Integer Answer Type Questions for JEE: Aldehydes, Ketones & Carboxylic Acids

Q.1. 10 moles of  are treated with 8 moles of CH₃MgBr followed by hydrolysis. How many moles of diol will be obtained?

Ans. 0
Because of acidic hydrogen of -CH₂- group 8 moles of CH₄ will be obtained.

Q.2.

Identify number of reagent that can be used for above conversion.
(a) Zn - Hg / HCl
(b) LiAlH₄ 
(c) CHCl₃ / KOH
(d)
(e)
(f) SeO₂   

Ans. 3
Clemmensen reduction (Zn - Hg / HCl) , Wolff Kishner reduction  and Raney Nickel Desulphurization (Ni / H₂ with  reduces the carbonyl group to -CH₂- on reaction with

Q.3. Consider the following reaction

How many times Michael addition reaction can take place.

Ans. 2

Q.4.  In the following structure, H at C-x is involved in crossed aldol reaction.

Ans. 2
C-2 is involved in cross aldol reaction. It's the case of intramolecular aldol condensation reaction.

Q.5. CH₃CHO  +  CH₃COCH₃   products
Total number of possible aldol products are:

Ans. 4

Q.6. Number of carbon atom in compound D is

Ans. 3

Q.7. How many carbon-carbon double bonds are present in the end product 'Z'

Ans. 1

Q.8. What would be the value of ∧CH₃ COOH in Scm² eq^-1 in a solution of pH = 2, if ∧_∞ for CH₃COOH is 400 Scm² eq^-1.

Ans. 4

Q.9. Number of organic compounds out of the following which can show positive iodoform test is acetaldehyde, Methanal, Butanone, Acetone, Glyoxal, pentan-2one.

Ans. 4
Compound containing  undergo iodoform

Q.10. Consider the following sequence of reaction:

What is the sum of stereoisomer of (X) and (Y).

Ans. 4

(X) → Two enantiomers
(Y) → Two geometric isomers.