Give one method for industrial preparation and one for laboratory preparation

Caron dioxide

In the laboratory, CO2 can be prepared by the action of dilute hydrochloric acid on calcium carbonate. The reaction involved is as follows:

$\mathrm{CaCO}_{3}+2 \mathrm{HCl}_{(a q)} \longrightarrow \mathrm{CaCl}_{2(a q)}+\mathrm{CO}_{2(g)}+\mathrm{H}_{2} \mathrm{O}_{(r)}$

$\mathrm{CO}_{2}$ is commercially prepared by heating limestone. The reaction involved is as follows:

$\mathrm{CaCO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2} \uparrow$

Caron monoxide

In the laboratory, $\mathrm{CO}$ is prepared by the dehydration of formic acid with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$, at $373 \mathrm{~K}$. The reaction involved is as follows:

$\mathrm{HCOOH} \frac{373 \mathrm{~K}}{\text { conc. } \mathrm{H}_{2} \mathrm{SO}_{4}} \mathrm{H}_{2} \mathrm{O}+\mathrm{CO} \uparrow$

CO is commercially prepared by passing steam over hot coke. The reaction involved is as follows:

$\mathrm{C}_{(s)}+\mathrm{H}_{2} \mathrm{O}_{(g)} \stackrel{473-1273 \mathrm{~K}}{\longrightarrow} \underbrace{\mathrm{CO}_{(g)}+\mathrm{H}_{2(g)}}_{\text {watr gas }}$