Practicing Success

Register
Start Free Mocks
CUETMOCK

Ace Your

CUET Preparation Today

Start Free Mocks
Home Questions RCYAKJZY9U
Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Electro Chemistry

Question:

Match Column I with Column II

Column I

Column II

(i) Lechlanche cell

(a) cell \(2 H_2 + O_2 \rightarrow 2H_2O\)

(ii) Ni- Cd cell

(b) does not involve any ion in solution and is used in hearing aids

(iii) Fuell cell

(c) rechargeable

(iv) Mercury cell

(d) reaction at anode,\(Zn \rightarrow Zn^{2+} + 2e^-\)
Options:

i-d, ii-c, iii-a, iv-b

i-a, ii-c, iii-d, iv-b

i-b, ii-c, iii-a, iv-d

i-a, ii-b, iii-c, iv-d

Correct Answer:

i-d, ii-c, iii-a, iv-b

Explanation:

The correct answer is option 1. i-d, ii-c, iii-a, iv-b

Column I

Column II

(i) Lechlanche cell

(d) reaction at anode,\(Zn \rightarrow Zn^{2+} + 2e^-\)

(ii) Ni- Cd cell

(c) rechargeable

(iii) Fuell cell

(a) cell \(2 H_2 + O_2 \rightarrow 2H_2O\)

(iv) Mercury cell

(b) does not involve any ion in solution and is used in hearing aids

(i) Leclanché cell: In a Leclanché cell, the anode reaction involves the oxidation of zinc metal to form zinc ions (\(Zn^{2+}\)) and two electrons (\(2e^-\)).

(ii) Ni-Cd cell: The Ni-Cd (Nickel-Cadmium) cell is a rechargeable battery and is known for its ability to be charged and discharged multiple times.

(iii) Fuel cell: In a fuel cell, hydrogen (\(H_2\)) and oxygen (\(O_2\)) react to form water (\(H_2O\)) through an electrochemical process that produces electricity.

(iv) Mercury cell: A mercury cell does not involve any ions in the solution. It uses a reaction between amalgams (e.g., zinc amalgam) and mercury oxide to generate electricity and is used in devices like hearing aids.

CUET Questions