Question

7. Which of the following salts has no water of crystallization?
(a) Blue vitriol (b) Wa
shing soda Baking soda
(d) Gypsum
8. The function of quick lime in soda lime mixture is to
(an Absorb moisture present in soda lime
(b) Increase the efficiency of soda lime
(c) Increase the pH of soda lime
(d) Take part in reaction with NaOH
9. The Ph of a solution of HCL is 4. This shows that the molarity of the solution is
(a) 4.0M (b) 0.4M (c) 0.0001M (d) 0.001M
10. The difference of molecules of water in gypsum and POP is
(a)5/2
(b) 2b
(c) 3/2
(d) 12
11. Which of the following does not form an acidic salt?
(a) Phosphoric acid (b) Carbonic acid (c) Hydrochloric acid
(d) Sulphuric acid
12. The chemical formula of caustic potash is
(a) NaOH
(b) Ca(OH)2 (C) NHOH
OKOH​

Answer 1

Answer:

CH⁴= Methane

C²H6=Ethane

C³H8=Propane

C⁴H10=Butane

Answer 2

Answer:

7.baking soda

8.absorb moisture present in soda lime

9.c. 0.0001M

10.2b

11.carbonic acid

12.KOH

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