Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsShort Answer Type

41.

Calculate the ratio of the rate of diffusion of oxygen to the rate of diffusion of hydrogen at constant temperature and pressure.


42.

Why B2 is paramagnetic whereas C2 is dimagnetic?


43.

How nitrobenzene is identified using Mulliken-Barker test?


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44.

Explain why aniline is not as basic as ammonia.


In aniline, the lone pair over nitrogen atom is in conjugation with the π-electrons of the benzene ring and it takes part in resonance. That is why availabiity of lone pair is not as that as in ammonia. Thus, aniline is less basic than ammonia.


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45.

Explain briefly the cause of Lanthanoid contraction.


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