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The answer to each of the folowing quest...

The answer to each of the folowing questions is a single digit integar, ranging from 0 to 9. If the correct answers to the question numbers A, B, C and D (say) are 4,0,9 and 2 respectively , then the correct darkening of bubbles should be as shown on the side :
For the reaction involving oxidation of ammonia by oxygen to form nitric oxide and water vapour , the equilibrium constant has the units `("bar")^(n)` . Then n is

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The correct Answer is:
1
` 4 NH_(3) (g) + 5 O_(2) (g) hArr 4 NO(g) + 6H_(2)O (g) `
` K = (p_(NO)^(4)xxp_(H_(2)O)^(6))/(p_(NH_(3))^(4)xxp_(O_(2)^(5)))=("bar")^(10)/("bar")^(10) = ("bar")^(1) :. n = 1 .`
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