JKSSB Mock Tests

Which of the following is an example of a physical change? In this example, there is no change in chemical composition of matter. A: Coal changing into coal ash on burning B: Preparing a sweet drink by mixing sugar in water C: White washing walls using a solution of lime and water D: Mixing salt and lemon juice in a beaker

A. Only D
B. Only A
C. Only C
D. Only B
Answer: Option D
Solution (By JKSSB Mock Tests Team)
Preparing a sweet drink by dissolving sugar in water is a reversible physical change because the chemical composition of the sugar and water remains unchanged. The other options involve chemical reactions that form distinctly new chemical substances.
This Question Belongs to: General science Chemistry set 1
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