Explore topic-wise MCQs in VITEEE.

This section includes 51 Mcqs, each offering curated multiple-choice questions to sharpen your VITEEE knowledge and support exam preparation. Choose a topic below to get started.

1.

Ketones are comparatively less reactive than aldehdye. It is due to

A. alkyl groups are electron donating
B. steric hindrance
C. both (a) and (b)
D. none
Answer» D. none
2.

Which of the following reagents will react with both aldehydes and ketones?

A. Grignard reagent
B. Tollens reagent
C. Fehlings reagent
D. Benedicts reagent
Answer» B. Tollens reagent
3.

Cannizzaros reaction is not given by

A. formaldehyde
B. acetaldehyde
C. benzaldehyde
D. trimethyl acetaldehyde
Answer» C. benzaldehyde
4.

Which of the following reactions may be assoclated with aldehyde and ketone?

A. nucleophile addition
B. polymerization
C. oxidation
D. all of the above
Answer» E.
5.

Which of the following compounds will react with Tollens reagent?

A. CH3-CHO
B. CH3-CH-CH3
C. CH3-COOH
D. CH3-CO-CH2-CH3
Answer» B. CH3-CH-CH3
6.

Acetone reacts with HCN to form a cyanohydrin. It is an example of

A. electronphilic addition
B. electrophilic substitution
C. nucleophilic addition
D. nucleophilic substitution
Answer» D. nucleophilic substitution
7.

Which of the following aldehydes shows rapid reaction with sodium nitroprusside?

A. formaldehyde
B. accetaldehyde
C. benzaldehyde
D. acetone
Answer» E.
8.

Formalin is _______ % solution of formaldehyde in water

A. 10%
B. 20%
C. 40%
D. 60%
Answer» D. 60%
9.

Which of the following substances does not give iodoform test?

A. acetaldehyde
B. ethyl alcohol
C. methyl alcohol
D. acetone
Answer» D. acetone
10.

The carbon atom of carbonyl group is

A. sp hybridized
B. sp2 hybridized
C. cp3 hybridized
D. dsp2 hybridized
Answer» C. cp3 hybridized
11.

Which of the following reaction is not shown by ketones?

A. reaction with HCN
B. reaction with NaHSO3
C. reaction with 2 4 dinitrophenyl hydrazine
D. reaction with Fehling solution
Answer» E.
12.

Which of the following will have the highest boiling point?

A. methanal
B. ethanal
C. propanal
D. hexanone
Answer» E.
13.

Which of the following substance produce acetaldehyde on dry distillation?

A. (CH3COO)2Ca
B. (HCOO)2Ca
C. both (a) and (b)
D. none
Answer» D. none
14.

The product formed in Aldol condensation is [CBSE AIPMT 2007]

A. a beta-hydroxy aldehyde or a beta-hydroxy ketone
B. an alpha-hydroxy aldehyde or ketone
C. an alpha, beta unsaturated ester
D. a beta-hydroxy acid
Answer» B. an alpha-hydroxy aldehyde or ketone
15.

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc.HCl is called [CBSE AIPMT 2007]

A. Cope reduction
B. Dow reduction
C. Wolff-Kishner reduction
D. Clemmensen reduction
Answer» E.
16.

A strong base can abstract an a-hydrogen from [CBSE AIPMT 2008]

A. Amine
B. Alkane
C. Alkene
D. Ketone
Answer» E.
17.

In which of the following reactions new carbon-carbon bond is not formed [WB JEE 2009]

A. Cannizzaro reaction
B. Wurth reaction
C. Aldol condensation
D. Friedel-Crafts reaction
Answer» B. Wurth reaction
18.

For making distinction between 2-pentanone and 3-pentanone the reagent to be employed is [WB JEE 2009]

A. K2Cr2O7/H2SO4
B. Zn-Hg/HCl
C. SeO2
D. Iodine/NaOH
Answer» E.
19.

The compound which forms acetaldehyde when heated with dilute NaOH is [Karnataka CET 2009]

A. 1 chloro ethane
B. 1, 1 dichloro ethane
C. 1, 2 dichloro ethane
D. 1, 1, 1 trichloro ethane
Answer» C. 1, 2 dichloro ethane
20.

Compound 'A' undergoes formation of cyanohydrins which on hydrolysis gives lactic acid (CH3CHOHCOOH). Therefore, compound 'A' is [DELHI PMT 2010]

A. formaldehyde
B. acetaldehyde
C. acetone
D. benzaldehyde
Answer» C. acetone
21.

Which of the following statements is not correct? [DELHI PMT 2010]

A. Aldehydes and ketones undergo nucleophilic addition
B. Aldehydes and ketones undergo electrophilic substitution
C. Aldehydes and ketones contain polar carbonyl group
D. Lower members of aldehydes and ketones are soluble in water due to hydrogen bonding
Answer» C. Aldehydes and ketones contain polar carbonyl group
22.

Clemmensen reduction of a ketone is carried out in the presence of which of the following? [CBSE AIPMT 2011]

A. H2 and Pt as catalyst
B. Glycol with KOH
C. Zn-Hg with HCl
D. LiAlH4
Answer» D. LiAlH4
23.

Presence of carbonyl group (C=O) will reflect precipitate of color

A. red
B. orange
C. brown
D. white
Answer» C. brown
24.

Solution which contain copper(II) ions (Cu+2) is

A. alkaline
B. Fehling solution
C. acidic solution
D. both A and B
Answer» E.
25.

An aqueous solution of silver nitrate in excess ammonia called

A. ammoniacal silver nitrate solution
B. Tollens reagent
C. Fehlings solution
D. both A and B
Answer» E.
26.

 In order to identify precipitates which are obtained can be matched with respecting

A. melting point data
B. electronegativity
C. polarity
D. masses
Answer» B. electronegativity
27.

Primary alcohol is gently heated to produce aldehyde in presence of solution of acidified

A. hydroxide
B. dichromate
C. ethanol
D. all of them
Answer» C. ethanol
28.

 HCN undergoes Nucleophilic addition reaction to give product of

A. hydrogen cyanide
B. hydroxynitrile
C. hydroxyl amine
D. all of them
Answer» C. hydroxyl amine
29.

Secondary alcohol forms ketone and water by reacting with

A. oxygen atom
B. oxygen molecule
C. ozone molecule
D. oxygen ion
Answer» B. oxygen molecule
30.

 Carbonyl compounds are

A. aldehydes
B. ketones
C. both A and B
D. alcohols
Answer» D. alcohols
31.

In redox reaction, Ag+ ions are theirself

A. oxidized
B. reduced
C. stable
D. stable
Answer» C. stable
32.

Reducing agent used for reduction of aldehydes and ketone is

A. tetrafluorate
B. tetrahydridoborate
C. tetrafluroborate
D. tetrachloride
Answer» C. tetrafluroborate
33.

Almond essence in cakes and pudding is made from

A. ester
B. alcohol
C. benzaldehyde
D. ketone
Answer» D. ketone
34.

 Solution which is used to detect presence of aldehyde or ketone is

A. 2,4-dinitrophenylhydrazine
B. BNPH
C. both A and B
D. tollens reagent
Answer» D. tollens reagent
35.

Carbonyl compounds when oxidized easily to form carboxylic group involves

A. aldehydes
B. ketones
C. haloalkanes
D. esters
Answer» B. ketones
36.

Carbonyl compounds have an odor similar to

A. almonds
B. grapes
C. fruits
D. blue cheese
Answer» B. grapes
37.

Ketones are formed by oxidation of

A. primary alcohols
B. secondary alcohol
C. tertiary alcohol
D. amines
Answer» C. tertiary alcohol
38.

Hydrogen Cyanide

A. is highly toxic
B. is colorless
C. have smell of almonds
D. all of them
Answer» E.
39.

 Hydrogen react following addition reactions with

A. aldehydes
B. ketones
C. haloalkanes
D. both A and B
Answer» E.
40.

Silver ions Ag+ act as

A. reducing agent
B. oxidizing agent
C. catalyst
D. both A and B
Answer» C. catalyst
41.

 In carbonyl group Oxygen atom has high electronegativity which make it

A. stable
B. non-polar
C. polarized
D. unstable
Answer» D. unstable
42.

 Ketones react with reducing agent to make

A. primary alcohols
B. secondary alcohol
C. tertiary alcohol
D. all of them
Answer» C. tertiary alcohol
43.

Reduction reactions of carbonyl compounds is known to be

A. Nucleophilic addition
B. Nucleophilic substitution
C. addition reaction
D. elimination reaction
Answer» B. Nucleophilic substitution
44.

CH3CH2CH2CH2CHO is formula for

A. methanol
B. propanal
C. butanal
D. pentanal
Answer» E.
45.

If ketones are not oxidized, then upon heating Fehling's solution remains

A. white
B. blue
C. unchanged
D. both B and C
Answer» E.
46.

Chemical reaction between carbonyl compounds and DNPH is example of

A. condensation reaction
B. substitution reaction
C. addition reaction
D. elimination reaction
Answer» B. substitution reaction
47.

Oxidation of primary alcohols give

A. aldehydes
B. ketones
C. both A and B
D. alcohols
Answer» B. ketones
48.

During a reaction, formation of mirror inside tube is due to

A. silver ions
B. silver atoms
C. silver compounds
D. silver nitrate
Answer» C. silver compounds
49.

Carbonyl group in aldehyde is

A. C=O
B. C-O
C. CO
D. CHO
Answer» B. C-O
50.

Further addition of ethanol will lead to different product as

A. ethanoic acid
B. ketones
C. benzaldehyde
D. all of them
Answer» B. ketones