When a piece of charcoal is heated, a certain gas is evolved.The evolved gas is tested by using moist red and blue litmus paper.The evolved gas is (i),which is (ii) in nature.

(i) - carbon dioxide, (ii) - acidic

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(i) - carbon dioxide, (ii) - basic

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(i) - sulphur dioxide, (ii) - acidic

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(i) - sulphur dioxide, (ii) - basic

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Solution

The correct option is A (i) - carbon dioxide, (ii) - acidic
Charcoal is mainly made of carbon, which is a non-metal.When burnt , carbon dioxide is the gas evolved in the highest quantity.Oxides of non-metals are acidic in nature.Carbon dioxide will turn moist blue litmus paper red.However, red litmus paper will remain unaffected with the gas.Hence, carbon dioxide is acidic in nature.

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When a piece of charcoal is heated, a certain gas is evolved.The evolved gas is tested by using moist red and blue litmus paper.The evolved gas is __(i)__,which is __(ii)__ in nature.

When a piece of charcoal is heated, a certain gas is evolved.The evolved gas is tested by using moist red and blue litmus paper.The evolved gas is (i),which is (ii) in nature.