General Science — MCQ Practice Questions & Answers

Question 1

Which of the following elements has the highest electronegativity value on the Pauling scale?

Accepted Answer

Correct answer: A. Fluorine — Fluorine has the highest electronegativity value of 3.98 on the Pauling scale, making it the most electronegative element. This is because it has the smallest atomic radius and the highest effective nuclear charge among all elements, causing it to attract electrons most strongly in a chemical bond.

Answer

B. Oxygen

Answer

C. Chlorine

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D. Nitrogen

Question 2

Chemical formula of water?

Accepted Answer

Correct answer: B. H2O — Water = H₂O.

Answer

A. HO

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C. H2O2

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D. HO2

Question 3

Atomic number of Carbon?

Accepted Answer

Correct answer: A. 6 — Carbon atomic number = 6.

Answer

B. 8

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C. 12

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D. 14

Question 4

Liquid to gas process?

Accepted Answer

Correct answer: C. Evaporation — Evaporation = liquid to gas.

Answer

A. Condensation

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B. Precipitation

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D. Sublimation

Question 5

Hardest natural substance?

Accepted Answer

Correct answer: C. Diamond — Diamond = 10 on Mohs scale.

Answer

A. Gold

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B. Iron

Answer

D. Quartz

General Science - MCQ Practice Questions