phantom{.}|\phantom{...}||\\\ce{H-C-C-C}\\\phantom{....}|\phantom{...} \phantom{.}|\phantom{...}|\\\phantom{......}\ce{H}\phantom{..}\ce{H}\phantom{..}\phantom{}\ce{OH}\phantom{}\\\end{array}$ Propanoic acid $\begin{array}{cc}\phantom{.....}\ce{H}\phantom{...}\ce{O}\phantom{..}\\\phantom{....}|\phantom{..} \phantom{..}\phantom{}||\\\ce{H-C-C}\\\phantom{....}|\phantom{...} \phantom{.}\phantom{}|\\\phantom{.......}\ce{H}\phantom{...}\ce{OH}\phantom{..}\\\end{array}$ _____________________
Exercise | Q 7.5 | Page 293

Give the IUPAC names of the follwing compound. The IUPAC names of the compounds on the left are to guide you into giving the correct names of the compounds on the right.

 $\begin{array}{cc}\phantom{........}\ce{H}\phantom{...}\ce{H}\phantom{........}\\\phantom{....}|\phantom{...} \phantom{.}|\phantom{....}\\\ce{H-C-C-H}\\\phantom{....}|\phantom{...} \phantom{.}|\phantom{....}\\\phantom{........}\ce{Br}\phantom{...}\ce{Br}\phantom{........}\\\end{array}$ 1,2-dibromoethane $\begin{array}{cc}\phantom{........}\ce{H}\phantom{...}\ce{H}\phantom{........}\\\phantom{....}|\phantom{...} \phantom{.}|\phantom{....}\\\ce{H-C-C-H}\\\phantom{....}|\phantom{...} \phantom{.}|\phantom{....}\\\phantom{........}\ce{Cl}\phantom{...}\ce{Cl}\phantom{........}\\\end{array}$ __________________

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 294]

Exercise | Q 1 | Page 294

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 | Q 2 | Page 294

The formation of 1,2 -dibromoethane from ethene and bromine is an example of

• Substitution

• Dehydration

• Dehydrohalogenation

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 295]

Exercise | Q 1.1 | Page 295

Name the organic compound prepared by each of the following reactions:

$\ce{C2H5COONa + NaOH ->}$

Exercise | Q 1.2 | Page 295

Name the organic compound prepared by each of the following reactions:

$\ce{CH3I + 2H- ->}$

Exercise | Q 1.3 | Page 295

Name the organic compound prepared by each of the following reactions:

$\ce{C2H5Br + KOH (alcoholic solution) ->}$

Exercise | Q 1.4 | Page 295

Name the organic compound prepared by each of the following reactions:

$\ce{CaC2 + 2H2O ->}$

Exercise | Q 2.1 | Page 295

Write the equation for the following reaction:

Bromoethane and an aqueous solution of hydroxide

Exercise | Q 2.2 | Page 295

Write the equation for the following reaction:

Calcium carbide and water

Exercise | Q 2.3 | Page 295

Write the equation for the following reaction:

Ethene and water(steam)

Exercise | Q 3.1 | Page 295

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

Exercise | Q 3.2 | Page 295

Addition reactions and substitution reactions are types of organic reactions.Which type of reaction is shown by?

Ethene?

Exercise | Q 3.2 | Page 295

Addition reactions and substitution reactions are types of organic reactions.Which type of reaction is shown by?

Ethane

Exercise | Q 3.3 | Page 295

Write the equation for the complete combustion of ethane.

Exercise | Q 3.3 | Page 295

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 | Q 3.4 | Page 295

What type of compound is formed by the reaction between acetic acid and an alcohol?

Exercise | Q 3.4 | Page 295

Why is pure acetic acid also known as glacial acetic acid?

Exercise | Q 4.1 | Page 295

Which of the following statements is wrong about alkanes?

• They are all saturated hydrocarbon

• They can undergo addition as well as Substitution reaction.

• Thry are almost non-polar in nature

• On complete combustion give out carbon dioxide and water.

Exercise | Q 4.2 | Page 295

Select the acid which contains four hydrozen atoms in it.

• Formic acid

• Sulphuric acid

• Nitric acid

• Acitic acid

Exercise | Q 5 | Page 295

Write a fully balanced equation for the folowing case:

Acitic acid is warmed with ethanol in the presence of concentrated sulpheric acid.

Exercise | Q 6 | Page 295

Methane is the first member of alkane, when it is treated with excess of chlorine in the presence of diffused forms carbon tetrachloride. Draw the appropriate structural formula of carbon tetrachloride and state the type of bond present is it.

Exercise | Q 7.1 | Page 295

Give chemical equation for:

The laboratory preparation of methane from sodium acetate.

Exercise | Q 7.2 | Page 295

Give chemical equation for:

The reaction of one mole of ethene with one mole chlorine gas.

Exercise | Q 7.3 | Page 295

Give chemical equation for:

The preparation of ethyne from 1,2 - dibromoethane.

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 296]

Exercise | Q 1.1 | Page 296

State how the following conversions can be carried out:

Ethyl chloride to Ethyl alcohol

Exercise | Q 1.2 | Page 296

State how the following conversions can be carried out:

Ethyl chloride to Ethene.

Exercise | Q 1.3 | Page 296

State how the following conversions can be carried out:

Ethene to Ethyl alcohol

Exercise | Q 1.4 | Page 296

State how the following conversions can be carried out:

Ethyl alcohol to Ethane

Exercise | Q 2.1 | Page 296

Define isomerism

Exercise | Q 2.2 | Page 296

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

Exercise | Q 3.1 | Page 296

Select the correct answer from the choices a, b, c and d which are given.

An organic compound undergoes addition reactions and gives a red colour precipitate with ammonial cuprous chloride. Therefore, the organic compound could be:

• Ethane

• Ethene

• Ethyne

• Ethanol

Exercise | Q 3.2 | Page 296

Select the correct answer from the choices a, b, c and d which are given.

The organic compound mixed with ethanol to make it spurious is :

• Methanol

• Methanoic acid

• Methanal

• Ethanoic acid

Exercise | Q 4.1 | Page 296

Draw the structural formula for the following:

Ethanoic acid

Exercise | Q 4.2 | Page 296

Draw the structural formula for the following:

But-2-yne

Exercise | Q 5.1 | Page 296

Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH2Br - CH2Br.
$\ce{A ->[Br2/Od4] CH2Br - CH2Br}$

Draw the structural formula of A.

Exercise | Q 5.2 | Page 296

Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH2Br - CH2Br.
$\ce{A ->[Br2/Od4] CH2Br - CH2Br}$

What type of reaction has A undergone?

Exercise | Q 5.3 | Page 296

Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH2Br - CH2Br.
$\ce{A ->[Br2/Od4] CH2Br - CH2Br}$

Exercise | Q 5.4 | Page 296

Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH2Br - CH2Br.
$\ce{A ->[Br2/Od4] CH2Br - CH2Br}$

Name (not formula) the compound formed when steam reacts with A in the presence of phosphoric acid.

Exercise | Q 5.5 | Page 296

Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH2Br - CH2Br.
$\ce{A ->[Br2/Od4] CH2Br - CH2Br}$

What the procedure for converting the product of (b) (IV) back to A?

Exercise | Q 6.1 | Page 296

Give reason as to why :

Almost 90% of all known compounds are organic in nature

Exercise | Q 6.2 | Page 296

Give reason as to why :

It is dangerous to burn methane in an insufficient supply of air.

Exercise | Q 7.1 | Page 296

Choose the correct answer from the options given below :

The number of C-H bonds in ethane molecule are :

• Four

•  Six

• Eight

• Ten

Exercise | Q 7.2 | Page 296

Choose the correct answer from the options given below :

The functional group present in acetic acid is :

• Ketonic (C = 0)

• Hydroxyl (- OH)

• Aldehydic (- CHO)

•  Carboxyl (-COOH)

Exercise | Q 7.3 | Page 296

Choose the correct answer from the options given below :

The unsaturated hydrocarbons undergo:

• A substitution reaction

• An oxidation reaction

•  None of the above

Exercise | Q 8.1 | Page 296

Choose the correct word/phrase from the options given below to complete the following sentences :

The catalyst used for conversion of ethane to ethane is commonly ________

• nickel

• iron

• cobalt

Exercise | Q 8.2 | Page 296

Choose the correct word/phrase from the options given below to complete the following sentences :

When acetaldehyde us oxidized with acidified potassium dichromate, it forms _________

• ester

• ethanol

• acetic acid

Exercise | Q 8.3 | Page 296

Choose the correct word/phrase from the options given below to complete the following sentences :

Ethanoic acid reacts with ethanol in presence of concentrated H2SO4 so as to form a compound and water. The chemical reaction which takes place is called ______

• dehydration

• hydrogenation

• esterification

Exercise | Q 8.4 | Page 296

Write the equation for the reaction taking place between 1, 2-dibromoethane and alcoholic potassium hydroxide.

Exercise | Q 8.5 | Page 296

Choose the correct word/phrase from the options given below to complete the following sentences :

The product formed when ethane gas reacts with water in the presence of sulphuric acid is __________

• ethanal

• ethanol

• ethanoic acid

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 297]

Exercise | Q 1.1 | Page 297

Write balanced chemical equation for the following :

Monochloroethane is hydrolysed with aqueous KOH

Exercise | Q 1.2 | Page 297

Write balanced chemical equation for the following :

A mixture of sodalime and sodium acetate is heated

Exercise | Q 1.3 | Page 297

Write balanced chemical equation for the following :

Ethanol under high pressure and low temperature is treated with acidified potassium dichoromate

Exercise | Q 1.4 | Page 297

Write balanced chemical equation for the following :

Water is added to calcium carbide

Exercise | Q 1.5 | Page 297

Write balanced chemical equation for the following :

Ethanol reacts with sodium at room temperature

Exercise | Q 2.1 | Page 297

Give the structural formulae for the following :

An isomer of n-butane

Exercise | Q 2.2 | Page 297

Give the structural formulae for the following :

2-propanol

Exercise | Q 2.3 | Page 297

Give the structural formula for the following :

Diethyl ether

Exercise | Q 3.1 | Page 297

Give reason for the following :

Methane does not undergo addition reaction, but ethane does

Exercise | Q 3.2 | Page 297

Give reason for the following :

Ethyne is more reactive than ethane

Exercise | Q 3.3 | Page 297

Give reason for the following :

Hydrocarbons are excellent fuels

Exercise | Q 4.1 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

A saturated hydrocarbon from iodomethene

Exercise | Q 4.2 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

An unsaturated hydrocarbon from an alcohol

Exercise | Q 4.3 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

An unsaturated hydrocarbon from calcium carbide

Exercise | Q 4.4 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

An alcohol from ethyl bromide

Exercise | Q 5 | Page 297

Identify this statement that is incorrect about alkanes.

•  They are hydrocarbons

• There is a single covalent bond between carbon and hydrogen

• They can undergo both substitution as well as addition reactions

• On complete combustion they produce carbon dioxide and water

Exercise | Q 6.1 | Page 297

Identify the gas evolved when sodium propionate is heated with sodalime

Exercise | Q 6.2 | Page 297

Give a chemical term for a reaction in which hydrogen of a alkane is replaced by a halogen

Exercise | Q 7 | Page 297

Give a chemical test to distinguish between ethane gas and ethane gas.

Exercise | Q 8.1 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

A saturated hydrocarbon from iodomethene

Exercise | Q 8.2 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

An unsaturated hydrocarbon from an alcohol

Exercise | Q 8.3 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

An unsaturated hydrocarbon from calcium carbide

Exercise | Q 8.4 | Page 297

Give balanced equation for the laboratory preparations of the following organic compound:

An alcohol from ethyl bromide

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 298]

Exercise | Q 1.1 | Page 298

Give the structural formula of the following:

Ethanol

Exercise | Q 1.2 | Page 298

Give the structural formula of the following:

1-propanal

Exercise | Q 1.3 | Page 298

Give the structural formula of the following:

Ethanoic acid

Exercise | Q 1.4 | Page 298

Give the structural formula of the following:

1,2,dichlormethene

Exercise | Q 2 | Page 298

The IUPAC name of acetylene is

• Propane

•  Propyne

• Ethane

•  ethyne

Exercise | Q 3.1 | Page 298

Write the IUPAC names for the following :

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

Exercise | Q 3.2 | Page 298

Write the IUPAC names for the following :

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

Exercise | Q 3.3 | Page 298

Write the IUPAC names for the following :

$\begin{array}{cc} \phantom{........}\ce{H}\phantom{...}\ce{H}\phantom{........}\\ \phantom{...}|\phantom{...} \phantom{.}|\phantom{....}\\ \ce{H - C - C = O}\\ \phantom{...}|\phantom{...}\phantom{.}\phantom{....}\\ \phantom{......}\ce{H}\phantom{...}\ce{}\phantom{........}\\ \end{array}$

Exercise | Q 4.1 | Page 298

Using their structural formulae identify the functional group by circling them :

Dimethyl ether

Exercise | Q 4.2 | Page 298

Using their structural formulae identify the functional group by circling them :

Propanone

Exercise | Q 5 | Page 298

Identify the statement which does not describe the property of alkenes:

• They are unsaturated hydrocarbons

•  They decolourise bromine water

•  They can undergo addition as well as substitution reactions

• They undergo combustion with oxygen forming carbon dioxide and water.

Exercise | Q 6 | Page 298

State the observation

When the gaseous product obtained by dehydration of ethyl alcohol is passed through bromine water.

Exercise | Q 7.1 | Page 298

Name the following :

Process by which ethane is obtained from ethane

Exercise | Q 7.2 | Page 298

Name the following :

A hydrocarbon which contributes towards the greenhouse effect

Exercise | Q 7.3 | Page 298

Name the following :

Distinctive reaction that takes place when ethanol is treated with acetic acid

Exercise | Q 7.4 | Page 298

Name the following :

The property of elements by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.

Exercise | Q 8.1 | Page 298

Give balanced chemical equations for the following conversion :

Ethanoic acid to ethyl ethanote

Exercise | Q 8.2 | Page 298

Give balanced chemical equations for the following conversion :

Calcium carbide to ethyne

Exercise | Q 8.3 | Page 298

Give balanced chemical equations for the following conversion :

Sodium ethanoate to methane

#### Frank solutions for Class 10 Chemistry Chapter 12 Exercise [Page 299]

Exercise | Q 1.1 | Page 299

Give the structural formulae of the following :

2-methyl propane

Exercise | Q 1.2 | Page 299

Give the structural formulae of the following :

Ethanoic acid

Exercise | Q 1.3 | Page 299

Give the structural formulae of the following :

Butna-2ol

Exercise | Q 2.1 | Page 299

Equation for that reaction when compound A is bubbled through bromine dissolved in carbon trtrachloride is as follows :
DIAGRAM

Draw the structure of A.

Exercise | Q 2.2 | Page 299

Equation for that reaction when compound A is bubbled through bromine dissolved in carbon trtrachloride is as follows :
DIAGRAM

State your observation during this reaction

Exercise | Q 3.1 | Page 299

Write a balanced chemical equation for the following:

Burning of ethane in plentiful supply for air.

Exercise | Q 3.2 | Page 299

Write a balanced chemical equation for the following:

Action of water on calcium carbide

Exercise | Q 3.3 | Page 299

Write a balanced chemical equation for the following:

Heating of ethanol at 170oC in the presence of conc. Sulphuric acid

Exercise | Q 4 | Page 299

Choose the correct answer from the options given below :

If the molecular formula of an organic compouns is C10H18 it is

•  Alkene

• Alkane

• Alkyne

•  Not a hydrocarbon

Exercise | Q 5 | Page 299

Fill in the blank.

The compound formed when ethane reacts with hydrogen is _________ (CH4,C2H6,C3H6).

Exercise | Q 6 | Page 299

Identify the underlined substance.

An organic compound containing -COOH functional group.

Exercise | Q 7 | Page 299

State are relevant observations for following reactant:

Addition of ethyl alcohol to acetic acid in presence of conc. H2SO4

Exercise | Q 8.1 | Page 299

Draw the structural formula for the following :

2, 3-dimethyl butane

Exercise | Q 8.2 | Page 299

Draw the structural formula for the following :

Diethyl ether

Exercise | Q 8.3 | Page 299

Draw the structural formula for the following :

propanoic acid

Exercise | Q 9.1 | Page 299

Identify the term or substance based on the descriptions given below:

Ice like crystals formed on cooling an organic acid sufficiently.

Exercise | Q 9.2 | Page 299

Identify the term or substance based on the descriptions given below:

Hydrocarbon containing a triple bond used for welding purposes

Exercise | Q 9.3 | Page 299

Identify the term or substance based on the descriptions given below:

The property by virtue of which the compound has the same molecular formula but different structural formulae.

Exercise | Q 9.4 | Page 299

Identify the term or substance based on the descriptions given below:

The compound formed where two alkyl are linked by group

$\begin{array}{cc} \ce{O}\\ \ce{-||-}\\ \ce{C} \end{array}$

Exercise | Q 10.1 | Page 299

Give a balanced chemical equation for the following :

Preparation of ethane from sodium propionate

Exercise | Q 10.2 | Page 299

Give a balanced chemical equation for the following :

Action of alcoholic KOH on bromoethane

Exercise

## Frank solutions for Class 10 Chemistry chapter 12 - Carboxylic Acid

Frank solutions for Class 10 Chemistry chapter 12 (Carboxylic Acid) 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 Frank Class 10 Chemistry Part 2 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 10 Chemistry chapter 12 Carboxylic Acid 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.

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