. A student takes 2 mL acetic acid in a dry test tube and adds a pinch of sodium hydrog carbonate to it. He makes the following observations


I. A colourless and odourless gas evolves with a brisk effervescence. II. The gas turns lime water milky when it is 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, II and III        

(B) II, III and IV      

(C) Ill, IV and I        

(D) IV, I and II

 

Best Answer

Ans. (D) IV, I and II

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