JEE 2020: Aldehydes, Ketones and Carboxylic Acids

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Question 1

What is metaformaldehyde?

• ADimmer of HCHO
• BTrimer of formaldehyde
• CTetramer of formaldehyde
• DNone of these

Question 2

Acetaldehyde can be converted into the given compound by which reagent?

• AKOH
• BKOH followed by LAH
• Cexcess of HCHO and KOH
• DKCN followed by SBH

Question 3

Q is:

• A
• B
• C
• D

Question 4

Which one of the following is an acyl group:

• AR-O-
• B
• C
• D

Question 5

The given reaction is:

• AClaissen reaction
• BTischenko reaction
• CPerkin reaction
• DCannizaro reaction

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