Which of the following is not a chemical change ?

Heating of wax

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Rusting of iron

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Heating of limestone

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Burning of candle

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Solution

The correct option is A Heating of wax
Heating of wax is a physical change because only the state is changing from solid to liquid.

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Similar questions

Q. Which of the following will result in a chemical change?
(a) mixing salt and water
(b) heating candle wax
(c) adding curd to milk
(d) adding water to milk

Which of the following does not involve a chemical reaction ?

(a) digestion of food in our body

(b) process of respiration

(d) melting of candle wax on heating

Q. Why burning of candle is a chemical change?

Burning of a candle is a chemical as well as physical change, why?

1. The physical change occurs when the wax of candle melts and it loses its shape
2. The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame
3. The burning of a candle is only a chemical change
4. The burning of a candle is only a physical change

Q. Is burning of a substance always a chemical change? Explain how burning of candle involves both physical and chemical change.

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Which of the following is not a chemical change ?

The correct option is A Heating of waxHeating of wax is a physical change because only the state is changing from solid to liquid.

The correct option is A Heating of wax
Heating of wax is a physical change because only the state is changing from solid to liquid.