1. The carbon atom of a carbonyl group is

a. sp hybridized
b. sp2 hybridized
c. sp3 hybridized
d. none

2. Formalin is

a. 10% solution of formaldehyde in water
b. 20% solution of formaldehyde in water
c. 30% solution of formaldehyde in water
d. 40% solution of formaldehyde in water

3. Which of following will have highest boiling point

a. methanal
b. ethanal
c. propanal
d. 2-hexanone

4. Ketones are prepared by the oxidation of

a. primary alcohol
b. secondary alcohol
c. teritery alcohol
d. all of these

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

a. electrophilic addition
b. electrophilic substitution
c. nucleophilic addition
d. nucleophilic substitution

6. Which of following will not give iodoform test on treatment with I2/NaOH

a. Acetaldehyde
b. Acetone
c. Butanone
d. 3-Pentanone

7. Which of following will react with Tollen’s reagent

a. CH3CHO
b. CH3COCH3
c. CH3COOH
d. CH3COCH2CH3

8. Cannizaro’s reaction is not given by

a. acetone
b. acetaldehyde
c. butanone
d. 3-pentanone

9. Which of following reagents will react with both aldehydes and ketones

a. Grignard reagent
b. Tollens reagent
c. Fehling’s reagent
d. Benedict’s reagent