A. free electrons
B. ions
C. metals
D. electrodes
Related Mcqs:
- In electrolytic cell electricity carries________________?
A. spontaneous reaction
B. non-wpontaneous reaction
C. neutralization
D. all of above - 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 - Molten NaCl conducts electricity due to the presence of_______________?
A. Free electrons
B. Free molecules
C. Free ions
D. Atoms of Na and Cl - Electricity in voltaic cell is produced due to_________________?
A. neutralization
B. oxidation
C. reduction
D. both B & C - 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 - 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?
A. 0.1 M
B. 1 m
C. 1 M
D. 0.1 N - Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?
A. ionic substances
B. metallic substances
C. molecular solids
D. covalent network solidsSubmitted by: Mansoor Ul Haque
- Which of the following elements conduct electricity and also melts below 100°C ?
A. Aluminium
B. Sodium
C. Carbon
D. Sulphur - Which one of the following substances conducts electricity by the movement of ions ?
A. Graphite
B. Copper
C. Molten sodium chloride
D. Mercury - The strength of solution of an element whose electrode potential is to be measured is________________?
A. 2M
B. 1N
C. 1m
D. 1M