Question # 1

The conductivity of strong electrolyte

Choose an answer

Increases on dilution slightly

Does not change on dilution

Decreases on dilution

Depends on density of electrolyte it self

In a Galvanic cell

Choose an answer

Chemical energy is converted into electricity

Chemical energy is converted into heat

Electrical energy is converted into heat

Electrical energy is converted into chemical energy

Standard reduction electrode potential of three metals A, B and C are erespectively + 0.05 V, -3.0 and -1.2V. The reducting power of

Choose an answer

B > C > A

A > B > C

C > B > A

A > C > B

96500 C electricity is passed through CuSO₄. The amount of copper precipitated is

Choose an answer

0.25 mole

0.5 mole

1.0 mole

2.00 mole

The value of SHE is cathode and anode is always taken to be

Choose an answer

One

Zero

Different

Same

Strong oxidizing agents have

Choose an answer

Greater positive value of standard reduction potential

Lesser positive value of standard

Greater negative value of standard

None of these

An electric current is passed through silver voltameter connected to a water voltmeter. The cathode of the silver voltameter is 0.108 g more at the end of the electrolysis. The volume of oxygen evolved at STP is

Choose an answer

56 cm³

550 cm³

5.6 cm³

11.2 cm³

Corrosion reaction are

Choose an answer

Spontaneous redox reaction

Non-spontaneous acid-base reactions

Spontaneous acid-base reactions

None of these

By using graphite electrode the electrolysis of aqueous solution of NaCI produces at anode

Choose an answer

H₂gas

Cl₂gas

NaOH

No metal

Metallic conduction is due to the

Choose an answer

Movement of electrons

Movement of ions

Both a and b

None of these

Which one of the following reaction takes place spontaneously

Choose an answer

What are the products electrolysis of aqueous sodium chloride at two electrodes

Choose an answer

Chlorine at anode and oxygen at cathode.

Hydrogen at anode and chlorine at cathode.

Chlorine at anode and hydrogen at cathode.

Chlorine at anode and sodium at cathode.

Sodium metal is obtained by the electrolysis of fused NaCl in cell is called

Choose an answer

Nelson's cell

Down's cell

Daniell cell

Voltaic cell

Coupling of Pb with its Pb⁺⁺/Pb = -0.13 V and Ag with Ag⁺/ Ag = +0.80 V, the cell reaction

Choose an answer

The cell in which a non-spontaneous redox reaction takes place as a result electricity is known as :

Choose an answer

Electrolytic cell.

Voltaic cell.

Daniel cell.

Dry cell.

Which of the following (1 M) conducts more electricity?

Choose an answer

Sulphuric acid

Boric acid

Nitric acid

Phosphorus acid

Calculate the amount of charge flowing in 2 minute in a wire of resistance 10Ωwhen a potential difference of 20 V is applied

Choose an answer

120 C

240 C

20 C

4 C

The unit of specific conductivity is

Choose an answer

Ohm cm^-1

Ohm cm^-2

Ohm^-1cm

Ohm^-1cm^-1

Coinage metals like Au, Pt, Ag and Cu are the least reactive metals and don't liberate H₂gas when treated with acids because

Choose an answer

These have very high positive values of reduction potentials

These have very high negative values of reduction potentials

Their ionization potentials are lowest

Their reduction potentials are close to SHE

Li has the lowest reduction potential while the element with highest reduction potential is

Choose an answer

H

F

O

N

Metallic conduction is also called as :

Choose an answer

Ionic conduction.

Protonic conduction.

Electronic conduction

Super conduction

In lead accumulator the electrolyte is H₂SO₄solution is

Choose an answer

30% H₂SO₄

60% H₂SO₄

80% H₂SO₄

90% H₂SO₄

When a metal is dipped in 1 molar of its solution at 298 K. then potential set up is called

Choose an answer

Standard electrode potential

Electric charge

Ionization potential

Electroplating

What will be the weight of deposited silver on passing 965 coulombs of electricity in solution of AgNO₃?

Choose an answer

1.08 g

2.16 g

0.54 g

0.27 g

F₂, Cl₂, Br₂and l₂lie below SHE is the Electro chemical series that is why these

Choose an answer

Undergo reduction

Undergo oxidation

Liberate H₂gas with steam

None of these

Sodium can be obtained by :

Choose an answer

Electrolysis of acidified water.

By heating NaCl and water at 100°

Electrolysis of molten sodium chloride.

Electrolysis of aqueous sodium chloride.

Which of the following statements is true about Galvanic cell

Choose an answer

Anode is negatively charged

Reduction occurs at anode

Cathode is positively charge

Reduction occurs at cathode

Zn does not displace Mg from MgSO₄solution because

Choose an answer

Zn is more electropositive than Mg

Zn is below Mg in electropositive series

Zn is above Mg in electrochemical series

Zn is trivalent Mg is divalent

A standard hydrogen electrode (S.H.E) consists of a platinized platinum electrode dipped in 1 molar solution of H⁺ions and hydrogen gas is passed at a pressure of

Choose an answer

One pascal

One kilo pascal

One atmoshpere

Then atmoshpere

Fe can displace Cu form CuSO4solution because

Choose an answer

Fe is ferromagnetic

Fe is below Cu in electrochemical series

Fe is above Cu in electrochemical series

Fe exists in divalent oxidation state

More Classes

Other Links

ECAT Chemistry Chapter 10 Electrochemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer