Nitrogen

Q. Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?
(IIT-JEE, 2012)

1. $HN{O}_3,NO,N_2,N{H}_{4}Cl$
2. $HN{O}_3,N{H}_{4}Cl,NO,N_2$
3. $NO,HN{O}_3,N{H}_{4}Cl,N_2$
4. $HN{O}_3,NO,N{H}_{4}Cl,N_2$

Q.

Nitrogen exists in its elemental form as

1. Mono atomic gas
2. Diatomic gas
3. Triatomic gas
4. None of these

Q. Substance used in Holmes signal is:

1. ${PH}_3$
2. ${PH}_5$
3. $P_2{O}_5$
4. ${NH}_3$

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

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

Q. Nitrogen is relatively inactive element because

1. It has low atomic radius
2. Its electronegativity is fairly high
3. Dissociation energy of its molecule is fairly high.
4. Its atom has a stable electronic configuration

Q.

At high temperatures, nitrogen directly combines with:

1. Zn

2. Mg

3. Al

4. Fe

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 is obtained by the thermal decomposition of:

1. Ammonium nitrate

2. Ammonium nitrite

3. Silver (I) nitrate

4. Lead (II) nitrate

Q. Which of the following trihalides is not hydrolysed by water?

1. $N{F}_3$
2. $PC{l}_3$
3. $NC{l}_3$
4. $AsC{l}_3$

Q. Extra pure $N_2$ can be obtained by heating:

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