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Sulphonation of benzene is done by which...

Sulphonation of benzene is done by which reagent?

A

Conc. `HNO_3 + Conc. H_2SO_4`

B

Fuming sulphuric acid

C

`SO_2`

D

Dilute sulphuric acid

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The correct Answer is:
B
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AAKASH INSTITUTE-MOCK TEST 33-Example
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  3. All of the following are the example of benzenoid aromatic compounds, ...

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  4. Choose the incorrect statement from the following

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  5. which among the following statement is incorrect regarding the product...

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  6. An example of a antiaromatic species is

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  7. Number of sp hybridised carbon atoms in But-2-yne is

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  8. Total number of pi-electrons in benzene is

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  9. Total number of hydrogen molecules required to form ethane from ethyne...

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  10. In anthrcene ,number of pi electrons is equal to x. the value of x is

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  11. The colour chage observed when excess ethyne is passed through the sol...

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  12. For clear water ,its BOD should be less than

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  13. All the following are the effects of depletion of ozone layer, except

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  14. Which of the following is not an example of organochlorine which shows...

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  15. Which of the following gases combines with haemoglobin to form a very ...

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  16. In which compound the reacting electrophile will be directed to ortho ...

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  17. Hydrogenation of benzene is done by

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  18. In which of the following zones of atmosphere ozone layer is present ?

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  19. Sometimes , the colour of photochemical smog becomes brown . The reaso...

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  20. Sulphonation of benzene is done by which reagent?

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