Which one of the following is not a chemical change? |
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(a) |
Burning of coal in air |
(b) |
Fermentation of sugar cane juice |
|
(c) |
Crystallisation of table salt from sea water |
(d) |
Cracking of petroleum |
Which one of the following is not a chemical change? |
|
|||
(a) |
Burning of coal in air |
(b) |
Fermentation of sugar cane juice |
|
(c) |
Crystallisation of table salt from sea water |
(d) |
Cracking of petroleum |