Question

A student takes 2 ml acetic acid, in a dry test-tube and add a pinch of sodium hydrogen carbonate to it. He makes the following observation : I. A colourless and odourless gas evolves with a brisk effervescence. II. The gas turns lime water milky when passed through it. III. The gas burns with an explosion when a burning splinter is brought near it. IV. The gas extinguishes the burning splinter that is brought near it. The correct observations are : (A) I, n, and m (B) n, m and IV (C) 111, IV andl (D) W, 1 and H

Answer 1

The correct observations are I,II and IV