Oxides of Nitrogen

Q. The nitrogen oxide that does not contain a N - N bond is:

1. $N_2{O}_3$
2. $N_2{O}_4$
3. $N_2{O}_5$
4. $N_{2}O$

Q. A commercial system removes $S{O}_2$ emission from smoke at ${95}^{\circ }C$ by the following set of reactions:
$S{O}_2+C{l}_2\to S{O}_{2}C{l}_2\text{(Yield = 75 \%)}$
$S{O}_{2}C{l}_2+2H_{2}O\to H_{2}S{O}_4+2HCl\text{(Yield = 80 \%)}$
$H_{2}S{O}_4+Ca(OH{)}_2\to CaS{O}_4+2H_{2}O\text{(Yield = 100 \%)}$
How many grams of $CaS{O}_4$ may be produced from 3.78 g of $S{O}_2$?

1. 4.82 g
2. 6.94 g
3. 2.26 g
4. 8.34 g

Q.

In polar stratospheric clouds, chlorine nitrate on hydrolysis yields:

1. Hypochlorous acid and nitric acid

2. Hydrogen chloride and nitrogen

3. Nitric acid and chlorine

4. None of the above

Q. In which of the following, the $O-N-O$ bond angle is highest :

1. $N_2{O}_4$
2. $N{O}_2^{+}$
3. $N{O}_2^{-}$
4. $N{O}_3^{-}$

Q.

Choose the most appropriate answer from the following list of oxides that fit the description.

$({\mathrm{SiO}}_2,{\mathrm{SO}}_2,{\mathrm{Al}}_2{\mathrm{O}}_3,\mathrm{MgO},\mathrm{CO},{\mathrm{Na}}_2\mathrm{O})$

A covalent oxide of a metalloid.

Q. Assertion: Oxidation state of hydrogen is +1 in $H_{2}O$ while -1 in $Ca{H}_2$.
Reason: $Ca{H}_2$ is a metal hydride and for hydrides, hydrogen is assigned the oxidation number of -1.

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> AIIMS 2018

Q. The total number of lone pairs of electrons in $N_2{O}_3$ is. ___

Q. Nitrous oxide is also known as laughing gas.

1. True
2. False

Q. Even though air contains $78\%$ nitrogen, $20\%$ oxygen by volume and formation of $NO$ is thermodynamically feasible, they do not combine to form $NO$. This is because

1. Both $O_2$ and $N_2$ are diatomic gases

2. The partial pressure of oxygen in the atmosphere is very low

3. The formation of $NO$ requires high temperature

4. At atmospheric pressure $NO$ formed spontaneously decompose to the elements

Q. $nitrogentrioxide\stackrel{hydrolysis}{\to }P$
Oxidation state of nitrogen in P is .

1. 3
2. 2
3. 5

Q. In which of the following, the $O-N-O$ bond angle is highest :

1. $N_2{O}_4$
2. $N{O}_2^{+}$
3. $N{O}_2^{-}$
4. $N{O}_3^{-}$

Q.

In polar stratospheric clouds, chlorine nitrate on hydrolysis yields:

1. Hypochlorous acid and nitric acid

2. Hydrogen chloride and nitrogen

3. Nitric acid and chlorine

4. None of the above