MCQ
Which statement about reactions that produce heat is not correct?
- ABurning magnesium produces hear energy
- BThe overall reaction is exothermic
- ✓The products have more energy than the reactants
- DThe temperature of the surroundings increases
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$A$. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
$B$. Aniline can be purified by steam distillation as aniline is miscible in water.
$C$. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope.
$D$. An organic compound is pure, if mixed $M.P$. is remained same.
Choose the most appropriate answer from the options given below :