Physics
The complete form of 'IC' in electronics is

Integrated circuit
Independent circuit
Internal circuit
Inbuilt circuit

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Physics
It is more difficult to walk on a sandy road than on a concrete road because

sand is soft and concreter is hard.
the friction between sand and feet is more than that between concrete and feet.
the friction between sand and feet is less than that between concrete and feet.
the sand is grainy but concrete is smooth.

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