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Question

2 moles of potassium reacts with cold water to give ‘x’ moles of hydrogen and 3 moles of iron reacts with steam to give ‘y’ moles of hydrogen. The value of (y)2 – (x)2 will be

2 मोल पोटैशियम ठण्डे जल के साथ अभिक्रिया करके ‘x’ मोल हाइड्रोजन देता है तथा 3 मोल आयरन भाप के साथ अभिक्रिया करके ‘y’ मोल हाइड्रोजन देता है। (y)2 – (x)2 का मान होगा

A
8
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B
14
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C
15
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D
9
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Solution

The correct option is C 15
Solution

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