Which of the following compounds can be best prepared by Wurtz-reaction ?

(1) Iso-butane

(2) n-butane

(3) n-pentane

(4) Iso-pentane

1. 3             
2. 4             
3. 1            
4. 2 

Product (P) in the above-mentioned reaction is:-  

1.		2.
3.		4.	Both (2) & (3)

Ethane is subjected to combustion process. During the combustion the hybrid state of carbon changes from:-

(1) sp² to sp³

(2) sp³ to sp

(3) sp to sp³

(4) sp² to sp²

The above reaction is an example of:-

1. isomerization

2. polymerization

3. cracking

4. de-hydrogenation

Consider the following compounds:

(I)  

(II)

(III) 
Arrange the compounds I, II, and III in decreasing order of their heats of combustion:
1. II>I>III
2. I>II>III
3. III>II>I
4. III>I>II

Which substrate is appropriate for the preparation of methane and ethane in a single-step process?

1.  H₂C = CH₂

2. CH₃OH

3. CH₃-Br

4. CH₃-CH₂-OH

 $\stackrel{{\mathrm{Br}}_2/\mathrm{hv}}{\to }$ Monobromo derivatives

The number of possible monobromo products is (excluding stereoisomers):

1.  4     
2.  5 
3.  8
4.  10