Explore topic-wise MCQs in SRMJEEE .

This section includes 41 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.

1.

When same quantity of electricity is passed for half an hour, the amount of Cu and Cr deposited are respectively 0.375 g and 0.30 g. Ratio of electrochemical equivalent of Cu and Cr is

A. 0.8
B. 1.25
C. 2.5
D. 1.62
Answer» C. 2.5
2.

When a lead storage battery is discharged

A. lead is formed
B. SO2 is evolved
C. lead sulphate is consumed
D. sulphuric acid is consumed
Answer» E.
3.

When 3.86 amperes current is passed through an electrolyte for 50 minutes, 2.4 grams of a divalent metal is deposited. The gram atomic weight of the metal (in grams) is

A. 24
B. 12
C. 64
D. 40
Answer» E.
4.

What is the time (in sec) required for deposition all the silver present in 125mL of 1 M AgNO3 solution by passing a current of 241.25 amperes? (1F = 96500 coulombs)

A. 10
B. 50
C. 1000
D. 100
Answer» C. 1000
5.

What is the quantity of electricity (in coulombs) required to deposit all the silver from 250ml of 1 M AgNO3 solution? (Ag = 108)

A. 2412.5
B. 24125
C. 4825.0
D. 48250
Answer» C. 4825.0
6.

What is the electrochemical equivalent (in g coulomb–1) of silver?

(Ag = 108; F = Faraday)

A. 108F
B. 108/F
C. F/108
D. 1/108F
Answer» C. F/108
7.

What flows in the internal circuit of a galvanic cell?

A. Electricity
B. Electrons
C. Ions
D. Atoms
Answer» D. Atoms
8.

The highest electrical conductivity of the following aqueous solutions is of [AIEEE 2005]

A. 0.1 M acetic acid
B. 0.1 M chloroacetic acid
C. 0.1 M fluoroacetic acid
D. 0.1 M difluoroacetic acid
Answer» E.
9.

Which of the following electrolytic solutions has the least specific conductance?[Karnataka CET 2008]

A. 0.02 N
B. 0.2 N
C. 2 N
D. 0.002 N
Answer» E.
10.

For the reduction of silver ions with copper metal the standard cell potential was found to be +0.46V at 25°C. The value of standard Gibbs energy, ΔG° wll be (F = 96500 C mol-1) [CBSE AIPMT 2010]

A. –44.5 kJ
B. –98.0 kJ
C. –89.0 kJ
D. –89.0 J
Answer» D. –89.0 J
11.

An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to [CBSE AIPMT 2010]

A. increase in both i.e. number of ions and ionic mobility of ions
B. increase in number of ions
C. increase in ionic mobility of ions
D. 100% ionization of electrolyte at normal dilution
Answer» D. 100% ionization of electrolyte at normal dilution
12.

The potential of a hydrogen electrode at pH = 10 is [West Bengal JEE 2010]

A. 0.59 V
B. 0.00 V
C. –0.59 V
D. –0.059 V
Answer» D. –0.059 V
13.

A concentrated aqueous solution of sodium chloride is called

A. aqueous solution
B. salt solution
C. brine
D. lemonade
Answer» D. lemonade
14.

Electrolytes convert electricity in

A. solid state
B. liquid state
C. gaseous state
D. plasma state
Answer» C. gaseous state
15.

 Electrodes used in production of sodium metal are

A. iron cathode and graphite anode
B. sodium cathode and carbon anode
C. aluminum cathode and fluoride anode
D. none of above
Answer» B. sodium cathode and carbon anode
16.

In chromium plating few drops of Sulphuric acid are added to electrolyte in order to prevent

A. oxidation
B. reduction
C. hydrolysis
D. sublimation
Answer» D. sublimation
17.

By losing one or two electrons atoms of metal are

A. oxidized
B. reduced
C. hydrogenated
D. sublimated
Answer» B. reduced
18.

A reactant containing element that is oxidized is called

A. reducing agent
B. oxidizing agent
C. hydrogen
D. sublime
Answer» B. oxidizing agent
19.

Electrolysis of brine produces

A. chlorine gas
B. hydrogen gas
C. sodium hydroxide
D. all of above
Answer» E.
20.

When zinc is plated on steel, anode is made up of

A. steel
B. oxygen
C. zinc
D. carbon
Answer» D. carbon
21.

Galvanic cells are also named as

A. electrolytic cells
B. battery cells
C. Daniel cells
D. john cells
Answer» D. john cells
22.

Oxidation state of any free element is always

A. 1
B. 2
C. 3
D. 0
Answer» E.
23.

Voltaic cells generates electricity by

A. spontaneous redox reaction
B. non spontaneous redox reaction
C. sublimation reaction
D. thermochemical reaction
Answer» B. non spontaneous redox reaction
24.

A physical or chemical process that occurs by itself is called

A. non spontaneous
B. self occurring process
C. spontaneous process
D. thermodynamic process
Answer» D. thermodynamic process
25.

Process used to deposit one metal over another metal is called

A. electrolysis
B. electroplating
C. carbon plating
D. none of above
Answer» C. carbon plating
26.

Electrolyte among following is

A. NaOH
B. urea
C. glucose
D. benzene
Answer» B. urea
27.

Electrochemical cells convert

A. mechanical energy in to electrical energy
B. potential energy in to electrical energy
C. kinetic energy in to electrical energy
D. chemical energy in to electrical energy
Answer» E.
28.

Conditions for good electroplating are

A. high current density
B. low temperature
C. high concentration of metal in electrolyte
D. all of above
Answer» E.
29.

Lead and Zinc metals occur naturally as

A. oxides
B. sulphite ores
C. carbon ores
D. chloride ores
Answer» C. carbon ores
30.

 Oxidation-reduction reaction involves

A. transfer of neutrons
B. transfer of protons
C. transfer of electrons
D. none of above
Answer» D. none of above
31.

As compare to iron, aluminum has

A. higher tendency to oxidize
B. less tendency to oxidize
C. equal tendency to oxidize
D. none of above
Answer» B. less tendency to oxidize
32.

An electrochemical cell is also called

A. battery cell
B. galvanic cell
C. cell
D. chargeable cell
Answer» C. cell
33.

 In a dry cell anode is made up of

A. zinc
B. calcium
C. sodium
D. graphite
Answer» E.
34.

Oxidation state of group IIIA metals is

A. -3
B. 3
C. 0
D. 1
Answer» C. 0
35.

Elements whose oxidation number is increased are

A. reduced
B. hydrogenated
C. oxidized
D. none of above
Answer» D. none of above
36.

Loss of hydrogen atoms by an element is called

A. hydrogenation
B. oxidation
C. reduction
D. sublimation
Answer» C. reduction
37.

An electrolytic cell uses electrical energy to drive

A. chemical reaction
B. physical reaction
C. no reaction
D. none of above
Answer» B. physical reaction
38.

Electrolyte used for tin plating is

A. sulphide ore
B. stannous sulphate
C. hydrogen sulphate
D. sodium chloride
Answer» C. hydrogen sulphate
39.

Corrosion can be prevented by

A. Alloying
B. Tinning
C. Galvanizing
D. all of above
Answer» E.
40.

On industrial scale sodium metal is prepared by electrolysis of fused

A. NaOH
B. NaCl
C. NaO
D. NH3
Answer» C. NaO
41.

Process in which substance gains electrons is called

A. oxidation
B. hydrogenation
C. sublimation
D. reduction
Answer» E.