Ethane is used in the preparation of ethene.

Write a balanced chemical equation for the following:

• Producing ethane from bromo-ethane using $\mathrm{Zn}/\mathrm{Cu}$ couple in alcohol.

Arrange the following according to the instruction given in bracket:

Ethane, methane, ethene, ethyne. (In the increasing order of the molecular weight) [$\mathrm{H}=1, \mathrm{C}=12$]

State one relevant reason for the following:

• Soda-lime is preferred to sodium hydroxide in the laboratory preparation of methane.

Draw the structural formula for the following:

• $2, 2$dimethyl pentane

Draw the structural formula for the following:

• Iso propane

Write a balanced chemical equation for the following:

• Complete combustion of ethane.

There are two ways for the preparation of $2,2-$diethylbutane 

By Corey-House synthesis.

Path $\mathrm{I}$:

Path $\mathrm{II}$:

Which one of the following statements is correct?

What is the product $\mathrm{X}$ in the following reaction?

${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{Br}\frac{\left(1\right) \mathrm{Mg},\text{ ether }}{\left(2\right) {\mathrm{H}}_3{\mathrm{O}}^{+}}\mathrm{X}$?

Complete the following equation:

${\mathrm{CH}}_4\left(\mathrm{g}\right)+4{\mathrm{Cl}}_2\left(\mathrm{g}\right)\to \mathrm{\_\_\_\_\_}\left(\mathrm{l}\right)+4\mathrm{HCl}\left(\mathrm{g}\right)$

$\mathrm{A}: {\mathrm{CCl}}_4$     $\mathrm{B}: {\mathrm{CH}}_3\mathrm{Cl}$     $\mathrm{C}: {\mathrm{CH}}_2{\mathrm{Cl}}_2$

Enter your correct answer as $\mathrm{A}$, $\mathrm{B}$, or $\mathrm{C}$.

Paraffin wax is used for making _____ (candles/pencils)