The IUPAC name for \(\mathrm{CH}_3 \mathrm{COCH}_2 \mathrm{COCH}_3\) is:
1. Pentane-2,4-dione
2. Pentane-1,4-dione
3. Pentane-2,2-dione
4. Pentane-3,4-dione

The structure of Hex-2-en-4-ynoic acid is:

1.
2.
3.
4.	None of these

The major product formed when cyclohexanecarbaldehyde reacts with PhMgBr and H₃O⁺ is:

1.		2.
3.		4.	None of these

What is the major product of the reaction between cyclohexanecarbaldehyde and Tollens' reagent?

1.		2.
3.		4.	None of these

For the following substrates, the characteristic aldol condensation occurs with?

i) Methanal (ii) 2-Methylpentanal (iii) Benzaldehyde

(iv) Benzophenone (v) Cyclohexanone (vi) 1-Phenylpropanone

(vii) Phenylacetaldehyde (viii) Butan-1-ol (ix) 2,2-Dimethylbutanal

1. (ii), (v), (vi), (vii)

2.  (iii) & (iv)

3. all of the above

4. none of these

The compounds that undergoes the Cannizzaro reaction are: 

(i) Methanal

(ii) 2-Methylpentanal

(iii) Benzaldehyde

(iv) Benzophenone

1. (i)

2. (ii)

3. (i), (iii) 

4. (i), (ii), (iii) 

Propanal and butanal can produce four different aldol condensation products. The possible structures are:

1.
2.
3.	Both (1) and (2)
4.	None of these

1. Low electrophilicity in 2,2,6-trimethylcyclohexanone

2. Less steric crowd in  2,2,6-trimethylcyclohexanone

3. More steric crowd in  2,2,6-trimethylcyclohexanone

4. High electrophilicity in 2,2,6-trimethylcyclohexanone

There is only one –NH₂ group involved in semicarbazone formation out of two –NH₂ group. It is due to:

1. Resonance  of one type of –NH₂ group

2. Inductive effect of one type of –NH₂ group

3. Hyperconjugation of one type of –NH₂ group

4. Reverse hyperconjugation of one type of -NH₂ group