Statistics and Probability
Uncategorized
Linear Programming
Matrices and Determinants
Permutations and Combinations
Mathematical Reasoning
Vectors and Three-Dimensional Geometry
Sets, Relations and Functions
Coordinate Geometry (Old)
Binomial Theorem
Sequence and Series
Integral Calculus
Principle of Mathematical Induction
Limits, Continuity and Differentiability
Logarithm, Indices, Surds and Partial Fraction
Linear Inequalities
Conic Sections
Differential Equations
Complex Numbers and Quadratic Equations
Differential Calculus
Trigonometry
Straight Lines
Coordinate Geometry

Vectors
Atoms and Nuclei
Electromagnetic Induction and Alternating Currents
Dual Nature of Matter and Radiation
Thermodynamics
Current Electricity
Electromagnetic Waves
Kinematics
Laws of Motion
Properties of Bulk Matter
Communication System
Oscillations and Waves
Uncategorized
Magnetic Effects of Current and Magnetism
Physical World and Measurement
Behaviour of Perfect Gas and Kinetic Theory
Motion of System of Particles and Rigid Body
Gravitation
Electronic Devices & Semiconductor
Electrostatics
Optics
Work, Energy and Power

Chemical Bonding and Molecular Structure
Some p-Block Elements
Aldehydes, Ketones and Carboxylic Acids
Solid State
Surface Chemistry
Amines
Structure of Atom
Coordination Compounds
Classification of Elements and Periodicity in Properties
Redox Reactions
Alcohols, Phenols and Ethers
Haloalkanes and Haloarenes
Organic Compounds Containing Nitrogen
Chemistry in Everyday Life
Solutions
Chemical Kinetics
p-Block Elements
d and f Block Elements
Equilibrium
Environmental Chemistry
General Principles and Processes of Isolation of Elements
Biomolecules
Polymers
s-Block Element (Alkali and Alkaline earth metals)
Thermodynamics
Hydrocarbons
Some Basic Concepts of Chemistry
Hydrogen
Organic Chemistry- Some Basic Principles and Techniques
Electrochemistry
Uncategorized
States of Matter: Gases and Liquids
Nuclear Chemistry

Electrochemistry

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 1. The potential of the following cell at {tex} 25 ^ { \circ } \mathrm { C } {/tex} is

{tex} - 0.059 \mathrm V {/tex}

{tex} 0.050 \mathrm { V } {/tex}

{tex} - 0.59 \mathrm { V } {/tex}

{tex} 0.5 \mathrm { V } {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 2. {tex} 0.5 \mathrm { F } {/tex} of electricity is passed through {tex} 500 \mathrm { mL } {/tex} of copper sulphate solution. The amount of copper which can be deposited will be

{tex} 63.5 \mathrm g {/tex}

{tex} 31.75 \mathrm { g } {/tex}

{tex} 15.8 \mathrm g {/tex}

Unpredictable

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 3. The standard EMF of decinormal calomel electrode is {tex} 0.268 \mathrm { V } . {/tex} The EMF is

{tex} - 0.298 \mathrm { V } {/tex}

{tex} 0.327 \mathrm { V } {/tex}

{tex} - 0.327 \mathrm { V } {/tex}

{tex} 0.298 \mathrm { V } {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 4. {tex} \mathrm { Ag } | \mathrm { Ag } ^\oplus ( 1 \mathrm { M } ) | \mathrm { Ag }^ \oplus { \| \mathrm { Ag } } {/tex}

1 L solution 1 L solution 0.5 F electricity in the LHS (anode) and 1 F of electricity in the RHS (cathode) in first passed making them independent electrolytic cells at 298 K.EMF of the cell after electrolysis will be

Increased

Decreased

No change

Time is also required

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 5. A current strength of {tex} 1.0 \mathrm { A } {/tex} is passed for {tex} 96.5 \mathrm { s } {/tex} through {tex} 100 \mathrm { mL } {/tex} of a solution of {tex} 0.05 \mathrm { M } \mathrm { KCl } {/tex}. The concentration of the final solution with respect to {tex} \mathrm {\stackrel{\ominus} OH } {/tex} ions is

{tex} 0.005 \mathrm { M } {/tex}

{tex} 0.05 \mathrm { M } {/tex}

{tex} 0.01 \mathrm { M } {/tex}

{tex} 0.001 \mathrm { M } {/tex}

**Correct Marks**

**Incorrectly Marks**

Q 6.

The standard reduction potential values of three metallic cations, X, Y, and Z are 0.52, , and V, respectively. The order of reducing power of the corresponding metal is

Y > Z > X

X > Y > Z

Z >Y > X

Z > X > Y

The smaller the reduction potential of a substance, the more is its reducing power. (Y > Z > X)

**Correct Marks**

**Incorrectly Marks**

Q 7.

What is the value of if and for 0.04 M of at ?

9.3

9.2

4.7

4.8

Use:

**Correct Marks**

**Incorrectly Marks**

Q 8.

The concentration of the KOH solution was

0.30 mol

0.15 mol

0.12 mol

0.075 mol

Equivalent point

Using

**Correct Marks**

**Incorrectly Marks**

Q 9.

The resistance of 1 N solution of acetic acid 250 ohm, when measured in a cell of cell constant

4.6

9.2

18.4

0.023

**Correct Marks**

**Incorrectly Marks**

Q 10.

The two Pt electrodes fitted in a conductance cell are 1.5 cm apart while the crosssectional area of each electrode is 0.75 cm. What is the cell constant?

1.125

0.5 cm

**Correct Marks**

**Incorrectly Marks**

Q 11.

Given that:

Predict which of the following is true

Iodine will be able to reduce bromine

Bromine will be able to reduce iodide ions

Since the reduction potential of

**Correct Marks**

**Incorrectly Marks**

Q 12.

What is the potential of the cell containing two hydrogen electrodes as represented below?

0.236 V

0.0591 V

Or

**Correct Marks**

**Incorrectly Marks**

Q 13.

The standard EMF of quinhydrone electrode is 0.699 V. The EMF of the quinhydrone electrode dipped in a solution with pH = 10 is

0.109 V

1.289 V

**Correct Marks**

**Incorrectly Marks**

Q 14.

The potential of a hydrogen electrode in a solution with

0.59

**Correct Marks**

**Incorrectly Marks**

Q 15.

Faraday’s laws of electrolysis are related to the

The atomic number of the cation

The atomic number of anion

The equivalent weight of the electrolyte

The speed of the cation

**Faraday's first law**

The amount of substance liberated at the electrode is directly proportional to the quantity of electricity passed

Electrochemical equivalent (ECE) is the amount of substance liberated on passing 1 C of electricity

The ECEs of hydrogen, silver, and copper are 0.00001036, 0.001118, and 0.0003292, respectively

**Faraday's second law**

If same quantity of electricity (same current for same time) is passed through different electrolytes, the amount of substance liberated at different electrodes is in the ratio of their respective electrochemical equivalent (or equivalent weights)

**Correct Marks**

**Incorrectly Marks**

Q 16.

500 mL of 1 N solution of

0.85

0.15

0.3

1

Initial

Electricity passed

**Correct Marks**

**Incorrectly Marks**

Q 17.

A solution of 0.65 A flowing for 10 min deposits 3.0 g of the metal which is monovalent. The atomic mass of the metal is

10

50

30

96.5

Let

1 mol of metal

**Correct Marks**

**Incorrectly Marks**

Q 18.

For the electrolytic production of

1

2

3

1.5

**Correct Marks**

**Incorrectly Marks**

Q 19.

For the half cell

At pH = 2, the electrode potential is

1.36 V

1.30 V

1.42 V

1.20 V

In this electrode,

Hence,

**Correct Marks**

**Incorrectly Marks**

Q 20.

When electricity is passed through a solution of

0.5

1

1.5

2

1 mol of

**Correct Marks**

**Incorrectly Marks**

Q 21.

Chromium plating can involve the electrolysis of an electrolyte of an acidified mixture of chromic acid and chromium sulphate. If during electrolysis the article being plated increases in mass by 2.6 g and 0.6

Zero

1

2

**Correct Marks**

**Incorrectly Marks**

Q 22.

Given

Which metal will corrode fastest?

**Correct Marks**

**Incorrectly Marks**

Q 23.

The volume of gases evolved at STP by passing 0.2 A of current for 965 s through an aqueous solution of sodium fumarate is

22.4

11.2 m

89.6

44.8

**Correct Marks**

**Incorrectly Marks**

Q 24.

Two platinum electrodes were immersed in a solution of

Platinum sulphate

Copper hydroxide

Copper sulphate

Sulphuric acid

At cathode:

The blue colour of

At anode:

Since oxidation potential

The colourless solution is due to the formation of

**Correct Marks**

**Incorrectly Marks**

Q 25.

Red hot carbon will remove oxygen from the oxides XO and YO but not from ZO. Y will remove oxygen from XO. Use this evidence to deduce the order of activity of the three metals X, Y, and Z, putting the most reactive first

X, Y, Z

Z, Y, X

Y, X, Z

Z, X, Y

Carbon is a powerful reducing agent from X and Y but not from Z. Y is more reactive than X

Therefore, reactivity series:

Your request has been placed successfully.