Question

1. Write the acidic, basic and amphoteric oxide of group 15th
2. Nitrogen has 5 oxides like N2O, NO, N2O3, NO2 and N2O5 with oxidation number
1,2,3,4 and 5 respectively. Identify the acidic and neutral oxides and also arrange
them in increasing order of acidic character
3. Why nitric oxides behave as free radical?
4. Why nitrogen dioxide is known as nitronium nitrate?
5. (SiH3)3N is a planer while (CH3)3N is pyramidal in shape. Reason
6. What are oxo-acids or oxy-acids
7. What is fisher salt?
8. Except nitrogen all elements of group 15 forms sulphite. Reason
9. Name the all three types of hydrides of nitrogen with chemical formula and also find
the hybridization of N atom in all
10. Why does R3P = O exist but R3N = O does not (R = alkyl group)?
11. In the lab preparation methods of ammonia, quick lime (CaO) is used to remove the
moisture while other dehydrating agents like CaCl2, P2O5 and H2SO4 are not used.
Reason
12. Ammonia is collected over water. Why?
13. Name one purification process where ammonia is obtained as side product
14. Manufacturing of ammonia by Haber process and discuss on the conditions favorable
for the haber process
15. Difference between red phosphorus and white phosphorus
16. Preparation method and properties of phosphine
17. Uses of phosphine
18. Prove that phosphine is basic in nature
19. Bond angle in PH4
+
is higher than that in PH3. Why?
20. Why does PCl3 fume in moisture?
21. Ionized form of PCl5

Answer 1

Answer:

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