undergoes Wurtz reaction to give-
1. | Propane + Ethane | 2. | Propane |
3. | Propane + Ethane + Butane | 4. | Propane + Butane |
Which compound is expected to decolorize a cold, basic KMnO4 solution?
1. CH3– CH3
2. CH3CH2CH
3.
4.
A compound among the following that does not undergo Friedel-Craft's reaction easily is-
1. Cumene
2. Xylene
3. Nitrobenzene
4. Toluene
The correct order of acidity among the following is:
1. | \(\mathrm{CH \equiv CH > CH_3 - C \equiv CH }\) \(\mathrm{ > CH_2 = CH_2 > CH_3 - CH_3}\) |
2. | \(\mathrm{CH \equiv CH > CH_2 = CH_2 }\) \(\mathrm{ > CH_3 - C \equiv CH > CH_3 - CH_3}\) |
3. | \(\mathrm{CH_3 - CH_3 > CH_2 = CH_2 }\) \(\mathrm{ > CH_3 - C \equiv CH > CH \equiv CH }\) |
4. | \(\mathrm{ CH_2 = CH_2 > CH_3 - CH_3 }\) \(\mathrm{ > CH_3 - C \equiv CH > CH \equiv CH}\) |
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is:
1. | The eclipsed conformation of ethane is more stable than staggered conformation because eclipsed conformation has no torsional strain. |
2. | The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has a torsional strain. |
3. | The staggered conformation of ethane is more stable than eclipsed conformation because staggered conformation has no torsional strain. |
4. | The staggered conformation of ethane is less stable than eclipsed conformation because staggered conformation has a torsional strain. |
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.
A compound among the following that gives the maximum % of meta product on nitration
(using HNO3/H2SO4) is :
1. Toluene
2. Aniline
3. Benzene
4. Isopropyl benzene