Tag: nitro compounds

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Questions Related to nitro compounds

Multiple choice chemistry organic nitrogen compounds nitroarenes- preparation and properties nitro compounds types of organic reactions

Nitro benzene is used _________.

  1. as a solvent

  2. In the manufacture of aniline

  3. In cheap scent

  4. All these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is a solvent because it can dissolve a large number of polar substances (polar aprotic solvent)
It can be used to manufacture aniline because it can be reduced by stephen's reduction to anniline
It is also used as a scent because it has pleasant odour

Multiple choice chemistry organic nitrogen compounds nitroarenes- preparation and properties nitro compounds types of organic reactions

Nitro benzene is:
i) steam volatile 

ii) used as a solvent
iii) Aliphatic compounds 
Iv) lighter than water

  1. (i) and (ii) are correct

  2. (iii) and (iv) are correct

  3. (i) and (iii) are correct

  4. (i) and (iv) are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitro benzene is steam volatile and is used as solvent. But it is an aromatic compound and is heavier than water. 

Multiple choice chemistry organic nitrogen compounds nitroarenes- preparation and properties nitro compounds types of organic reactions

Assertion (A) : Nitro benzene on nitration gives m-dinitro benzene.
Reason (R) : $NO _{2}$ group is meta directing group.

  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

  3. Assertion is correct and Reason is wrong.

  4. Assertion is wrong and Reason is correct.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitro benzene on further nitration forms m - dinitro benzene as nitro group is meta directing group. Thus Assertion as well as Reason both are correct and Reason is correct explanation of Asseriton.

Multiple choice chemistry organic nitrogen compounds nitroarenes- preparation and properties nitro compounds types of organic reactions

What is obtained when nitrobenzene is treated sequentially with (i) ${ NH } _{ 4 }Cl/Zn$ dust and (ii) ${ H } _{ 2 }{ SO } _{ 4 }/{ Na } _{ 2 }{ Cr } _{ 2 }{ O } _{ 7 }$ ?

  1. Benzene

  2. Nitrosobenzene

  3. m-Chlorobenzene

  4. p-Chlorobenzene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When Nitrobenzene first reacts with $NH _4Cl/Zn$ it forms phenyl hydroxylamine.

When this reacts with $H _2SO _4/ Na _2Cr _2O _7$ it gives Nitroso benzene as a product.