IMSU Physics 2012/2013 Past Questions

Practice each question, then open it to see the full details.

In the electrolysis of CUSO₄ solution using copper electrodes, what happens at anode?

A.oxygen gas is evolved at the anode
B.copper metal is deposited at the anode
C.no reaction takes place
D.the anode dissolves.

Iron or Aluminium container can be used to store concentrated nitric acid because

A.they cannot liberate hydrogen from the acid
B.the metal conduct electrons away from the acid radical
C.the initial acid layer formed by the elements renders them passive
D.the elements are strong material.

A transformer is rated 240V. If the primal coil is 4000 turns and the secondary voltage 12 V, determine the number of turns in the secondary coil.

A.250
B.100
C.150
D.200

Which of the following materials is a conductor?

A.Plastic
B.Sodium
C.wax
D.glass

The charge carriers in gases are

A.ions only
B.electrons and holes
C.Electrons only
D.Electrons and ions

The current in a reverse-biased junction is due to

A.Electrons
B.Majority carriers
C.Holes
D.Minority carriers