Match the reactions given in column A with their types in column B. Column A Column B (a) CH 4 + Cl 2 → CH 3 Cl + HCl (i) Esterification (b) C 2 H 5 OH + 2 O → CH 3 COOH + H 2 O (ii) Decarboxylation (c) CH 3 COOH + C 2 H 5 OH → CH 3 COOC 2 H 5 + H 2 O (iii) Saponification (d) CH 3 COONa + 4 NaOH → CH 4 + Na 2 CO 3 (iv) Substitution (e) CH 3 COOC 2 H 5 + NaOH → C 2 H 5 OH + CH 3 COONa (v) Oxidation

(a) The given reaction, CH 4 ( g ) Methane + Cl 2 ( g ) Chlorine → CH 3 Cl ( g ) Methyl chloride + HCl ( g ) Hydrochloric acid is a substitution reaction. In this reaction hydrogen of hydrocarbon compounds is replaced/substituted by chlorine in the presence of sunlight. (b) The given reaction C 2 H 5 OH ( l ) Ethanol + 2 O ( g ) Nascent oxygen → CH 3 COOH ( l ) Ethanoic acid + H 2 O ( aq ) water is an oxidation reaction. That is the oxidation of an alcohol to acid. Generally, in this reaction alcohols are converted to carboxylic acids in presence of strong oxidising agents such as alkaline KMnO 4 or acidified K 2 Cr 2 O 7 . (c) The given reaction, CH 3 COOH ( l ) Ethanoic acid + C 2 H 5 OH ( l ) Ethanol → conc . H 2 SO 4 CH 3 COOC 2 H 5 ( l ) Ethyl acetate + H 2 O aq water is an esterification reaction in which an ester is produced by the reaction of an alcohol with carboxylic acid compounds in the presence of acid as catalyst. (d) The given reaction, CH 3 COONa ( aq ) Sodium acetate + 4 NaOH ( aq ) Sodium hydroxide → CH 4 ( g ) Methane + Na 2 CO 3 ( aq ) Sodium carbona is a decarboxylation reaction where sodium acetate is decarboxylated to form methane. Carbon dioxide is removed in the form of sodium carbonate. (e) The given reaction, CH 3 COOC 2 H 5 ( l ) Ethyl acetate + NaOH ( aq ) Sodium hydroxide → C 2 H 5 OH ( l ) Ethanol + CH 3 COONa ( aq ) Sodium acetate is a saponification reaction. It is the conversion of fat or oil into soap and an alcohol Column A Column B (a) CH 4 + Cl 2 → CH 3 Cl + HCl (iv) Substitution (b) C 2 H 5 OH + 2 O → CH 3 COOH + H 2 O (v) Oxidation (c) CH 3 COOH + C 2 H 5 OH → CH 3 COOC 2 H 5 + H 2 O (i) Esterification (d) CH 3 COONa + 4 NaOH → CH 4 + Na 2 CO 3 (ii) Decarboxylation (e) CH 3 COOC 2 H 5 + NaOH → C 2 H 5 OH + CH 3 COONa (iii) Saponification

E M B I B E

Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 6

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10th CBSE

IMPORTANT

Earn 100

What is baking soda? How is it prepared from sodium chloride? How does it differ from baking powder?

Important Questions on Question Bank

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10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 7

Give the principles involved in the manufacture of caustic soda by Chlor-alkali process. Write chemical equations for the reactions that occur during the process. What are the by-products of this process?

EASY

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IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 8

Name the chemical substance used in hospitals for setting fractured bones.

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Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 8

How will you prepare slaked lime?

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Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 9

A pellet of a basic substance absorbs moisture from the air and gives a soapy touch. The substance is also produced during chlor-alkali process.
(i) Identify the substance.
(ii) What happens when the substance is treated with

{CO}_{2}

?
(iii) Write the balanced chemical equation for the reaction of the substance with

{CO}_{2}

.

HARD

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q I

Match the reactions given in column A with their types in column B.

Column A	Column B
(a) ${CH}_{4} + {Cl}_{2} \to {CH}_{3} Cl + HCl$	(i) Esterification
(b) $C_{2} H_{5} OH + 2 [O] \to {CH}_{3} COOH + H_{2} O$	(ii) Decarboxylation
(c) ${CH}_{3} COOH + C_{2} H_{5} OH \to {CH}_{3} {COOC}_{2} H_{5} + H_{2} O$	(iii) Saponification
(d) ${CH}_{3} COONa + 4 NaOH \to {CH}_{4} + {Na}_{2} {CO}_{3}$	(iv) Substitution
(e) ${CH}_{3} {COOC}_{2} H_{5} + NaOH \to C_{2} H_{5} OH + {CH}_{3} COONa$	(v) Oxidation