Class XII Chemistry Aldehydes, Ketones and Carboxylic Acids Quiz 3

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Question 1

Benzene carbaldehyde is reacted with concentrated NaOH solution to give the products A and B. The product A can be used food preservative and the product B is an aromatic hydroxyl compound where OH group is linked to sp³ hybridised carbon atom next to Benzene ring. The products A and B are respectively,

• ASodium benzoate and phenol
• BSodium benzoate and phenyl methanol
• CSodium benzoate and cresol
• DSodium benzoate and picric acid

Question 2

Cyanohydrin of which compound on hydrolysis will give lactic acid

• AC₆H₅CHO
• BHCHO
• CCH₃CHO
• DCH₃ - CH₂ - CHO

Question 3

Grignard reagents do not give carbonyl compounds with:

• ACO₂
• BRCOCl
• CRCN
• DRCOOR

Question 4

Which will give silver mirror test with Tollen’s reagent:

• AC₆H₅CHO
• BCH₃ - CHO
• CHCOOH
• DAll of these

Question 5

In the following reactions

X and Y are

• A
• B
• C
• D

Question 6

Upon reaction with followed by protonation, the compound that produces ethanol is

• A
• B
• CHCHO
• D

Question 7

In a Cannizzaro reaction, the intermediate that will be least hydride donor is

• A
• B
• C
• D

Question 8

Which one of the following is a Grignard reagent?

• ACH₃OMgl
• BC₆H₅MgBr
• CC₂H₅OMgBr
• D(C₂H₅)₄pb

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