Faraday's constant represents: MCQ with Answer and Explanation

Faraday's constant represents:
A. Charge on one electron
B. Avogadro's number
C. Mass of one electron
D. Charge on one mole of electrons
Answer: Option D
Solution (By JKSSB Mock Tests)
Faraday constant (F) = 96485 C/mol, approximately 96500 C/mol. It is the magnitude of electric charge per mole of electrons. Charge on one electron = 1.602 × 10⁻¹⁹ C, multiplied by Avogadro's number gives F. Used in electrolysis calculations: mass deposited = (Q × M)/(n × F).

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More chemistry Questions

Question #1
The half-life of a radioactive element is 10 days. After 40 days, the fraction remaining is:
A. 1/4
B. 1/2
C. 1/8
D. 1/16

Correct Answer: Option D


Explanation:
Number of half-lives = 40/10 = 4. Remaining fraction = (1/2)⁴ = 1/16. So after 4 half-lives, 1/16 of original amount remains.

This question belongs to: Science chemistry
Question #2
CFCs destroy ozone. Which atom is responsible?
A. Fluorine
B. Oxygen
C. Chlorine
D. Carbon

Correct Answer: Option C


Explanation:
UV radiation releases chlorine atoms from CFCs; Cl catalytically decomposes O₃: Cl + O₃ → ClO + O₂; ClO + O → Cl + O₂. One Cl atom can destroy thousands of ozone molecules.

This question belongs to: Science chemistry
Question #3
Detergents are better than soaps because they:
A. Work well in hard water
B. Are natural products
C. Have no environmental impact
D. Are cheaper

Correct Answer: Option A


Explanation:
Synthetic detergents (like alkyl sulfates or sulfonates) form soluble calcium and magnesium salts, so they lather well even in hard water. Soaps form scum. Detergents are usually derived from petrochemicals, can be non-biodegradable if branched, and may cause pollution.

This question belongs to: Science chemistry