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Which of the following is a chemical change? A. Bubbling of oxygen gas through water B. Burning of wax of a candle. C. Emitting of light from an electric bulb on passing electric current D. Passing of carbon dioxide gas through lime water. |
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(a) |
A and B |
(b) |
C and D |
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(c) |
B and D |
(d) |
A and D |
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Which of the following is a chemical change? A. Bubbling of oxygen gas through water B. Burning of wax of a candle. C. Emitting of light from an electric bulb on passing electric current D. Passing of carbon dioxide gas through lime water. |
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(a) |
A and B |
(b) |
C and D |
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(c) |
B and D |
(d) |
A and D |
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