NEET Chemistry Electrochemistry MCQs Set C

Refer to NEET Chemistry Electrochemistry MCQs Set C provided below available for download in Pdf. The MCQ Questions for Full Syllabus Chemistry with answers are aligned as per the latest syllabus and exam pattern suggested by NEET, 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 improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for NEET 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.

Electrochemistry MCQ Questions Full Syllabus Chemistry with Answers

 

 

Question: How many grams of cobalt metal will be deposited when a solution of cobalt(II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u)

  • a) 0.66
  • b) 4.0
  • c) 20.0
  • d) 40.0

Answer: 20.0

 

Question: A 5 ampere current is passed through a solution of zinc sulphate for 40 minutes. The amount of zinc deposited at the cathode is

  • a) 0.4065 gm
  • b) 65.04 gm
  • c) 40.65 gm
  • d) 4.065 gm

Answer: 4.065 gm

 

Question:  The molar conductances of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91 ohm–1 cm2mol–1 respectively. The molar conductance of CH3COOH at infinite dilution is

  • a) 698.28 ohm–1 cm2 mol–1
  • b) 540.48 ohm–1 cm2 mol–1
  • c) 201.28 ohm–1 cm2 mol–1 
  • d) 390.71 ohm–1 cm2 mol–1

Answer:  390.71 ohm–1 cm2 mol–1

 

Question:  E° for the cell, Zn|Zn2+(aq)||Cu2+(aq)|Cu is 1.10 V at 25ºC, the equilibrium constant for the reaction

NEET Chemistry Electrochemistry Online Test Set E

is the order of

  • a) 10+18
  • b) 10+37
  • c) 10–28
  • d) 10–37

Answer:  10+37

 

Question:  For the cell reaction, Cu2+ (C1· aq) + Zn(s) = Zn2+ (C2· aq) + Cu(s) of an electrochemical cell, the change in Free Energy ΔG at a given temperature is a function of

  • a) ln (C2
  • b) ln (C2/C1)
  • c) ln (C1
  • d) ln (C1+ C2)

Answer:  ln (C2/C1)

 

Question:  The specific conductance of a 0.1 N KCl solution at 23°C is 0.012 ohm–1 cm–1. The resistance of cell containing the solution at the same temperature was found to be 55 ohm. The cell constant will be

  • a) 0.918 cm–1
  • b) 0.66 cm–1
  • c) 1.142 cm–1 
  • d) 1.12 cm–1

Answer:  0.66 cm–1

 

Question:  For the disproportionation of copper 2Cu+ → Cu2+ Cu, E° is (Given E° for Cu2+/Cu is 0.34 V and E° for Cu2+/Cu+ is 0.15 V)

  • a) 0.49 V
  • b) –0.19 V
  • c) 0.38 V
  • d) –0.38 V

Answer: 0.38 V

 

Question: Cell reaction is spontaneous when

  • a) ΔG° is negative 
  • b) ΔG° is positive
  • c) ΔE°Red is positive
  • d) ΔE°Red is negative

Answer:  ΔG° is negative 

 

Question:  Equivalent conductances of Ba2+ and Cl ions are 127 and 76 ohm–1 cm–1 eq–1 respectively. Equivalent conductance of BaClat infinite dilution is (in the unit ohm–1 cm–1 eq–1)

  • a) 139.5
  • b) 101.5
  • c) 203
  • d) 279

Answer: 203

 

Question:  Standard electrode potentials are

Fe2+/Fe ; E° = –0.44 volts

Fe3+/Fe2+ ; E° = 0.77 volts

Fe2+, Fe3+ and Fe blocks are kept together, then

  • a) Fe3+ increases
  • b) Fe3+ decreases
  • c) Fe2+/Fe3+ remains unchanged
  • d) Fe2+ decreases

Answer:  Fe3+ decreases

 

More Questions.................................

 

Question:

PbO2→ PbO     ΔG298< 0

SnO2→ SnO    ΔG298> 0

Most probable oxidation state of Pb and Sn will be

  • a) Pb4+, Sn4+ 
  • b) Pb4+, Sn2+
  • c) Pb2+, Sn2+ 
  • d) Pb2+, Sn4+

Answer:  Pb2+, Sn4+

 

Question: The most convenient method to protect the bottom of ship made of iron is

  • a) Coating it with red lead oxide
  • b) White tin plating
  • c) Connecting it with Mg block
  • d) Connecting it with Pb block

Answer: White tin plating

 

Question:  In electrolysis of NaCl when Pt electrode is taken then His liberated at cathode while with Hg cathode it forms sodium amalgam

  • a) Hg is more inert than Pt
  • b) More voltage is required to reduce H+ at Hg than at Pt
  • c) Na is dissolved in Hg while it does not dissolve in Pt
  • d) Conc. of H+ ions is larger when Pt electrode is taken

Answer:  More voltage is required to reduce H+ at Hg than at Pt

 

Question:  On the basis of the information available from the reaction of O2

NEET Chemistry Electrochemistry Online Test Set E-48

the minimum e.m.f. required to carry out electrolysis of Al2Ois (F = 96500 C mol–1)

  • a) 2.14 V
  • b) 4.28 V
  • c) 6.42 V
  • d) 8.56

Answer: 2.14 V

 

Question:  The e.m.f. of a Daniel cell at 298 K is E1

NEET Chemistry Electrochemistry Online Test Set E-49

When the concentration of ZnSO4 is 1.0 M and that of CuSO4 is 0.01 M, the e.m.f. changed to E2. What is therelationship between E1and E2?

  • a) E1> E2
  • b) E1< E2  
  • c) E1= E2 
  • d) E2= 0 ≠ E1

Answer:  E1> E2

 

Question:  The standard e.m.f. of a galvanic cell involving cell reaction with n = 2 is found to be 0.295 V at 25°C. The equilibrium constant of the reaction would be (Given F = 96500 C mol–1, R = 8.314 J K–1 mol–1)

  • a) 2.0 × 1011
  • b) 4.0 × 1012
  • c) 1.0 × 102
  • d) 1.0 × 1010

Answer: 1.0 × 1010

 

Question: The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is (Atomic Mass: Al = 27)

  • a) 270 kg
  • b) 540 kg
  • c) 90 kg
  • d) 180 kg

Answer: 90 kg

 

Question:  Consider the half-cell reduction reaction :

Mn2+ + 2e → Mn, Eo = –1.18 V

Mn2+ →  Mn3+ + e, Eo = –1.51 V

The Eo for the reaction 3 Mn2+→  Mn0 + 2 Mn3+, and possibility of the forward reaction are, respectively

  • a) –2.69 V and no
  • b) –4.18 V and yes
  • c) +0.33 V and yes
  • d) +2.69 V and no

Answer: –2.69 V and no

 

Question: Aqueous solution of which of the following compounds is the best conductor of electric current?

  • a) Ammonia, NH3 
  • b) Fructose, C6H12O6
  • c) Acetic acid, C2H4O2 
  • d) Hydrochloric acid, HCl

Answer: Hydrochloric acid, HCl

 

Question: A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as

  • a) Ni-Cd cell
  • b) Fuel cell
  • c) Electrolytic cell
  • d) Dynamo

Answer: Fuel cell

 

Question:  A current of 0.965 ampere is passed through 500 ml of 0.2 M solution of ZnSO4 for 10 minutes. The molarity of Zn2+ after deposition of zinc is

  • a) 0.1 M
  • b) 0.5 M
  • c) 0.8 M
  • d) 0.194 M

Answer: 0.194 M

 

Question:  The hydrogen electrode is dipped in a solution of pH = 3 at 25°C. The reduction potential of the electrode would be

  • a) 0.177 V
  • b) 0.087 V
  • c) –0.177 V
  • d) 0.059 V

Answer: –0.177 V

 

Question:   The two platinum electrodes filted in a conductance cell are 1.5 cm apart while the cross sectional area of each electrode is 0.75 cm2. What is the cell constant?

  • a) 1.25 cm
  • b) 0.5 cm
  • c) 2.0 cm–1
  • d) 0.2 cm–1

Answer:  2.0 cm–1

 

Question:  A 100 watt, 110 volt lamp is connected in series with an electrolytic cell containing CdSO4 solution, the weight of Cd deposited by the current for 10 hrs is (At. wt. Cd = 112.4)

  • a) 19.06 g
  • b) 38.12 g
  • c) 1.906 g
  • d) 3.812 g

Answer: 19.06 g

 

Question: The quantity of electricity required to reduce 12.3 g of nitro benzene to aniline assuming 50% current effeciency is

  • a) 115800 C
  • b) 57900 C
  • c) 231600 C
  • d) 28950 C

Answer: 115800 C

 

Question:   Electrolysis of H2SO4(conc.) gives the following at anode

  • a) H2
  • b) O2
  • c) H2S2O3
  • d) H2S2O8

Answer:  H2S2O8

 

Question: In SHE, the pH of the acid solution should be

  • a) 7
  • b) 14
  • c) 0
  • d) 4

Answer: 0

 

Question: Which of the following can oxidise fluoride ions?

  • a) O3 
  • b) Cl2
  • c) Br2 
  • d) No chemical substance

Answer: No chemical substance

 

Question:  2.5 faraday of electricity is passes through a solution of CuSO4 . The number of gram eqivalents of copper deposited on the cathode will be

  • a) 1
  • b) 2
  • c) 2.5
  • d) 1.25

Answer: 2.5

 

Question: The coulombic charge on one mole electron is

  • a) 1.6 × 10–19 C
  • b) 96500 C
  • c) 6.02 × 10–23 C
  • d) 1.6 × 10–23 C

Answer: 96500 C

Chemistry in Everyday Life
NEET UG Chemistry in Everyday Life MCQs

MCQs for Electrochemistry Chemistry Full Syllabus

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