Statement 1 It is easier to pull a heavy object than to push it on a level ground. and Statement 2 The magnitude of frictional force depends on the nature of the two surfaces in contact.

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Both statements are correct. But statement-2, does not explain correctly, statement- 1 . Correct explanation is : "There is increase in nomal reaction when the object is pushed and there is decrease in normal reaction when the object is pulled (but strictly not horizontally).

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