Question

$\begin{array}{cccc}& \text{Column - 1}& & \text{Column - II}\\ \text{(a)}& N_{2}O& \text{(p)}& \text{Brown coloured gas}\\ \text{(b)}& N{O}_2& \text{(q)}& \text{Blue coloured liquid at 243K}\\ \text{(c)}& N_2{O}_3& \text{(r)}& \text{White crystalline solid}\\ \text{(d)}& N_2{O}_5& \text{(s)}& \text{Colourless gas, produces hysterical laughter when inhaled}\end{array}$

• A. A – r; B – s; C – p; D – q
• B. A – q; B – r; C – s; D – p
• C. A – p; B – q; C – r; D – s
• D. A – s; B – p; C – q; D – r

Answer 1

The correct option is D

A – s; B – p; C – q; D – r

Nitrous oxide - a chemical compound with the formula $N_{2}O$ - is an oxide of nitrogen, which is commonly known as laughing gas or nitrous. At room temperature, it is a colorless non-flammable gas, with a slight metallic scent and taste. It is soluble in water. But at higher temperatures, nitrous oxide is a powerful oxidizer. Nitrous oxide has significant medical uses, especially in surgery and dentistry, for its anaesthetic and pain reducing effects.

Nitrogen dioxide is the chemical compound with the formula $N{O}_2$. It is a precursor to the industrial synthesis nitric acid. At higher temperatures, it is a reddish-brown gas with a sharp, biting odor and is a prominent air pollutant. Nitrogen dioxide is a paramagnetic, bent molecule.

Dinitrogen trioxide is the chemical compound with the formula $N_2{O}_3$. This deep blue solid forms upon mixing equal parts of nitric oxide and nitrogen dioxide and cooling the mixture below −21 °C. At 243K, it is a blue-colored liquid.

$N_2{O}_5$ is a white crystalline solid that melts at 41 °C. It exists as an ionic solid made of $N{O}_2^{+}N{O}_3^{-}$

Hence:

A – s; B – p; C – q; D – r