Statement 1: $N H_{3}$ can be best collected by water displacement.
Statement 2: $N H_{3}$ is a polar substance.

Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1

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Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1

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Statement 1 is correct but Statement 2 is not correct

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Statement 1 is not correct but Statement 2 is correct

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Both the Statement 1 and Statement 2 are not correct

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Solution

The correct option is E
Statement 1 is not correct but Statement 2 is correct

Nitrogen, oxygen and hydrogen can be collected by water displacement because they are only slightly soluble in water. But hydrogen chloride or ammonia can not be separated since both are very highly soluble in water and will react to form hydrochloric acid or ammonium hydroxide respectively so statement 1 is not true.
$N H_{3}$ is a polar substance so statement 2 is correct.

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