The oxidation of benzene by V2O5 in the presence of air produces:
1. | Benzoic anhydride | 2. | Maleic anhydride |
3. | Benzoic acid | 4. | Benzaldehyde |
A compound among the following that does not undergo Friedel-Craft's reaction easily is-
1. Cumene
2. Xylene
3. Nitrobenzene
4. Toluene
Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO3 and conc.
H2SO4. In the mixture, nitric acid acts as a/an-
1. Reducing agent
2. Acid
3. Base
4. Catalyst
The compound X in the above reaction is-
1. | 2. | ||
3. | 4. |
The deactivating but ortho-para directing benzene ring substituent among the following is-
1. -N=O
2. -OCH3
3. -COCH3
4. -NO2
The major product obtained in the given reaction is:
1. | 2. | ||
3. | 4. |
The product B in the above-mentioned reaction is:
1. | ![]() |
2. | ![]() |
3. | ![]() |
4. | ![]() |
The compounds among the following that can be generated by Friedel craft acylation is/are -
I. | |
II. | |
III. | |
IV. |
1. | II, III and IV | 2. | I, III and IV |
3. | I and II | 4. | II and III |
Cyclopentadiene is much more acidic than cyclopentane, beacuse -
1. Cyclopentadiene has conjugated double bonds.
2. Cyclopentadiene has both sp2 and sp3 hybridized carbon atoms.
3. Cyclopentadiene is a strain-free cyclic system.
4. Cyclopentadienyl anion ion, the conjugate base of cyclopentadiene, is an aromatic species and hence has higher stability.
The product (B) in the above-mentioned reaction is:
1. | ![]() |
2. | ![]() |
3. | ![]() |
4. | ![]() |