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Question

Which of the following is used in the contact tower?


A

Calcium oxide

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B

Anhydrous calcium chloride

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C

Concentrated sulphuric acid

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D

Concentrated Nitric acid

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Solution

The correct option is C

Concentrated sulphuric acid


Concentrated sulphuric acid is hygroscopic in nature and thus acts as a good drying agent in the contact tower.


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