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p-Block Elements
NEET Chemistry • 10 questions • Free on ExamBattle
Practice Questions
Q1
The most stable hydride of Group 15 is:
- A. NH₃
- B. PH₃
- C. AsH₃
- D. BiH₃
Q2
Ozone (O₃) is an allotrope of oxygen. Its bond angle is approximately:
- A. 180°
- B. 117°
- C. 120°
- D. 104.5°
Q3
White phosphorus is stored in water because:
- A. It dissolves in water
- B. It ignites spontaneously in air
- C. Water increases its reactivity
- D. It decomposes in air to give toxic gas
Q4
Fluorine cannot be reduced because:
- A. It has no d-orbitals available
- B. It is the strongest oxidising agent
- C. It has high electron affinity
- D. It has low atomic radius
Q5
Which acid is used in the manufacture of fertilisers (e.g., ammonium phosphate)?
- A. HCl
- B. H₃PO₄ (orthophosphoric acid)
- C. HNO₃
- D. H₂SO₃
Q6
ClF₃ (chlorine trifluoride) has which shape?
- A. Trigonal planar
- B. T-shaped
- C. Pyramidal
- D. Linear
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