Which of the following force is utilized in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of factories?
A. Magnetic force
B. Gravitational force
C. Electrostatic force
D. Frictional force
Answer:D
Which of the following force is utilized in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of factories?
A. Magnetic force B. Gravitational force C. Electrostatic force D. Frictional force