In a galvanic cell________________?
(A) Chemical energy is converted into electricity
(B) Chemical energy is converted into heat
(C) Electrical energy is converted into chemical energy
(D) Electrical energy is converted into heat
In an electrolytic cell current flows ?
(A) From cathode to anode in outer circuit
(B) From anode to cathode outside the cell
(C) From cathode to anode inside the cell
(D) both B & C
If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
(A) H2 is deposited at cathode
(B) Colour of the solution becomes fade
(C) Cu is deposited at anode
(D) All are possible
The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?
(A) concentrated
(B) dilute
(C) saturated solution
(D) all of the above
ppm means________________?
(A) parts of solute in 1000 parts of solvent
(B) parts of solvent in 1000 parts of solute
(C) parts of solute in one million parts of solution
(D) parts of solvent in one million parts of solute
Capacity of one lead accumulator cell is___________________?
(A) 1.5 volts
(B) 2 volts
(C) 3 volts
(D) 1 volts
Lead accumulators are_______________?
(A) secondary cell
(B) primary cell
(C) voltaic cell
(D) both A & C
Greater value of standard reduction potential smaller will be tendency______________?
(A) to form positive ions
(B) to form negative ions
(C) gain electrons
(D) all are possible
In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be________________?
(A) greater
(B) lesser
(C) sum of reduction and oxidation potentials
(D) none