Question

Consider the following sequence of conversion.
$\underset{(X)}{\underbrace{2NO+O_2}}\rightleftharpoons \underset{\text{(Y)}}{2N{O}_2}\underset{\text{heat}}{\overset{\text{Cool}}{\rightleftharpoons }}\underset{\text{(Z)}}{N_2{O}_4}$
$X$, $Y$ and $Z$ can be described as

	$X$	$Y$	$Z$
(a)	Colourless	Brown, paramagnetic	Colourless, diamagnetic
(b)	Brown	Colourless, diamagnetic	Brown, paramagnetic
(c)	Colourless	Colourless, paramagnetic	Brown, diamagnetic
(d)	Brown	Brown, paramagnetic	Brown, diamagnetic

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (A)

$\underset{\text{Colourless gases}}{\underbrace{2NO+O_2}}\rightleftharpoons \underset{\text{Brown, paramagnetic gas due to presence of an odd electron}}{2N{O}_2}\underset{\text{Heat}}{\overset{\text{Cool}}{\rightleftharpoons }}\underset{\text{Colourless, diamagnetic solid}}{N_2{O}_4}$