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Irreversible Change

Which of thes...

Question

Which of these will definitely result in a chemical change?
(a) heating
(b) burning
(c) mixing
(d) melting

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Solution

(b) Burning

Burning will definitely result in a chemical change.

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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

Q. Which of the following are physical changes and which are chemical changes ?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.

Q. Pick out chemical changes from the following.

(a) Condensation
(b) Photosynthesis
(c) Evaporation
(d) Burning
(e) Melting

Classify these changes into physical and chemical changes. [5 MARKS]

S.No	Change
1	Melting of Ice
2	Dissolving sugar in water
3	Burning rubber
4	Burning camphor
5	Melting Wax

Which of the following does not involve a chemical reaction ?

(a) digestion of food in our body

(b) process of respiration

(c) burning of candle wax when heated

(d) melting of candle wax on heating

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Irreversible Change

Standard VI Chemistry

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