Among the following molecules, 

(i) $\stackrel{..}{X}e{O}_3$

(ii) $\stackrel{..}{X}eO{F}_4$

(iii) $\stackrel{..}{X}e{F}_6$

Those having the same number of lone pairs on Xe are

1. (i) and (ii) only

2. (i) and (iii) only

3. (ii) and (iii) only

4. (i), (ii) and (iii) only

Nitrogen gas is liberated by the thermal decomposition of:

1. ${\mathrm{NH}}_4{\mathrm{NO}}_2$                                 

2. ${\mathrm{NaN}}_3$

3. ${\left({\mathrm{NH}}_4\right)}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$                           

4. All of the above. 

The compound among the following with the lowest pK_a value is?

1. H₂O

2. H₂S

3. H₂Se

4. H₂Te

What order does the stability of interhalogen compounds follow?

1. IF₃  > BrF₃  > CIF₃

2. BrF₃ > IF₃ > ClF₃

3. ClF₃ > BrF₃ > IF₃

4. ClF₃ > IF₃ > BrF₃

The molecular shapes of SF₄, CF₄ and XeF₄ are: 

Which of the following liquids has the ability to climb the glass vessel's wall?

1. Alcohol 

2. Liquid He

3. Liquid $N_2$

4. Water

The gas that is used in the gas thermometer is:

Radon is used in the treatment of:

The number of \(\mathrm{S=O}\) bonds present in \(\mathrm{H}_2\mathrm{S}_2 \mathrm{O}_8\) is:

Incorrect order among the following is: