51. What is the SI unit of current?
A. Volt
B. Ampere
C. Ohm
D. Joule
Answer: B
52. What is the SI unit of resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C
53. Ohm’s law is expressed as:
A. V = IR
B. I = VR
C. R = VI
D. V = I/R
Answer: A
54. Conductivity increases with:
A. Decrease in ions
B. Increase in ions
C. No ions
D. Solid state
Answer: B
55. Specific conductance is also called:
A. Resistivity
B. Conductivity
C. Voltage
D. EMF
Answer: B
56. Unit of conductivity is:
A. S cm⁻¹
B. Ohm
C. Volt
D. Ampere
Answer: A
57. Molar conductivity is:
A. Conductivity per mole
B. Resistance per mole
C. Voltage per mole
D. Current per mole
Answer: A
58. Molar conductivity increases with dilution for:
A. Strong electrolytes
B. Weak electrolytes
C. Both
D. None
Answer: C
59. Weak electrolytes show:
A. Small increase
B. Large increase
C. No change
D. Decrease
Answer: B
60. Strong electrolytes show:
A. Sharp increase
B. Slight increase
C. Decrease
D. No change
Answer: B