The number of P-H bond(s) in ${\mathrm{H}}_3{\mathrm{PO}}_2$, ${\mathrm{H}}_3{\mathrm{PO}}_3$, and ${\mathrm{H}}_3{\mathrm{PO}}_4$, respectively, is

1.  2, 0, 1

2.  1, 1, 1

3.  2, 0, 0

4.  2, 1, 0

The complete hydrolysis of \(\mathrm{XeF}_6\)${}_{}$ results in the formation of:
 

Phosphorous reacts with chlorine gas to give a colorless liquid. which fumes in moist air to produce HCl and

1.  ${\mathrm{POCl}}_3$

2.  ${\mathrm{H}}_3{\mathrm{PO}}_3$

3.  ${\mathrm{PH}}_3$

4.  ${\mathrm{H}}_3{\mathrm{PO}}_4$

Ammonia is NOT produced in the reaction of

1.  ${\mathrm{NH}}_4\mathrm{Cl}$ with KOH

2.  AIN with water

3.  ${\mathrm{NH}}_4\mathrm{Cl}$ with ${\mathrm{NaNO}}_2$

4.  ${\mathrm{NH}}_4\mathrm{Cl}$ with $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

NO₂ is the anhydride of

1. HNO₃

2. HNO₂

3. HNO₃ + HNO₂

4. None of the above

Which is not hydrolysed with water?

1. ${\mathrm{PCl}}_3$

2. ${\mathrm{NF}}_3$

3. ${\mathrm{NCl}}_3$

4. ${\mathrm{BCl}}_3$

When ${\mathrm{PCl}}_3$ is hydrolysed then oxyacid of phosphorous is obtained. The basicity of oxyacid is

Which set of oxide of nitrogen is paramagnetic in nature?

1. NO, ${\mathrm{N}}_2\mathrm{O}$

2. ${\mathrm{NO}}_2$, NO, ${\mathrm{N}}_2\mathrm{O}$

3. NO, ${\mathrm{NO}}_2$

4. ${\mathrm{NO}}_2$, ${\mathrm{N}}_2\mathrm{O}$

Correct order of boiling point of group 16 hydrides is

1. H₂O < H₂S < H₂Se < H₂Te

2. H₂Te < H₂Se < H₂S < H₂O

3. H₂S < H₂Se < H₂Te < H₂O

4. H₂O < H₂Te < H₂Se < H₂S

S – S bond is present in

1. ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7$

2. ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8$

3. ${\mathrm{H}}_2{\mathrm{SO}}_5$

4. ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_6$