Which one of the following solution has highest equivalent conductance?

(a)

0.1 M NaCI

(b)

0.05 M NaCI

(c)

0.005 M NaCI

(d)

0.25 M NaCI

Pick out the correct statement regarding resistance of an electrolytic solution ________.

(a)

It is inversely proportional to the length (I)

(b)

It is inversely proportional to the cross sectional area (A)

(c)

It is directly proportional to the cross sectional area (A)

(d)

Resistivity is denoted by p (rho)

Which among the following is the strongest reducing agent?

(a)

F₂

(b)

Cl₂

(c)

Zn

(d)

Li

Which of the statements about electrolytic conductance is not true?

(a)

Conductivity increases with decrease in viscosity.

(b)

Higher dielectric constant shows lower conductance in solution.

(c)

Temperature increases, conductance also increases.

(d)

Molar conductance increases with increase in dilution.

A device in which spontaneous chemical reaction generates electric current ________.

(a)

Galvanic cell

(b)

Voltaic cell

(c)

Daniel cell

(d)

All the above

Kohlraush's law is applied to calculate ________.

(a)

molar conductance at infinite dilution of a weak electrolyte

(b)

degree of dissociation of weak electrolyte

(c)

solubility of a sparingly soluble salt

(d)

all the above

The limiting molar conductivities of HCI, CH₃COONa and NaCI are respectively 425, 190 and 150 mho cm² mol^-1 at 25°C. The molar conductivity of 0.1 M acetic acid is 9.2 mho cm² mol^-1. The degree of dissociation of 0.1 Macetic acid is ______.

(a)

0.10

(b)

0.02

(c)

0.19

(d)

0.03

Using the data given below fmd out the strongest reducing agent ______.
\({ E }_{ { Cr }_{ 2 }{ O }_{ 7 }^{ 2- } }^{ o }{ Cr }^{ 3+ }=1.33V{ ,E }_{ { Cl }_{ 2 }{ / }{ Cl }^{ - } }^{ o }=1.36V\)
\({ E }_{ { Mn }O_{ 4 }^{ - } }^{ 0 }/{ Mn }^{ 2+ }=1.51V,{ E }_{ { Cr }^{ 3+ }/Cr }^{ o }=-0.74V\)

(a)

Cr

(b)

Cr³⁺

(c)

Cl^-

(d)

Mn²⁺

Recharging of lead storage battery involves ______.

(a)

anode is reduced to pb

(b)

cathode is reduced to pb

(c)

cathode is oxidised to pb

(d)

anode is oxidised to pbO₂

The laws of electrolysis were enunciated first by

(a)

Dalton

(b)

Faraday

(c)

Kekule

(d)

Avogadro

What happens during the electrolysis of molten sodium chloride?

(a)

Cl₂ is released at the cathode

(b)

Liquid sodium is obtained at the anode

(c)

The emf of the overall reaction is -4.07 V

(d)

Cl₂ is released at the cathode and Liquid sodium is obtained at the anode

For the given cell Cr_(s)|Cr³⁺_(aq)||Cu²⁺_(aq)|Cu_(s) which is correct?

(a)

Cr is the anode

(b)

Cu is the anode

(c)

Overall cell reaction is 2Cr³⁺_(aq) +3Cu_(s) ⟶ 2Cr_(s) + 3Cu²⁺_(aq) 

(d)

Cu is the anode and Overall cell reaction is 2Cr³⁺_(aq) +3Cu_(s) ⟶ 2Cr_(s) + 3Cu²⁺_(aq) 

When one coulomb of electricity is passed through an electrolytic solution the mass deposited on the electrode is equal to ______.

(a)

equivalent weight

(b)

molecular weight

(c)

electrochemical equivalent

(d)

one gram

Faraday's laws of electrolysis are related to ______.

(a)

atomic number of the cation

(b)

atomic number of the anion

(c)

equivalent weight of the electrolyte

(d)

speed of the cation

The specific conductance of a 0.01 M solution of KCI is 0.0014 ohm^-1 em^-1 at 25°C. Its equivalent conductance is ______.

(a)

14 ohm^-1 cm²eq^-1

(b)

140 ohm^-1 cm²eq^-1

(c)

1.4 ohm^-1 cm²eq^-1

(d)

0.14 ohm^-1 cm²eq^-1