Aldehydes, Ketones and Carboxylic Acids  MCQs

MCQs of Aldehydes, Ketones and Carboxylic Acids

Showing 31 to 40 out of 162 Questions
1 2 3 4 5 6
31.
What is the functional group isomer of butanal ?
(a) Butyric acid
(b) Methyl ethyl ketone
(c) 2 pentan - 2 - one
(d) Diethyl ether
Answer:

Option (b)

32.
The general formula for aldehyde is CnH2n+1CHO. What is the value of 'n' for 2-methyl propanal ?
(a) 2
(b) 4
(c) 1
(d) 3
Answer:

Option (d)

33.
Which compound is not a derivative of carboxylic acid ?
(a) Amide
(b) Aldehyde
(c) Anhydride
(d) Acid chloride
Answer:

Option (b)

34.
In the carbonyl group of aldehyde and ketone, what is the nature of double bond between C and O and type of hybridization of carbon ?
(a) Both σ - bonds, sp3 - hybridization
(b) Both π - bonds, sp - hybridization
(c) One σ - bond, and one π - bond, sp2 - hybridization
(d) One σ - bond, and one π - bond, sp3 - hybridization
Answer:

Option (c)

35.
By _____, ketone can be prepared in one step.
(a) Hydrolysis of ester
(b) Oxidation of primary alcohol
(c) Oxidation of secondary alcohol
(d) Reaction of alcohol with alkyl halide
Answer:

Option (c)

36.
What is the formula of Acrolein ?
(a) CH2 = CH - CHO
(b) CH2 = CH - COOH
(c) CH2 = CH - CN
(d) CH2 = CH - CONH2
Answer:

Option (a)

37.
In propanone there are _____ .
(a) nine σ - bonds and one π - bond
(b) nine π - bonds and one σ - bond
(c) eight σ - bonds and two π - bonds
(d) eight π - bonds and two σ - bonds
Answer:

Option (a)

38.
Oxidation numbers of the carbonyl carbon in formaldehyde, acetaldehyde and acetone are respectively _____ .
(a) +1, +2, +3
(b) +1, 0, +2
(c) 0, +1, +2
(d) +2, 0, +1
Answer:

Option (c)

39.
What is the oxidation number of carbon in formaldehyde ?
(a) 0
(b) +1
(c) +2
(d) -1
Answer:

Option (a)

40.
What is the oxidation number of carbonyl carbon in acetophenone ?
(a) +1
(b) Zero
(c) +3
(d) +2
Answer:

Option (d)

Showing 31 to 40 out of 162 Questions
1 2 3 4 5 6