Assertion (A): Sugar dissolves faster in hot water.
Reason (R): Heating increases the speed of water particles.

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A Both A and R are true and R is the correct explanation of A
B Both A and R are true, but R is not the correct explanation of A
C A is true but R is false
D Both A & R are false

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Answer: A. Both A and R are true and R is the correct explanation of A

Heating gives water particles more energy, so they move faster, hit the sugar crystals more often and spread the sugar out quickly. Both statements are true and the reason explains why sugar dissolves faster in hot water.

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Assertion (A): Sugar dissolves faster in hot water. Reason (R): Heating increases the speed of water particles.

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Assertion (A): Sugar dissolves faster in hot water.
Reason (R): Heating increases the speed of water particles.