Question

Choose the correct answer and complete:

1. The atmospheric pressure at sea level is of mercury.
a) 76 cm b) 76 mm c) 760 cm d)76 m
2. The two common forces that are acting everywhere around us are
a) Gravity and friction b) gravity and magnetic force c) Friction and magnetic force
d) Electrostatic force and gravity.
3.
is also called as artificial silk.
a) Polycot b) Rayon c) Nylon D) Polyester
4. Which of the following is a thermosetting Plastic
b) Melamine c) polythene d) Teflon
a) PVC​

Answer 1

1. c. ) 760 cm.
2. b) gravity and magnetic force.
3. b) Rayon.
4. b) melamine.

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