When sugar crystals are added to a hard glass test tube containing conc. sulphuric acid produce ____________.

brown carbon residue

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black carbon residue

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white carbon residue.

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none of these

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Solution

The correct option is A brown carbon residue
Sugar crystals burn in conc sulphuric acid producing brown carbon residue and smell of caramel carbon.

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When sugar crystals are added to a hard glass test tube containing conc. sulphuric acid produce ____________.

The correct option is A brown carbon residueSugar crystals burn in conc sulphuric acid producing brown carbon residue and smell of caramel carbon.

The correct option is A brown carbon residue
Sugar crystals burn in conc sulphuric acid producing brown carbon residue and smell of caramel carbon.