Hydrocarbons

In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule to give a product 1-chloro-1-methylcyclohexane. The possible alkene is

1. [figure] (A)
2. [figure] (B)
3. (A) and (B)
4. [figure]

2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

1. (CH3)3CCH=CH2
2. (CH3)2C=CHCH2CH3
3. (CH3)2CHCH2CH=CH2
4. (CH3)2CH- CH3 |CH-CH=CH2

The oxidation of benzene by V2O5 in the presence of air produces

1. maleic anhydride
2. benzoic acid
3. benzaldehyde
4. benzoic anhydride.

A single compound of the structure, [figure] is obtainable from ozonolysis of which of the following cyclic compounds?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

The reaction of C6H5CH=CHCH3 with HBr produces

1. C6H5CH2CH2CH2Br
2. [figure]
3. C6H5 Br |CHCH2CH3
4. C6H5CH2 Br |CHCH3

What products are formed when the following compound is treated with Br2 in the presence of FeBr3? [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ?

1. -COOH
2. -NO2
3. -C N
4. -SO3H

Which of the following compounds will not undergo Friedel-Crafts reaction easily?

1. Nitrobenzene
2. Toluene
3. Cumene
4. Xylene

Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80-100 C forms which one of the following products?

1. 1, 4-Dinitrobenzene
2. 1, 2, 4 - Trinitrobenzene
3. 1, 2-Dinitrobenzene
4. 1, 3-Dinitrobenzene

Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?

1. NaNH2
2. HCl
3. O2
4. Br2