Identify the reactants and products of equation:

$\mathrm{Vegetable} \mathrm{oil}{ }_{\left(\mathrm{l}\right)} + {{\mathrm{H}}_2}_{ \left(\mathrm{g}\right)} \underset{\mathrm{Ni} \mathrm{catalyst}}{\overset{{60}^0\mathrm{C}}{\to }}\mathrm{Vanaspathi} \mathrm{ghee}{ }_{\left(\mathrm{s}\right)}.$

Write down the steps in balancing the equation:

${{\mathrm{N}}_2}_{\left(\mathrm{g}\right)} + {{\mathrm{H}}_2}_{\left(\mathrm{g}\right)} \to {{\mathrm{NH}}_3}_{\left(\mathrm{g}\right) }$

Write down a balanced chemical equation for the following reaction:

$\mathrm{Calcium} \mathrm{chloride} + \mathrm{Sulfuric} \mathrm{acid} \to \mathrm{Calcium} \mathrm{sulphate} + \mathrm{hydrogen} \mathrm{chloride}$

Write down the physical states of reactants and products in following reaction:

${\mathrm{SO}}_2 + 2{\mathrm{H}}_2 \mathrm{S}\to 3\mathrm{S} + 2{\mathrm{H}}_2\mathrm{O}$

Write down the physical states of reactants and products in following reaction:

$2\mathrm{Ag} + 2\mathrm{HCl} \to 2\mathrm{AgCl} + {\mathrm{H}}_2$

Complete the following reaction and give names of the products.

${\mathrm{CuSO}}_4{ }_{\left(\mathrm{aq}\right)} + {\mathrm{Fe}}_{ \left(\mathrm{s}\right) } \to \mathrm{\_\_\_\_\_} +\hspace{0.17em}\mathrm{\_\_\_\_\_}$.

Complete the following reaction and give names of the products.

${{\mathrm{CuSO}}_4}_{ \left(\mathrm{aq}\right) }+ {\mathrm{Pb}}_{\left(\mathrm{s}\right) } \to \mathrm{\_\_\_\_\_}\hspace{0.17em}+\hspace{0.17em}\mathrm{\_\_\_\_\_}$.