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NEET Exam  >  NEET Test  >  NCERT Based Tests  >  Test: Battery & Corrosion - NEET MCQ

Battery & Corrosion - Free MCQ Practice Test with solutions, NEET NCERT


MCQ Practice Test & Solutions: Test: Battery & Corrosion (25 Questions)

You can prepare effectively for NEET NCERT Based Tests for NEET with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Battery & Corrosion". These 25 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 35 minutes
  • - Number of Questions: 25

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Test: Battery & Corrosion - Question 1
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Only One Option Correct Type

This section contains 17 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct

Q.

In corrosion of iron

Detailed Solution: Question 1


(b) Electrons flow from anode to cathode-correct.

Test: Battery & Corrosion - Question 2
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Select the correct statement(s).

Detailed Solution: Question 2

(a) A typical 12V battery consists of six cells connected in series each cell providing a potential of about 2V -correct
(b) No separation of cathodic and anodic compartment, species being in solid state -correct
(c) During recharging, E° < 0, thus ΔG° > 0-correct.

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Test: Battery & Corrosion - Question 3
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"Maintenance-free" batteries now in use in place of commom batteries ,have

Detailed Solution: Question 3

In lead-acid storage battery, specific gravity of H2SO4 changes and water is to be added periodically. In maintenance free battery calcium-containing lead alloy that prevents the electrolytic decomposition of H2O. These batteries are sealed and no maintenance is required

Test: Battery & Corrosion - Question 4
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In the following batteries, alkaline electrolytes are used

I. Mercury
II. Nickel-cadmium
III. Modified Leclanche cell Cell potential is found to be independent of [OH-] in

Detailed Solution: Question 4

I. Mercury battery has anode made of zinc and cathode is a steel vessel in contact with HgO in alkaline medium of KOH and Zn(OH)2.

Net reaction does not involve OH- , hence emf is independent of [OH-].
II. In nickel, cadmium battery, net reaction is

Since, (OH-) species are in solid state, hence emf is independent of (OH-).
III. Alkaline dry cell is a modified version of the Leclanche cell. Net reaction is

Thus, emf is independent of (OH-).

Test: Battery & Corrosion - Question 5
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Following are certain facts about batteries.
I. They are classified as primary, secondary and flow batteries.
II. Leclanche cell is a primary battery.
III. Lead-acid (storage) battery is a secondary cell.

Select the correct facts.

Detailed Solution: Question 5

I. Primary Leclanche cell.
Secondary Lead-storage
Flow battery Fuel-cell
II. True
III. True

Test: Battery & Corrosion - Question 6
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In an atmosphere with industrial smog, copper corrodes to a basic sulphate (and also to a basic carbonate).This basic sulphate is 

Detailed Solution: Question 6

Test: Battery & Corrosion - Question 7
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In which of the following,reactants are not contained with the cell but are continuously supplied from the external source?

Detailed Solution: Question 7

In fuel-cell, reactions are not contained within the cell but are supplied from external source. (It is used as a source of electric power in space vehicles).

Test: Battery & Corrosion - Question 8
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When a buried pipeline is protected from corrosion by connecting to Mg block ,It is known as

Detailed Solution: Question 8

Pipes are made of Iron. Iron can be oxidised toFe2+.
Fe → Fe2+ + 2e-
but when connected to Mg, which is more electropositive that Fe, Mg is oxidised to Mg2+ and in turn reduces Fe2+ (rust) to Fe

It is called cathodic protection but at the cost of Mg (sacrified anode).

Test: Battery & Corrosion - Question 9
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The rate of corrosion is more in the environment which is 

Detailed Solution: Question 9

In presence of moisture, rate of corrosion of metal is enhanced.

Test: Battery & Corrosion - Question 10
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During galvanic corrosion, the more noble metal acts as

Detailed Solution: Question 10

More noble metal is cathode and is protected from rusting by active metal which is anode.

Test: Battery & Corrosion - Question 11
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Some or more factors/species can affect corrosion.
I. Temperature

II. pH

III. Impurity of metal

IV. Conc. HNO3

Select the correct factors/species.

Detailed Solution: Question 11

I. Temperature affects corrosion. However, solubility of dissolved gases decreases with rise in temperature.
II. In acidic medium, pH < 7 (acid rain), enhances corrosion

In basic medium, pH > 7
Fe2+ changes to Fe (OH2) and then to Fe(OH3)(s) (Fe2O3 - rust)
III. Impure metals set up their own electrochemical cells and thus, corrosion is enhanced.
IV. Conc. HNO3 forms an oxide protective layer on the surface of a metal. When metal (as Al) reacts with cone. HNO3, there is reaction but it ceases due to formation of an oxide (Al2O3) layer. Thus, HNO3 can be stored in Al vessel.

Test: Battery & Corrosion - Question 12
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When a lead storage battery is discharged.

Detailed Solution: Question 12

During discharge, sulphuric acid is consumed as :

Note Pb is oxidised to Pb2+ (asPbSO4)PbO2(+4) is reduced to Pb2+ (as PbSO4) and specific gravity of H2SO4 decreases.

Test: Battery & Corrosion - Question 13
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Select the correct statement(s) about corrosion.

Detailed Solution: Question 13

(a) In oxidised state, shine of the metal is furnished, thus, corrosion is the oxidative deterioration of a metal. (b) A mini-cell is set up at the surface at which corrosion takes place.

Reaction is spontaneous-correct.
(c) Impurities also react with active metals by making own cells. Thus, correct.

Test: Battery & Corrosion - Question 14
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Rusting of iron or corrosion of active metal is initiated by

Detailed Solution: Question 14



Acid rain causes corrosion of metals. Even Cu, Ag and Pb are corroded.

Test: Battery & Corrosion - Question 15
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Rusting of iron takes place in

Detailed Solution: Question 15

In the anodic reaction, the metal that is more easily oxidised loses electrons to produce metal ions. In case (a), zinc (more electropositive than Fe) is oxidised. In case (b), iron (more electropositive than Cu is oxidised).
In the cathodic reaction, oxygen gas which is dissolved in a thin film of water on the metal is reduced to OH-.
Thus, rusting of iron does not take place in (a) but it is in (b).
Fe2+ and OH- ions from the half-reactions initiate these further reactions

Test: Battery & Corrosion - Question 16
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The non-chromium redox battery makes use of the reaction

 Thus, cell diagram is  

Detailed Solution: Question 16

Oxidation at Cr electrode (anode)

Thus, oxidation half-cell is

reduction at Fe electrode (cathode)

Thus, reduction half-cell is

Two half-cells are joined by a salt-bridge

Test: Battery & Corrosion - Question 17
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Some statement(s) about dry-cell batteries are

I. Anode is a zinc metal and cathode is inert graphite in a paste of MnO2 and C-black.
II. Electrolyte is a moist paste of NH4CI and ZnCI2.
III. Oxidation product is Zn2+ and reduction product is Mn2O3.

Select the correct statement(s).

Detailed Solution: Question 17

In a dry-cell battery (also called Leclanche cell)
Anode Outer cover (cylindrical) is made of zinc. Oxidation takes place at anode.

Cathode Graphite (carbon) rod in a paste of MnO2 and carbon black.
Electrolyte Paste of NH4CI/ZnCI2 (with starch binder) Reduction takes place.

Thus, I, II and III are correct.

*Multiple options can be correct
Test: Battery & Corrosion - Question 18
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One or More than One Options Correct Type

This section contains 3 multiple type questions. Each question has 4 choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q.

In the protection of iron from the corrosion ,galvanisation is one of the mthods.In such case

Detailed Solution: Question 18

Fe can be protected by making a layer of zinc on it. It is called galvanisation. At the cost of Zn (which is oxidised), Fe is protected.

Thus, Fe which is cathode is protected.
It is called cathodic protection and active metal is thus, sacrified anode.

*Multiple options can be correct
Test: Battery & Corrosion - Question 19
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The rechargeable cell used in calculators and battery-operated tools are based on nickel and cadmium electrodes.It may involve following cell reacion to make cell rection spontaneous

Detailed Solution: Question 19

If (a) and (d) are combined,
E° = + 0.89V, ΔG° < 0 
and E°cell is independent of (OH-).

*Multiple options can be correct
Test: Battery & Corrosion - Question 20
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For Edison storage battery,

Fe(s) | FeO(s) | KOH(aq) | Ni2O3(s) | Ni(s)
The half-cell reactions are  

Ni2O3 (s) + H2O(l) + 2e-  2NiO(s) + OH- (aq);   E0 = 0.40V

FeO(s) + H2O(l) + 2e- Fe(s) + 2OH-(aq);     E0 = -0.87V

Select the correct statement(s) about the cell.    

Detailed Solution: Question 20

To make cell reaction spontaneous, E° cell > 0

Thus, battery emf is independent on [OH-]
 ΔG° = - nF E°cell 
= - 2 x 96500x 1.27
= -245100 J 
= -245.1 kJ
Thus, energy obtained per mole of Ni2O3 consumed i s -245.1 kJ.

Test: Battery & Corrosion - Question 21
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Comprehension Type

This section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d)

Passage I

Silver tarnish is mainly Ag2S, which has the reduction potential 

A tarnish silver spoon is placed in contact with a commercial available metallic product in a glass baking dish.Hot NaHCO3 solution is added and tarnish part from silver spoon is removed.

Q.

What metal or metals do you think are in product?   

Detailed Solution: Question 21

Al metal is used to remove Ag2S.

NaHCO3 in hot water is used as electrolyte and dissolves displaced S2-. 

Test: Battery & Corrosion - Question 22
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Passage I

Silver tarnish is mainly Ag2S, which has the reduction potential 

A tarnish silver spoon is placed in contact with a commercial available metallic product in a glass baking dish.Hot NaHCO3 solution is added and tarnish part from silver spoon is removed.

Q.

Metal  used converts   

Detailed Solution: Question 22

Al metal is used to remove Ag2S.

NaHCO3 in hot water is used as electrolyte and dissolves displaced S2-.

Test: Battery & Corrosion - Question 23
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Passage II

The electrodes in a lead-storage battery are made of Pb and PbO2. During discharge following reactions occurs:

Pb +PbO2 + 2H2SO4 → 2PbSO4 + 2H2O (Pb = 207); E0 = 2.00v

Q.

[SO42-] due to 4.8 M H2SO4 in lead-storage battery is   

Detailed Solution: Question 23

In battery H2SO4 ionises as



Test: Battery & Corrosion - Question 24
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Passage II

The electrodes in a lead-storage battery are made of Pb and PbO2. During discharge following reactions occurs:

Pb +PbO2 + 2H2SO4 → 2PbSO4 + 2H2O (Pb = 207); E0 = 2.00v

Q.

Under zero load ,average voltage is 2.00 V,then ΔG° is  

Detailed Solution: Question 24

In battery H2SO4 ionises as



 

*Answer can only contain numeric values
Test: Battery & Corrosion - Question 25
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One Integer Value Correct Type

This section contains a question, when worked out will result in an integer value from 0 to 9 (both inclusive)

Q.

An expensive but lighter alternate to the lead storage battery is the silver-zinc battery.

Ag2O(s) + Zn(s) + H2O(l) → Zn (OH)2 (s) + 2Ag(s);    E0 = 1.5544V

Numerical value of ΔG° in scientific notation is X x 10Y J.What is the value of X + Y?   


Detailed Solution: Question 25

ΔG°= -nFE° = -2 x 96500 x 1.5544 J
= -3 x 105 
= x x 10y
Thus,  x + y = 8

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About this NEET Practice Test

This test contains 25 MCQs on Battery & Corrosion with detailed solutions for each question. It is part of the NCERT Based Tests for NEET course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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