Question 26
Why is it advised that industries should switch over to cleaner fuels such as CNG and LPG in the TajMahal Zone in Agra?

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Solution

Pollutants in the air are discolouring white marble of TajMahal. The pollutants Oil Refinery near Agra, as well as various industries in and around Agra, are emitting gaseous pollutants such as sulphur dioxide and nitrogen dioxide into the air which cause acid rain.

Acid rain reacts with the carbonates present in marble (calcium carbonate) and limestone of a monument and corrodes it slowly (dissolve it slowly).

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Hydrogen has been used as a rocket fuel. Would you consider it as a cleaner fuel than CNG? Why or why not?

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