Inter objective 2023
12th chemistry objective Bihar Board Bihar Board 2023 Exam Important Question Inter exam Uncategorized

Inter chemistry solution most VVI objective question for 2023 exam || 12th chemistry most VVI objective question Chapter 3

InterClass 12th chemistry Chapter – 3 VVI objective For Bihar Board and all other board In English medium

Electro Chemistry

1. If an element solution is diluted to 9 times then its conductance
(A) Increases by 9 times
(B) Decreases by 9 times
(C) Remains constant
(D) None of these
Ans – A
2. Faraday’s second law at electrolysis is related to
(A) Atomic number of the cation
(B) Equivalent weight of the electrolyte
(C) Atomic number of nation
(D) Speed of cation
Ans – B
3. Which of the following is a secondary cell ?
(A) Leclanche cell
(B) Lead Storage battery
(C) Concentration cell
(D) All of these
Ans – B
4. in an experiment, 0.04 F was passed through 400 ml of 1 M solution of NaCl. What should be pH of the solution after electrolysis ?
(A) 8
(B) 10
(C) 13
(D) 6
Ans – C
5. what current is to be passed from 0.25 second for deposit of a certain weight of metal which is equal to its electrochemical equivalent ?
(A) 4 A
(B) 100 A
(C) 200 A
(D) 2 A
Ans – A
6. Faraday’s law of electrolysis is related to
(A) Atomic number of cation
(B) Atomic no. of an anion
(C) Equivalent weight of electrolyte
(D) Speed of cations
Ans – C

Inter chemistry solution most VVI objective question for 2023 exam

7. Of the following metals that can not be obtained by electrolysis of the aqueous solution of their slats are :
(A) Ag and Mg
(B) Ag and Al
(C) Mg and Al
(D) Cu and Cr
Ans – C
8. When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are :
Cathode. Anode
(A) Pure zinc Pure copper
(B) Impure zinc Pure copper
(C) Impure zinc Impure sample
(D) Pure Copper Impure sample
Ans – B
9. Which of the following is the use of electrolysis ?
(A) Electrorefining
(B) Sodium and oxygen
(C) Both A and B
(D) None of these
Ans – C
10. Electrolysis of molten NaCl leads to the formation of
(A) Sodium and hydrogen
(B) Sodium and oxygen
(C) Hydrogen and oxygen
(D) Sodium and chlorine
Ans – D
11. Which of the following statement is true for the electrochemical Danial cell ?
(A) Electrons flow from copper electrode + 0 zinc electrode
(B) Current flow from zinc electrode + 0 copper electrode
(C) Cation moves to word copper electrode
(D) Cation moves towards zinc electrode
Ans – C
12. In the electrolytic cell flow of electron is from
(A) Cathode to anode in solution
(B) Cathode to anode through external supply
(C) Cathode to anode through internal supply
(D) Anode to cathode through internal supply
Ans – C

Inter chemistry solution most VVI objective question for 2023 exam

13. the highest electrical conductivity of the following aqua solution is of :
(A) 0.1 M acetic acid
(B) 0.1 M chloroacetic acid
(C) 0.1 M fluoroacetic acid
(D) 0.1 M difluoroacetic acid
Ans – D
14. Which one of the following is not true ?
(A) Cathode is negative terminal in an electrolytic cell
(B) Cathode is negative terminal in a galvanic cell
(C) Reduction of cathode in either of cells
(D) Oxidation occurs at anode in either of cells
Ans – B
15. which of the following is not true for galvanic cell when written is an abbreviated form ?
(A) Left half electrode is a negative terminal
(B) left half electrode is an anode
(C) Electrons are given but in the external circuit from the anode
(D) Electrons are given but in the external circuit from the cathode
Ans – B
16. The cell emf depends on :
(A) Temperature
(B) The size of anode
(C) The size of cathode
(D) Volume of the electrolytic solution
Ans – A
17. Which of the following metals form a protective layer of oxide the prevent corrosion ?
(A) Cu
(B) Ag
(C) Au
(D) Al
Ans – D
18. hydrogen-oxygen fuel cell are used in spacecrafts to supply
(A) Oxygen
(B) Hydrogen
(C) Water
(D) Illumination
Ans – C

Inter chemistry solution most VVI objective question for 2023 exam

19. The amount of electricity required to deposit 1 mol of aluminium from a solution of AlCl3 will be :
(A) 0.33 F
(B) 1 F
(C) 3 F
(D) 1 ampere
Ans – C
20. Faraday’s second law at electrolysis is related to :
(A) Atomic number of the cation
(B) Equivalent weight of the electrolyte
(C) Atomic number of the anion
(D) Speed of cation
Ans – B

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