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
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B)bubble of colorless and odorless gass
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Answer:
(B)
Explanation:
(B) bubbles of colourless and odourless gas
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