BITSAT Chemistry Electrochemistry MCQs

Refer to BITSAT Chemistry Electrochemistry MCQs provided below. BITSAT Full Syllabus Chemistry MCQs with answers available in Pdf for free download. The MCQ Questions for Full Syllabus Chemistry with answers have been prepared as per the latest syllabus, BITSAT books and examination pattern suggested in Full Syllabus by BITSAT, NCERT and KVS. Multiple Choice Questions for Electrochemistry are an important part of exams for Full Syllabus Chemistry and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for BITSAT Full Syllabus Chemistry and also download more latest study material for all subjects

MCQ for Full Syllabus Chemistry Electrochemistry

Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for Electrochemistry in Full Syllabus. These MCQ questions with answers for Full Syllabus Chemistry will come in exams and help you to score good marks

Electrochemistry MCQ Questions Full Syllabus Chemistry with Answers

Question: Stronger is oxidising agent, more is

a) Standard reduction potential of that species

b) The tendency to get it self oxidised

c) The tendency to lose electrons by that species

d) Standard oxidation potential of that species

Answer: Standard reduction potential of that species

 

Question: Which of the following relation represents correct relation between standard electrode potential and equilibrium constant?

BITSAT Chemistry Electrochemistry 1

BITSAT Chemistry Electrochemistry 2

BITSAT Chemistry Electrochemistry 3

BITSAT Chemistry Electrochemistry 4

Choose the correct statement(s).

a) I, II and III are correct

b) II and III are correct

c) I, II and IV are correct

d) I and IV are correct

Answer: I, II and IV are correct

 

Question: E° for the cell,

BITSAT Chemistry Electrochemistry 5 at 25°C. The equilibrium constant for the cell reaction BITSAT Chemistry Electrochemistry 6 is of the order of

a) 10–37 

b) 1037

c) 10–17

d) 1017

Answer: 1037

 

Question: Specific conductance of 0.1 M HA is BITSAT Chemistry Electrochemistry 7If BITSAT Chemistry Electrochemistry 8 the dissociation constant Ka of HA is :

a) 1.0 × 10–5 

b) 2.25 × 10–4

c) 2.25 × 10–5

d) 2.25 × 10–13

Answer: 2.25 × 10–5

 

Question: The EMF of the cell Tl/Tl+ (0.001M) || Cu2+ (0.01M) /Cu is 0.83. The cell EMF can be increased by

a) Increasing the concentration of Tl+ ions.

b) Increasing the concentration of Cu2+ ions.

c) Increasing the concentration of Tl + and Cu2+ ions.

d) None of these

Answer: Increasing the concentration of Cu2+ ions.

 

Question: Electrolysis is carried out in three cells

(A) 1.0 M CuSO4 Pt electrode

(B) 1.0 M CuSO4 copper electrodes

(C) 1.0 M KCl Pt electrodes

If volume of electrolytic solution is maintained constant in each of the cell, which is correct set of pH changes in (A), (B) and (C) cell respectively ?

a) Decrease in all the three

b) Increase in all the three

c) Decrease, constant, increase

d) Increase, constant, increase

Answer: Decrease, constant, increase

 

Question: The equilibrium constant for the disproportionation reaction BITSAT Chemistry Electrochemistry 9 at 25°C (EoCu+ /Cu = 0.52V, EoCu2+ /Cu = 0.16V) is

a) 6×10 

b) 6×106

c) 1.2×106

d) 1.2×10-6

Answer: 1.2×106

 

Question: The efficiency of fuel cell is given by the expression, η is

a)

BITSAT Chemistry Electrochemistry 10

b)

BITSAT Chemistry Electrochemistry 11

c)

BITSAT Chemistry Electrochemistry 12

d) None of the above

Answer:

BITSAT Chemistry Electrochemistry 10

 

Question: The mass of the substance deposited when one Faraday of charge is passed through its solution is equal to

a) Relative equivalent weight

b) Gram equivalent weight

c) Specific equivalent weight

d) None of the above

Answer: Gram equivalent weight

 

Question: In the cell reaction BITSAT Chemistry Electrochemistry 13  E0cell = 0.46 V. By doubling the concentration of Cu2+, E0cell is

a) Doubled

b) Halved

c) Increases but less than double

d) Decreases by a small fraction

Answer: Decreases by a small fraction

 

Question: BITSAT Chemistry Electrochemistry 14 is unstable in solution and undergoes simultaneous oxidation and reduction according to the reaction :

BITSAT Chemistry Electrochemistry 15

choose correct Eº for above reaction if Eº Cu2+/Cu = 0.34 V and Eº Cu2+/Cu+ = 0.15 V

a) –0.38 V

b) +0.49 V

c) +0.38 V

d) –0.19 V

Answer: +0.38 V

 

Question: A current of 2.0 A passed for 5 hours through a molten metal salt deposits 22.2 g of metal (At wt. = 177). The oxidation state of the metal in the metal salt is

a) +1

b) +2

c) +3

d) +4

Answer: +3

 

Question: The electrolytic cells, one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio of iron deposited at cathodes in the two cells when electricity is passed through the cells will be

a) 3 : 1

b) 2 : 1

c) 1 : 1

d) 3 : 2

Answer: 3 : 2

 

Question: 1.08 g of pure silver was converted into silver nitrate and its solution was taken in a beaker. It was electrolysed using platinum cathode and silver anode. 0.01 Faraday of electricity was passed using 0.15 volt above the decomposition potential of silver. The silver content of the beaker after the above shall be

a) 0 g

b) 0.108 g

c) 0.108 g

d) 1.08 g

Answer: 0 g

 

Question: Consider the following Eº values BITSAT Chemistry Electrochemistry 16 Under standard conditions the potential for the reaction. BITSAT Chemistry Electrochemistry 17

a) 0.91 V

b) 1.40 V

c) 1.68 V

d) 0.63 V

Answer: 0.91 V

 

Question: The number of coulombs required for the deposition of 108 g of silver is

a) 96500

b) 48250

c) 193000

d) 10000

Answer: 96500

 

Question: Which of the following will form the cathode with respect to iron anode in an electrolyte cell?

a) Mg

b) Al

c) Cu

d) Zn

Answer: Mg

 

Question:  The conductivity of a saturated solution of BaSO4 is 3.06 × 10–6 ohm–1 cm–1 and its equivalent conductance is 1.53 ohm–1 cm2 equiv–1. The Ksp for BaSO4 will be

a) 4 × 10–12 

b) 2.5 × 10–9 

c) 2.5 × 10–13

d) 4 × 10–6

Answer: 4 × 10–12 

 

Question: In a cell that utilises the reaction BITSAT Chemistry Electrochemistry 18 addition of H2SO4 to cathode compartment, will

a) Increase the E and shift equilibrium to the right

b) Lower the E and shift equilibrium to the right

c) Lower the E and shift equlibrium to the left

d) Increase the E and shift equilibrium to the left

Answer: Increase the E and shift equilibrium to the right

 

Question: How long a current of 3 amperes has to be passed through a solution of AgNO3 to coat a metal surface of 80 cm2 and 0.005 mm thick layer. Density of Ag is 10.5 g cm–3.

a) 125.1 seconds

b) 12.5 seconds

c) 155.2 seconds

d) 200 seconds

Answer: 125.1 seconds

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BITSAT Full Syllabus Chemistry Electrochemistry MCQs

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