Paper on reaction with concentrated ___ turns black and has a burnt look.

conc. sulphuric acid

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lactic acid

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boric acid

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dil. hydrochloric acid

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Solution

The correct option is A conc. sulphuric acid
Concentrated sulphuric acid is a very good dehydrating agent. When it comes in contact with the paper, it reacts with the paper and removes the water content from the paper. As a result, color of the paper changes to black and it appears to be burnt.

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Paper on reaction with concentrated ___ turns black and has a burnt look.

The correct option is A conc. sulphuric acidConcentrated sulphuric acid is a very good dehydrating agent. When it comes in contact with the paper, it reacts with the paper and removes the water content from the paper. As a result, color of the paper changes to black and it appears to be burnt.

The correct option is A conc. sulphuric acid
Concentrated sulphuric acid is a very good dehydrating agent. When it comes in contact with the paper, it reacts with the paper and removes the water content from the paper. As a result, color of the paper changes to black and it appears to be burnt.