If 96500 coulomb electricity is passed through CuSO solution, it will liberate
  • 63.5 gm of Cu
  • 31.76 gm of Cu
  • 96500 gm of Cu
  • 100 gm of Cu
Fused NaCl on electrolysis gives ………….. on cathode.
  • Chlroine
  • Sodium
  • Sodium amalgam
  • Hydrogen
The standard electrode potentials for the half cell reactions are:
  • -0.35 V
  • +0.35 V
  • -1.17 V
  • +1.17 V
Which of the following is a secondary cell?
  • Leclanche cell
  • Lead storage battery
  • Concentration cell
  • All of these
For a certain redox reaction, E° is positive. This means that
  • ΔG° is positive, K is greater than 1
  • ΔG° is positive, K is less than 1
  • ΔG° is negative, K is greater than 1
  • ΔG° is negative, K is less than 1
Cell reaction is spontaneous, when
  • E\(_{red}^{0}\) is negative
  • ΔG° is negative
  • E\(_{oxid}^{0}\) is Positive
  • ΔG° is positive
Equilibrium constant K is related to E\(_{cell}^{0}\) and not E\(_{cell}\) because
  • E\(_{cell}^{0}\) is easier to measure than E\(_{cell}\)
  • E\(_{cell}\) becomes zero at equilibrium point but E\(_{cell}^{0}\) remains constant under all conditions
  • at a given temperature, E\(_{cell}\) changes hence value of K can’t be measured
  • any of the terms E\(_{cell}\) or E\(_{cell}^{0}\) can be used
Molar conductivity of 0.15 M solution of KCl at 298 K, if its conductivity of 0.0152 S cm
  • 124 Ω
  • 204 Ω
  • 101 Ω
  • 300 Ω
Electrical conductance through metals is called metallic or electronic conductance and is due to the movement of electrons. The electronic conductance depends on
  • the nature and structure of the metal
  • the number of valence electrons per atom
  • change in temperature
  • all of these
The specific conductivity of N/10 KCl solution at 20°C is 0.0212 ohm
  • 3.324 cm
  • 1.166 cm
  • 2.372 cm
  • 3.682 cm
Faraday’s law of electrolysis is related to
  • Atomic number of cation
  • Speed of cation
  • Speed of anion
  • Equivalent weight of electrolyte
The molar conductivity is maximum for the solution of concentration
  • 0.004 M
  • 0.002 M
  • 0.005 M
  • 0.001 M
Units of the properties measured are given below. Which of the properties has been not matched correctly?
  • Molar conductance = Sm mol
  • Cell constant = m
  • Specific conductance of = S m²
  • Equivalence conductance = S m² (g eq)
How long would it take to deposit 50 g of Al from an electrolytic cell containing Al
  • 1.54 h
  • 1.42 h
  • 1.32 h
  • 2.15 h
The charge required for reducing 1 mole of MnO\(_{4}^{-}\) to Mn
  • 1.93 × 10
  • 2.895 × 10
  • 4.28 × 10
  • 4.825 × 10
How much electricity in in terms of Faraday is required to produce 100 g of Ca from molten CaCl
  • 1F
  • 2F
  • 3F
  • 5F
If a current of 1.5 ampere flows through a metallic wire for 3 hours, then how many electrons would flow through the wire?
  • 2.25 × 10
  • 1.13 × 10
  • 1.01 × 10
  • 4.5 × 10
How many coulombs of electricity is required to reduce 1 mole of Cr
  • 4 × 96500 C
  • 6 × 96500 C
  • 2 × 96500 C
  • 1 × 96500 C
A current of 1.40 ampere is passed through 500 mL of 0.180 M solution of zinc sulphate for 200 seconds. What will be the molarity of Zn
  • 0.154 M
  • 0.177 M
  • 2 M
  • 0.180 M
How much time is required to deposit 1 × 10
  • 125 s
  • 115 s
  • 18.7 s
  • 27.25 s
0 h : 0 m : 1 s

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