A student takes sodium hydrogen carbonate powder in a test tube and pours 4-5 drops of acetic acid over it. He observes _______.(A) no reaction in the test tube(B) bubbles of a colourless and odourless gas(C) a colourless gas with a pungent smell(D) evolution of brown coloured gas along with a brisk effervescence in the test tube

A student takes sodium hydrogen carbonate powder in a test tube and po

1.	A student takes sodium hydrogen carbonate powder in a test tube and pours 4-5 drops of acetic acid over it. He observes _______.(A) no reaction in the test tube(B) bubbles of a colourless and odourless gas(C) a colourless gas with a pungent smell(D) evolution of brown coloured gas along with a brisk effervescence in the test tube
Answer» (B) bubbles of a colourless and odourless gas