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o.Give reason i) cutting and piercing tools are made sharp. i)An ee sink in fresh woter but fem't in highly salty water.

Answer»

a)cutting and piercing tools are made sharpbecause the area of contact reduced so that pressure increases andcuttingbecome easy. b) this is because of density as salty water have higher density as compare to fresh water so, egg floats on salty water but sinks in fresh water.



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