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प्रश्न
Multiple choice:
Which of the following is not a characteristic of a chemical change?
पर्याय
It is irreversible.
No net energy change is involved.
New substance is formed.
Involves absorption or liberation of energy.
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उत्तर
No net energy change is involved.
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
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- fractional distillation
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Colour change is noticed
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Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Zinc carbonate.
Match the following:
| 1. | Sodium Chloride | a. | CaSO41/2H2O |
| 2. | Calcium sulphate dihydrate | b. | C2H5Oh |
| 3. | Magnesium sulphate hydrate | c. | CaSO4.2H2O |
| 4. | Calcium sulphate hemihydrate | d. | NaCl |
| 5. | Phenol | e. | MgSO4.H2O |
