The volume of an atom is calculated by using _____?

A. Atomic radius and formula for volume of a sphere

B. Atomic mass and density formula

C. Atomic number and Avogadro's number

D. Nuclear radius and formula for volume of a cylinder

Everyday Science · page 2 of 3

Chemistry MCQs & Past Papers – Sample 2

Chemistry MCQs in this portion are names and formulas from daily life — washing soda, baking soda, acids in food, rusting — not organic mechanisms.

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Chemistry MCQs (11–20)

10 questions on this page, with a one-liner under each answer. Hide answers to attempt; questions you already answered stay revealed. This is a sample of 30 Chemistry MCQs. The full Everyday Science bank is on the chapter pages, 10 questions at a time.

Answers and one-liners are hidden. Tap an option to check that question, or show all. Questions from previously asked papers carry a Past Paper MCQ badge.

11.
Past Paper MCQ
Hydrogen has ____ Neutrons?
Correct Answer: A. Zero
One-liner
Hydrogen has zero neutrons in its most common isotope (protium).
12.
Past Paper MCQ
The volume of an atom is calculated by using _____?
Correct Answer: A. Atomic radius and formula for volume of a sphere
One-liner
The volume of an atom is calculated using its atomic radius and the formula for the volume of a sphere (V = 4/3 πr³).
13.
Past Paper MCQ
The electron was first identified by?
Correct Answer: A. J. J. Thomson
One-liner
The electron was first identified by J. J. Thomson in 1897 through his cathode ray tube experiments.
14.
Past Paper MCQ
How many neutrons are present in a hydrogen atom?
Correct Answer: A. 0
One-liner
A normal hydrogen atom (protium) has 0 neutrons in its nucleus.
15.
Past Paper MCQ
Which of the following is a neutral particle?
Correct Answer: C. Neutron
One-liner
The neutron is a subatomic particle that carries no electric charge, making it electrically neutral.
16.
Past Paper MCQ
What is the name of the uncharged particle found in an atom?
Correct Answer: B. Neutron
One-liner
The uncharged particle found in an atom is the neutron.
17.
Past Paper MCQ
A substance which produces hydrogen ion (H+) in the aqueous solution is called?
Correct Answer: A. Acid
One-liner
A substance that produces hydrogen ions (H⁺) in aqueous solution is called an acid.
18.
Past Paper MCQ
What is water commonly known as due to its ability to dissolve many substances?
Correct Answer: A. Universal solvent
One-liner
Water is commonly known as the universal solvent due to its ability to dissolve a wide variety of substances.
19.
Past Paper MCQ
In a solution, when water is used as a solvent, that solution is called?
Correct Answer: A. Aqueous Solution
One-liner
A solution in which water acts as the solvent is called an Aqueous Solution.
20.
Past Paper MCQ
Anion is a __________ charge?
Correct Answer: B. Negative
One-liner
An anion is a negative charge, formed when an atom gains one or more electrons.

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Chemistry MCQs — common questions

Are these Chemistry MCQs with answers?

Yes. Each question on this page can be attempted here, with the correct option and a one-liner. This URL is a sample of 30 Chemistry MCQs across 3 pages. The rest of the Everyday Science questions are on the chapter pages, 10 MCQs per page.

Are Chemistry MCQs asked in FPSC, PPSC, NTS and all One Paper Exams?

Yes. Chemistry is part of the Everyday Science portion of most Pakistani one-paper job tests. Weighting still depends on the advertisement — use the official syllabus for your post.

Are these past paper Chemistry MCQs?

Where a question came from a previously asked paper, it carries a Past Paper MCQ badge. The rest are general practice from the same topic. The study app lets you drill past papers on their own.

How should I practise Chemistry MCQs?

Hide answers and attempt the samples on this page first. Then open Everyday Science in the study app and drill this area until your correction rate rises. Mix a full paper only after the topic is stable.

Chemistry MCQs & Past Papers – Sample 2

Chemistry MCQs (11–20)

Chemistry MCQs — common questions

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