Predict the correct intermediate and product in the following reaction.

H₃C-C$\equiv$CH $\underset{{\mathrm{HgSO}}_4}{\overset{{\mathrm{H}}_2\mathrm{O},}{\to }}$ ${\mathrm{H}}_2{\mathrm{SO}}_4$ Intermediate $\to$Product

                                                    (A)                   (B)

An alkene reacts in accordance with Markownikoff's rule to give a product of 1-chloro-l-methylcyclohexane with HCl. The possible alkene is: 

1.
2.
3.	Both 1 and 2
4.

2, 3-dimethyl-2-butene can be prepared by heating which of the following compounds

with a strong acid?

1. 

2. (CH₃)₃C-CH=CH₂

3. (CH₃)₂C=CH-CH₂-CH₃

4. (CH₃)₂CH-CH₂-CH=CH₂

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

The products that formed when the following compound is treated with Br₂ in the presence of FeBr₃ are:

1.
2.
3.
4.

Identity Z in the sequence of reactions,
                          HBr/H₂O₂ 
CH₃CH₂CH=CH₂    →        Y    +   C₂H₅O^-Na⁺→   Z
 
1. CH₃-(CH₂)₃-O-CH₂CH₃

2. (CH₃)₂CH₂-O-CH₂CH₃

3. CH₃(CH₂)₄-O-CH₃

4. CH₃CH₂-CH(CH₃)-O-CH₂CH₃                  

Which of the following organic compounds has same hybridisation as its combustion product -(CO₂)?

1. Ethane

2. Ethyne

3. Ethene

4. Ethanol

A compound among the following that does not undergo Friedel-Craft's reaction easily is:

1. Cumene               

2.  Xylene

3. Nitrobenzene         

4. Toluene

In the following reaction, What will be the major product?

1. 

2.  

3. 

4. 

In the following reactions:-

the major products (A) and (C) are respectively