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- Grade 9
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Aptitude Tests

Browse Worksheets
Classes
- Grade 9
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- Grade 11
- Grade 12
Aptitude Tests

Browse Worksheets
Classes
- Grade 9
- Grade 10
- Grade 11
- Grade 12
Aptitude Tests

ECAT MDCAT : Chemistry chapter 9 ELECTROCHEMISTRY

Leave a Comment / By Afshan JAMAL / August 15, 2026

Welcome to your ECAT MDCAT : Chemistry chapter 9 ELECTROCHEMISTRY

The equivalent conductivity of 0.1 M week acid is 100 times less than at infinite dilution. The degree of dissociation is

Choose the correct option.

100

10

0.01

0.001

None

The two half cells of a galvanic cell are connected by

Choose the correct option.

Ammeter

Salt bridge

Hydrogen electrode

Copper electrode

None

The electrode through which the electrons enter the electrolytic solution is

Choose the correct option.

Anode

Cathode

May be anode or cathode

None of these

None

K,Ca and Li metals may be arranged in decreasing order of their reduction potential as:

Choose the correct option.

Li, k, Ca

Ca, K, Li

Li, Ca, K

K. Ca. Li

None

Which of the following is the use of electrolysis?

Choose the correct option.

Eletrorefining

Electroplating

Both A and B

None of the above

None

The conductivity of strong electrolyte

Choose the correct option.

Increases on dilution slightly

Does not change on dilution

Decreases on dilution

Depends on density of electrolyte it self

None

Metallic conduction is due to the

Choose the correct option.

Movement of electrons

Movement of ions

Both a and b

None of these

None

In a Galvanic cell

Choose the correct option.

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

None

A certain current liberate 0.5 g of hydrogen in 2 h. How many grams of copper can be liberated by the same time in a copper sulphate solution?

Choose the correct option.

12.7 gm

15.9 gm

31.8 gm

63.5 gm

None

The difference of potential of two electrodes when concentration of solution is 1M each at 25°C and1 atm is called:

Choose the correct option.

Cell reaction.

Electrode potential.

Cell voltage.

Standard cell potential.

None

Lead accumulator contains

Choose the correct option.

30% NaCl solution as electrolyte

30% HCI solution as electrolyte

30% H2SO4 solution as electrolyte

30% NaOH solution as electrolyte

None

Question Image

Choose the correct option.

Cu

H

N

O

None

96500 C of electricity liberates from CuSO4solution

Choose the correct option.

63.5 g of Cu

31.75 g of Cu

96500 g of Cu

100 g of Cu

None

Which one of the following reactions is not spontaneous

Choose the correct option.

None

A half reaction can be defines as:

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It always occurs at cathode.

Involves only half of a mole of electrolyte.

Occurs at one of the electrode.

Goes only half way to completion.

None

Best way to prevent rusting of iron is by

Choose the correct option.

Making iron cathode

Putting it in saline water

Both of these

None of these

None

An electric current is passed through silver nitrate solution using silver electrodes. 10.79 g of silver was found to be deposited on the cathode if the same amount of electricity is passed through copper sulphate solution using copper electrodes, the weight of copper deposited on the cathode is

Choose the correct option.

6.4 g

2.3 g

128.8 g

3.2 g

None

A solution of sodium sulphate was electrolysed using some insert electrodes. The products at the electrodes are

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O2, H2

O2, Na

O2, SO2

O2, S2O8 2-

None

When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to

Choose the correct option.

One gm, atomic weight

One gm, Equivalent

Eletrochemical equivalent

None of the above

None

The oxidation number of chromium in K2Cr2O7is

Choose the correct option.

14

12

6

None of these

None

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ECAT MDCAT : Chemistry chapter 8 THERMO CHEMISTRY AND ENERGETICS OF CHEMICAL REACTION

ECAT MDCAT : Chemistry chapter 11. S- AND P- BLOCK ELEMENTS

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