| When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate powder, which one of the following is your observation? |
| (a) No reaction takes place. |
| (b) A colourless gas with pungent smell is released with brisk effervescence. |
| (c) A brown coloured gas is released with brisk effervescence. |
| (d) Formation of bubbles of a colourless and odourless gas. |
Answer:
(d) Formation of bubbles of a colourless and odourless gas.
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