Halogen – The Nobel Gases

• ClO₃(OH)
• ClO₂(OH)
• SO(OH)₂
• SO₂(OH)₂

ClO₃(OH)

2. Which one of the following species is not a pseudohalide : 

• CNO⁻
• RCOO⁻
• OCN⁻
• NNN⁻

RCOO

3. Bromine can be liberated from potassium bromide solution by the action of : 

• Iodine solution
• Chlorine water
• Sodium chloride
• Potassium iodide

Chlorine water

4. Which of the following reacts with glass : 

• H₂SO₄
• HF
• HNO₃
• HCl

HF

5. Which among the following is paramagnetic : 

• Cl₂O
• ClO₂
• Cl₂O₇
• Cl₂O₆

ClO₂

6. The inert gases can be isolated and separated by : 

• Electrolysis of their compound
• Fractional distillation of liquid air
• Adsorption on charcoal
• Both 2 and 3

Both 2 and 3

7. The lightest gas which is not inflammable : 

• O₂
• H₂
• N₂
• He

He

8. The structure of XeF₆ is : 

• Distorted Octahedral
• Pyramidal
• Tetrahedral
• None of these

Distorted Octahedral