p-Block Elements - Group 15 (Nitrogen Family)

Grade 12 Chemistry — p-Block Elements - Group 15 (Nitrogen Family): 25 practice questions with instant scoring and explanations.

1. The electronic configuration of Group 15 elements is:
2. The element of Group 15 in period 2 is:
3. Nitrogen is predominantly present in atmosphere as:
4. The triple bond in N≡N makes it:
5. Phosphorus exists as:
6. White phosphorus is:
7. Red phosphorus is:
8. Ammonia (NH₃) is prepared by:
9. Haber's process: N₂ + 3H₂ ⇌ 2NH₃ uses:
10. In Haber's process, the catalyst used is:
11. The oxidation state of N in N₂O is:
12. The oxidation state of N in HNO₃ is:
13. Nitric acid is prepared by:
14. In Ostwald's process, ammonia is oxidized to:
15. Phosphine (PH₃) is:
16. The P−H bond in PH₃ is:
17. Phosphoric acid (H₃PO₄) is:
18. Phosphorus pentoxide (P₂O₅) reacts with water to form:
19. Arsenic forms:
20. Arsenic trioxide (As₂O₃) is:
21. The allotropes of nitrogen are:
22. The basicity of PH₃ is:
23. Nitrogen forms oxides with oxidation states:
24. The sp³ hybridized structure of P₄ is:
25. Bismuth (Bi) exhibits oxidation states: