CSEC Chemistry · January 2017 · Paper 1 · Question Q49
A piece of limestone is treated with dilute hydrochloric acid. Which of the following would be observed? I. Effervescence occurs. II. A gas is evolved with a pungent odour. III. A gas is evolved which turns limewater milky.
- (A)I and II only
- (B)I and III only
- (C)II and III only
- (D)I, II and III
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