MCQs on Halogen the Nobel Gases
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1. Which of the following is the strongest acid
- 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