1.

Sodium hydrogen carbonate, when added to acetic acid, evolves a gas. Which of the following statements are true about the gas evolved? (i) It turns lime water milky (ii) It extinguishes a burning splinter (iii) It dissolves in a solution of sodium hydroxide (iv) It has a pungent odour (a) (i) and (ii)(b) (i), (ii) and (iii) (c) (ii), (iii) and (iv) (d) (i) and (iv)

Answer»

The answer is (a) (i) and (ii)

  • Reaction between Sodium hydrogen carbonate and acetic acid lead to evolution of carbon-dioxide gas. 
  • CO2 turns the lime water milky and extinguish a burning splinter.


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