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The answer to each of the following ques...

The answer to each of the following questions is a single digit integer, ranging from 0 to 9. If correct answers to the question number A,B,C and D (say) are 4,0,9 and 2 respectively, then correct darkening of bubbles should be as shown on the side.
(C) Reaction of `Br_(2)` with `Na_(2)CO_(3)` in aqueous solution gives sodium bromide and sodium bromate with evolution of `CO_(2)` gas. The number of sodium bromide molecules involved in the balanced chemical equation is .....................

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The correct Answer is:
5
`3Br_(2)+3 Na_(2)CO_(3) rarr 5 NaBr+NaBrO_(3)+CO_(2)`
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Reaction of Br_(2) with Na_(2)CO_(3) in aqueous solution gives sodium bromide and sodium bromate with evolution of gas. The number of sodium bromide molecules formed in the balanced chemical equation is :

Reaction of Br_(2) with Na_(2)CO_(3) in aquesous solution gives sodium bromide bromate with evolution of CO_(2) gas. The number of sodium bromide molecules involved in the balanced chemical equation is:

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