Question

13. Zinc granules on treating with an acid X, form the zinc sulphate
(ZnSO4) salt along with the evolution of a gas Y which burns with a
pop sound when brought near to a burning candle. Identify the acid
X and gas evolved Y.
a. X- Sulphuric acid and Y- Oxygen gas
b. X- Hydrochloric acid and Y- Oxygen gas
c. X- Sulphuric acid and Y- Hydrogen gas
d. X- Hydrochloric acid and Y- Hydrogen gas
14. Which of the following phenomena occur, when a small amount
of acid is added to water?
i. Ionisation
ii. Neutralisation
iii. Dilution
iv. Salt formation
a. (i) and (ii)
b. (i) and (iii)
c. (ii) and (iii)
d. (ii) and (iv)
15. Which of the following indicators turn red in an acidic solution?
i. Phenolphthalein
ii. Litmus
iii. Turmeric
iv. Methyl orange
Choose the correct option:
a. (i) and (ii)
b. (ii) and (iii)
c. Only (ii)
d. (ii) and (iv)
3

Answer 1

Answer:

13.c

14.b

15.d.ii and iv

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