What is the major product (A) in the following reaction?

1.		2.
3.		4.

$\underset{\mathrm{EtOH},∆}{\overset{\mathrm{KOH}}{\to }}\underset{\left(major\right)}{\left(A\right)}$

Product (A) is:

1.

2.

3.

4.

The major product of the following reaction is-

1. 

2. 

3. 

4. 

1-2-dichloro ethane + NaSCH₂CH₂SNa $\to$ P (C₄H₈S₂) 

Unknown product (p) of the above reaction is:

1. 

2. 

3. $\mathrm{H}-\mathrm{S}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-\mathrm{S}-\mathrm{H}$

4. $\mathrm{H}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{S}-\mathrm{H}$

Which of the following alkyl halides has the maximum density?

Grignard reagent shows addition on:

1. >C=O                             2. -C$\equiv$N

3. >C=S                              4. all of these

Sodium ethoxide reacts with ethyl iodide to yield:

1. CH₃CH₃                               2. C₂H₅OCH₃

3. C₂H₅OC₂H₅                          4. none of these

The set of reagents used to produce freon (CCl₂F₂) are:

What causes an alkyl iodide to darken on standing?

1. Hydrolysis                         

2. Conversion into ether

3. Liberation of iodine             

4. Formation of alkanes