The group that activates the benzene ring towards electrophilic substitution reaction is:

The alkoxy group in aryl alkyl ethers activates the benzene ring towards:

1. Nucleophilic addition reaction

2. Electrophilic addition reaction

3. Nucleophilic substitution reaction

4. Electrophilic substitution reaction

An appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is/are : 
 

1.
2.
3.
4.

In Kolbe’s reaction, 

the product formed will be:

1.  Para-salicylic aldehyde

2.  Ortho-salicylic aldehyde

3. Para-salicylic acid

4. Ortho-salicylic acid

In Reimer-Tiemann reaction, 

the product will be:

1. ortho-Salicylaldehyde

2. para-Salicylaldehyde

3. meta-Salicylaldehyde

4. All of the above

In Williamson ether synthesis, the major product would be:

1. 1-Methoxypropane

2. 2-Methoxypropane

3. 3-Methoxypropane

4. All of the above

Unsymmetrical ether will be the product in:

1. Kolbe’s reaction.

2. Reimer-Tiemann reaction.

3. Williamson ether synthesis.

4. None of the above.