The reaction, 

${\mathrm{C}}_6{\mathrm{H}}_6$ + ${\mathrm{CH}}_3\mathrm{Cl}\underset{{\mathrm{AlCl}}_3}{\overset{\mathrm{Anhydrous}}{\to }}$${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_3$ + HCl

is an example of:

1. Friedel-Crafts reaction

2. Kolbe's synthesis

3. Wurtz's reaction

4. Grignard synthesis

The products formed after ozonolysis of Pent-2-ene are:

Which of the following hydrocarbons contains an acidic hydrogen atom?

1. Ethyne

2. Ethene

3. Benzene

4. Ethane

Which of the following alkenes will yield only ketones when treated with ozone?

1.		2.
3.		4.

Which among the following compounds is the most acidic?

1. ${\mathrm{CH}}_3-{\mathrm{CH}}_3$

2. ${\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{CH}$

3. ${\mathrm{CH}}_2={\mathrm{CH}}_2$

4. ${\mathrm{CH}}_3\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3$

Decreasing order of acidic behavior of benzene, n-hexane, and ethyne is:

1. Hexane > Ethyne > Benzene

2. Benzene > Hexane > Ethyne

3. Ethyne > Benzene > Hexane

4. Benzene > Ethyne > Hexene