Hydroxylation of propyne in the presence of is initiated by the attack of:
1. carbene
2. free radical
3. electrophile
4. nucleophile
Ozonolysis of buta-1,3-diene gives:
1. HCHO and glyoxal
2. and glyoxal
3. and glyoxal
4. HCHO + glyoxal +
Which is the most suitable reagent among the following to distinguish compound (III) from rest of the compounds?
I.
II.
III.
IV.
1. | Br2/CCl4 | 2. | Br2/CH3COOH |
3. | Alk.KMnO4 | 4. | Ammoniacal AgNO3 |
The reaction,
+ + HCl
is an example of:
1. Friedel-Crafts reaction
2. Kolbe's synthesis
3. Wurtz's reaction
4. Grignard synthesis
2-Methylpropene and But-1-ene can be distinguished by:
1. Baeyer's reagent
2. Ammoniacal
3. solution
4. ,
Nitration of benzene is:
1. nucleophilic substitution
2. electrophilic substitution
3. electrophilic addition
4. nucleophilic addition
Which of the following compounds has the lowest boiling point?
1.
2.
3.
4.
Acetylene on reacting with hypochlorous acid gives:
1.
2.
3.
4.
Benzene reacts with in the presence of anhy. to form
1. toluene
2. chlorobenzene
3. benzylchloride
4. xylene