Chemistry Group V Elements Test Online MCQs

1. Which of the following is acidic?

2. In the treatment of leukemia which one is used:

3. Red and yellow phosphorous are:

4. One mole of calcium phosphide on reaction with excess water gives:

5. The metal which forms amide on passing NH₃ on it at 300°C is:

6. The catalyst used in Harber’s process of NH₃ is:

7. Superphosphate of lime is used in:

8. Phosphorous is present in bones as:

9. Nitric acid may be kept in a bottle of:

10. Phosphorpus pentoxide cannot be used to dry:

11. Red phosphorous is chemically unreactive because:

12. White phosphorous reacts with caustic soda to give PH₃ and NaH₂PO₂. This reaction is an example of:

13. Coloured oxide of nitrogen is:

14. The chemical used for cooling in refrigeration or in manufacture of ice is:

15. The starting material in Brikeland And Eyde process for the manufacture of HNO₃ is:

16. The molecular formula of phosphorous is:

17. Conc. HNO₃ is heated with P₂O₅ to form

18. Which sulphide is used in the manufacture of “strike anywhere”matches:

19. NH₃ molecule can enter into employer formation through:

20. Nitric acid (conc.) oxidizes phosphorous to: