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Q.

When (X) moles of  boron is fused with (Y) moles of NaOH at STP 67.2 lits of dry H2 gas is liberated. Ratio between X and Y is 

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a

1:6

b

2:3

c

3:1

d

2:6

answer is D.

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Detailed Solution

2B + 6NaOHfuse2Na3BO3 + 3H2

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When (X) moles of  boron is fused with (Y) moles of NaOH at STP 67.2 lits of dry H2 gas is liberated. Ratio between X and Y is