The value of gas constant R(in cal/mol-k) for hydrogen is

$\frac{1}{2}$

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$2$

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$4$

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$1$

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Solution

The correct option is B
$2$

Since R is the universal gas constant its value is constant for every gas.
The value of R in $c a l / m o l - K$ is $1.9872$
The value is approximately equal to $2 c a l m o l^{- 1} K^{- 1}$
Hence, option B is correct.

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