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Phosphorus and Its Compounds, Class 12 Chemistry NCERT Solutions

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1. There will be total 20  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. Which allotropic form of Phosphorus glows in dark?

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Question 1 of 20

2. The shape and hybridization of PCl3 molecule is:

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Question 2 of 20

3. The number of P-O-P bonds in cyclic metaphosphoric acid is:

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Question 3 of 20

4. Which oxide of phosphorus is used extensively as a drying agent?

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Question 4 of 20

5. Which of the following describes the bonds in PCl5 ?

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Question 5 of 20

6. What product is formed on disproportionation of H3PO3?

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Question 6 of 20

7. The structural formula for Phosphinic acid is:

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Question 7 of 20

8. Which oxide is represented by the following structure?
1

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Question 8 of 20

9. The number of P-O-P bonds in Pyrophosphoric acid is:

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Question 9 of 20

10. Atomicity of phosphorus is:

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Question 10 of 20

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

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Question 11 of 20

12. What is the oxidation number of the phosphorus in Pyrophosphoric acid?

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Question 12 of 20

13. What is basicity of H3PO4?

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Question 13 of 20

14. Identify the element whose compounds show phosphorescence.

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Question 14 of 20

15. Which isotope of phosphorus is kept under water?

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Question 15 of 20

16. How many forms Black phosphorus has?

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Question 16 of 20

17. What is the oxidation number of the phosphorus in PF3?

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Question 17 of 20

18. What is the anhydride of H3PO3?

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Question 18 of 20

19. What is the P-P-P bond angle in P4 molecule in degrees?

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Question 19 of 20

20. Which one of the following is dibasic acid?

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Question 20 of 20

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