Physics
In hydro power station, the motion produced in turbines is due to

Burning of coal
Burning of diesel
Production of steam
Flow of water

ANSWER DOWNLOAD EXAMIANS APP

Physics
Skating on ice is possible because

The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
The surface of ice is smooth
Ice is cold
The pressure on the ice due to skate raises its melting point

ANSWER DOWNLOAD EXAMIANS APP