1) A dilute solution of sodium carbonate was added to two test tubes - one containing dil HCI (a) and the other containing dilute NaOH(b). The correct observation was- (a) a brown coloured gas liberated in test tube A (b) a brown coloured gas liberated in test tube B (c) a colourless gas liberated in test tube A (d) a colourless gas liberated in test tube B solution die dieedinio sul hate solution?
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(c) a colourless gas liberated in test tube A
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