Cyclone is?

A) Centripetal force

B) Centripetal acceleration

C) Circular moving

D) None of these

PVC stands for?

A) Polyvinyle chloride

B) Polyvinyle chlorine

C) Polyvinyle carbon

D) None of these

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The ozone gas?

A) Destroys the floating germs in the air

B) Increases the floating germs in the air

C) Decreases the floating germs in the air

D) None of these

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