When sugar is acted upon by conc. sulphuric acid, the product formed is:

ethyl alcohol

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methyl alcohol

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black mass carbon

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carbon dioxide

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Solution

The correct option is B black mass carbon
The white sugar turns into black carbonized tube that pushes itself out of the beaker.
$C_{12} H_{22} O_{11}$ (sugar) $+ H_{2} {S O}_{4}$ (sulphuric acid) $⟶ 12 C + 11 H_{2} O +$ mixture of $H_{2} O$ and acid.
sugar is dehydrated in this case.

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Similar questions

Q. The compound formed when ethyl alcohol is treated with conc. sulphuric acid at 170° C is __________.

Q. When benzene is reacted with conc. sulphuric acid, product formed is:

Q. When oxalic acid is acted upon by sulphuric acid, some products are formed. Oxidation state of carbon in the product/s formed is/are:

Give reasons for the following:
(i) In the contact process, sulphur trioxide formed is dissolved in 98% sulphuric acid and not in water.
(ii) When solution of sulphur dioxide is exposed to air, it gets converted to sulphuric acid.
(iii) When diluting concentrated sulphuric acid, the acid should be added to water and not water to the acid.
(iv) When concentrated sulphuric acid is exposed to air, its volume increases and it becomes slightly dilute.
(v) Sulphuric acid can form two kinds of salts with sodium chloride.
(vi) When barium chloride is added to dilute sulphuric acid, a white precipitate is formed.
(vii) When carbon is heated with concentrated sulphuric acid, carbon dioxide is formed.
(viii) Ammonia gas cannot be dried by passing through concentrated sulphuric acid.
(ix) When concentrated sulphuric acid is added to sugar/glucose, a black mass is left behind.
(x) Concentrated sulphuric acid should not be added to oxalic acid or formic acid in the open laboratory.
(xi) When concentrated sulphuric acid is added to blue crystalline copper sulphate, it turns powdery white.
(xii) Concentrated sulphuric acid must be stored in airtight bottles.
(xiii) Cotton clothes get burnt with concentrated sulphuric acid.
(xiv) H₂SO₄ cannot be prepared by heating sodium sulphate with conc. HCl or HNO₃.

Carbon is a product when conc. sulphuric acid reacts with :

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When sugar is acted upon by conc. sulphuric acid, the product formed is:

The correct option is B black mass carbonThe white sugar turns into black carbonized tube that pushes itself out of the beaker.C12H22O11 (sugar) +H2SO4 (sulphuric acid) ⟶12C+11H2O+ mixture of H2O and acid.sugar is dehydrated in this case.

The correct option is B black mass carbon
The white sugar turns into black carbonized tube that pushes itself out of the beaker.
$C_{12} H_{22} O_{11}$ (sugar) $+ H_{2} {S O}_{4}$ (sulphuric acid) $⟶ 12 C + 11 H_{2} O +$ mixture of $H_{2} O$ and acid.
sugar is dehydrated in this case.