Question types

Electrochemistry question types

311 questions across 4 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

311
Questions
4
Question groups
5
Question types
Sample Questions

Electrochemistry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Calculate standard cell potential for a cell having following reaction $2 Al _{( s )}+3 Ni ^{2+} \longrightarrow 2 Al ^{3+}+3 Ni _{( s )}$ 
$\left( E _{ Ni }^{\circ}=-0.25 V , E _{ Al }^{\circ}=-1.66 V \right)$
  • A
    $-0.50 V$
  • 1.41V
  • C
    0.41V
  • D
    0.50V

Answer: B.

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Q 2MCQ1 Mark
Calculate the quantity of electricity required to produce $0.42 g Ag$ at cathode during electrolysis of $AgNO _3$ solution. (molar mass $Ag =108 g mol ^{-1}$ )
  • A
    $257 \cdot 1 C$
  • B
    $470 \cdot 0 C$
  • C
    $965 \cdot 0 C$
  • $375 \cdot 3 C$

Answer: D.

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Q 3MCQ1 Mark
Which element from following has highest negative standard reduction potential?
  • A
    $K$
  • $Li$
  • C
    $Na$
  • D
    $Rb$

Answer: B.

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Q 4MCQ1 Mark
For which of the following electrolyte, Kohlrausch law of independent migration of ions is used to calculate molar conductivity at zero concentration?
  • A
    $NaNO _3$
  • B
    $Na _2 SO _4$
  • $NH _4 OH$
  • D
    $KCl$

Answer: C.

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Q 5MCQ1 Mark
A conductivity cell has two electrodes $18 mm$ apart and having cross sectional cises area $2.0 cm ^2$. What is the value of cell constant?
  • A
    $3.6 cm ^{-1}$
  • $0.9 cm ^{-1}$
  • C
    $0.18 cm ^{-1}$
  • D
    $0.2 cm ^{-1}$

Answer: B.

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What must be the concentration of a solution of silver nitrate to have the molar conductivity of $121.4 \Omega^{-1} cm^2 mol^{-1}$ and the conductivity of $2.428 \times 10^{-3} \Omega^{-1} cm^{-1}$ at $25^{\circ} C$ ?
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