Question

Match Column-I with Column-II and select the correct answer.
$\begin{array}{cc}Column-I& Column-II\\ A.S{O}_2& P.Laughinggas\\ B.N_{2}O& Q.Carbonicacid\\ C.O_2& R.Acidrain\\ D.H_{2}O+C{O}_2& S.Combustion\end{array}$

• A. A-R, B-P, C-S, D-Q
• B. A-P, B-R, C-S, D-Q
• C. A-S, B-P, C-R, D-Q
• D. A-Q, B-P, C-R, D-S

Answer 1

The correct option is A A-R, B-P, C-S, D-Q

$A\to R,B\to P,C\to S,D\to Q$
Acid rain is caused by emissions of Sulphur dioxide and Nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. Nitrous oxide or $N_{2}O$ is also called as laughing gas. At room temperature, it is a colourless non-flammable gas, with a slightly metallic scent and taste. Carbonic acid is represented by $H_{2}C{O}_3$. It forms when Carbon dioxide dissolves in water. It is a weak acid and forms two types of salts - carbonates and bicarbonates. Oxygen helps in combustion.