Physics
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:

cohesion of water is greater than its adhesion with glass.
density of mercury is greater than that of water.
mercury is a metal.
cohesion of mercury is greater than its adhesion with glass.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Super conductors are substances that

Offer minimum resistance to flow of electric current
Offer high resistance to the flow of electric current
Conduct electricity at high temperature
Conduct electricity at low temperature

ANSWER DOWNLOAD EXAMIANS APP