(a) Which is more conducting : silver or gold ?
(b) Which is a better insulator : glass or ebonite ?

Out of silver and copper, which is better conductor of electricity?

Thermal conductivity of air is less than of felt but is a better heat insulator in comparison to air why?

Choose the correct statement in winter (a) a set of double window is a better insulator (b) window constructed of a single double thickness glass is a good insultor

(a) Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver ? (b) Out of C and CO, which is a better reducing agent at the lower temperature rangein the blast furnace to extract iron form the oxide ore ?

(a) Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver ? (b) Out of C and CO, which is a better reducing agent at the lower temperature rangein the blast furnace to extract iron form the oxide ore ?

Light travels more quickly through water than through glass. a) Which is optically denser: water or glass? b) if a ray of light passes from glass into water, which will it bend: towards the normal or away from the normal?