CBSE Class 10 Science 2020 · Paper 31/1/3 · Question 7
When sodium hydrogen carbonate is added to ethanoic acid a gas evolves. Consider the following statements about the gas evolved?
(A) It turns lime water milky.
(B) It is evolved with a brisk effervescence.
(C) It has a smell of burning sulphur.
(D) It is also a by-product of respiration.
The correct statements are :
- (a)(A) and (B) only
- (b)(B) and (D) only
- (c)(A), (C) and (D)
- (d)(A), (B) and (D)
Answer
(d) (A), (B) and (D)
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