Nitrogen

Q. Which of the following compounds give $N_2$ on heating ?

1. $N{H}_{4}N{O}_2$
2. $N{H}_{4}N{O}_3$
3. $Na{N}_3$
4. Both (A) and (C)

Q. The compound(s) which generate(s) $N_2$ gas upon thermal decomposition below ${300}^{o}C$ is (are):

1. $N{H}_{4}N{O}_3$
2. $(N{H}_4{)}_{2}C{r}_2{O}_7$
3. $Ba(N_3{)}_2$
4. $M{g}_3{N}_2$

Q.

How oxygen can be prepared from

1. Catalytic decomposition
2. From potassium chlorate
3. From water

Q. Atmosphere contains 78% $N_2$ gas, which the chance of a massive fire in the atmosphere during lightning.

1. increases
2. decreases
3. does not affect

Q. Number of electrons shared in the formation of nitrogen molecule is:

1. 6
2. 10
3. 2
4. 8

Q. In Duma's method for estimation of nitrogen , 0.25 g of an organic compound gave 40 mL of nitogen collected at 300 K temperature and 725 mm pressure . If the aqueous tension at 300 K is 25 mm , the percentage of nitrogen in the compound is :

1. 17.36
2. 15.76
3. 16.76
4. 18.20

Q.

Which of the following will yield $N_2$ when heated?

1. $Na{N}_3$

2. $N{H}_{4}N{O}_2$

3. $N{H}_{4}N{O}_3$

4. $(N{H}_4{)}_{2}C{r}_2{O}_7$

Q.

Nitrogen exists in its elemental form as

1. Mono atomic gas

2. Diatomic gas

3. Triatomic gas

4. None of these

Q. Pure Nitrogen can be obtained by passing ammonia vapours over heated copper (II) oxide $\left(CuO\right)$ – True or False?

1. True
2. False

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

1. 3
2. 2
3. 5

Q. Pure Nitrogen can be obtained by passing ammonia vapours over heated copper (II) oxide $\left(CuO\right)$ – True or False?

1. True
2. False

Q. Which of the following is not a use of liquid nitrogen?

Q. In $\left(N_2\right)$ gas, the $\pi -bond$ is weaker than $\sigma -bond$.

1. True
2. False

Q. Nitrogen differs from rest of the members of group 15 due to: