Statement 1: The standard electrode potential of the system Mg2+ | Mg can be measured with respect to hydrogen electrode.
Statement 2: The standard electrode potential for hydrogen electrode is zero.
 
1. Statement 1 is true, Statement 2 is false.
2. Statement 1 is false, Statement 1 is true.
3. Both Statements 1 and Statement 2 are true.
4. Both Statements 1 and Statement 2 are false.
Subtopic:  Electrode & Electrode Potential |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Given below are two statements: 
 
Assertion (A): Copper sulphate solutions can be store in a zinc pot.
Reason (R): Zinc is more reactive than copper. 

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Electrochemical Series |
 64%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Substances that can oxidise ferrous ions under suitable conditions among the following is:
(Given: \(E_{Fe^{2+}/Fe^{+3}}^{o}\)=−0.77 V, \(E_{F_{2}/F^{-}}^{o}\)=2.87 V, \(E_{Cl_{2}/Cl^{-}}^{o}\) = 1.36 V, \(E_{O_{2}/H_{2}O}^{o}\) = 1.23V)

1. F2
2. Cl2
3. O2
4. All of the above
Subtopic:  Electrochemical Series |
 71%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

The potential of hydrogen electrode in contact with a solution with pH =10, is:

1. −0.0591 V 2. −5.91 V
3. 0.0591 V 4. −0.591 V
Subtopic:  Relation between Emf, G, Kc & pH |
 74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

The emf of the cell in which the following reaction takes place is:

Ni(s)+2Ag+(0.002 M) →Ni2+(0.160 M) + 2Ag(s)
( Given that \(E_{cell}^{o}\)= 1.05 V)

1. Ecell= 9.14 V
2. Ecell= 0.0914 V
3. Ecell= 0.00914 V
4. Ecell= 0.914 V

Subtopic:  Nernst Equation |
 73%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

The cell in which the following reactions occurs:

2Fe3+(aq)+2I-(aq)→2Fe2+(aq)+I2(s) has \(E_{cell}^{o}\)= 0.236 V at 298 K.

The standard Gibbs energy of the cell reaction is -

1.   41.14 kJ mol−1
2.   45.54 kJ mol−1
3. −49.94 kJ mol−1
4. −45.54 kJ mol−1

 

Subtopic:  Relation between Emf, G, Kc & pH |
 75%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Given below are two statements: 
Assertion (A): The conductivity of a solution decreases with dilution.
Reason (R): Conductivity of a solution depends on the number of ions and the number of ions
decreases when the solution is diluted.
     
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Conductance & Conductivity |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The molar conductivity of 0.025 mol L−1 methanoic acid is 46.1 S cm2 mol−1.

The dissociation constant of methanoic acid is-

 Given λ°(H+)= 349.6 S cm2 mol−1 and λ°(HCOO) = 54.6 S cm2 mol

1. \(1.27×10^{-4}mol ~L^{−1}\)
2. \(5.17×10^{-5}mol ~L^{−1}\)
3. \(3.67×10^{-4}mol ~L^{−1}\)
4. \(4.87×10^{-5}mol ~L^{−1}\)

Subtopic:   Kohlrausch Law & Cell Constant |
 59%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

The number of electrons flow through the wire when a current of 0.5 ampere flows through a metallic wire for 2 hours, is-

1. \(6.25×10^{22}\)
2. \(2.25×10^{22}\)
3 \(8.25×10^{22}\)
4. \(4.25×10^{22}\)

Subtopic:  Faraday’s Law of Electrolysis |
 74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

The metals among the following that can be  extracted electrolytically is -

1. K 2. Na
3. Al 4. All of the above
Subtopic:  Electrochemical Series |
 83%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.