Assertion Reasoning questions (MCQ)

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Chapter 4 Class 10 - Carbon and its Compounds

Question 3 - Assertion Reasoning questions (MCQ) - Chapter 4 Class 10 - Carbon and its Compounds

Last updated at Dec. 13, 2024 by

Assertion (A): Esterification is a process in which a sweet smelling substance is produced.

Reason (R): When esters react with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained.

 

Answer

Esterification is a reaction in which alcohol reacts with carboxylic acid to produce ester , which is a sweet smelling compound .

Reaction of Carboxylic acid with Alcohol - Teachoo.png

                              

When an ester reacts with NaOH (sodium hydroxide) which is a base, the following reaction takes place and an alcohol and a sodium salt of carboxylic acid is obtained. It is the reverse of the esterification reaction.

Reaction of An ester with A base - Teachoo.png

       

Thus,

  • Assertion is true.
  • Reasoning is true.
  • But Reasoning does not give a correct explanation of Assertion.

Therefore, the correct option is (b) both assertion and reason are correct but the reason is not a correct explanation for the assertion.

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Transcript

Assertion (A): Esterification is a process in which a sweet smelling substance is produced. Reason (R): When esters react with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained. Answer Reaction of Carboxylic acid with Alcohol Carboxylic acid Alcohol Ester Water When an ester reacts with NaOH (sodium hydroxide) which is a base, the following reaction takes place and an alcohol and a sodium salt of carboxylic acid is obtained. It is the reverse of the esterification reaction. Reaction of An ester with A base An ester A base A Carboxylate salt An alcohol Thus, Assertion is true. Reasoning is true. But Reasoning does not give a correct explanation of Assertion. Therefore, the correct option is (b) both assertion and reason are correct but the reason is not a correct explanation for the assertion. Answer Esterification is a reaction in which alcohol reacts with carboxylic acid to produce ester, which is a sweet smelling compound.

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo