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Chemistry MCQs & Past Papers

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 with answers

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.

1.
Past Paper MCQ
Who discovered the neutron?
Correct Answer: B. James Chadwick
One-liner
The neutron was discovered by James Chadwick in 1932.
2.
Past Paper MCQ
The uncharged particle of an atom is ____?
Correct Answer: B. Neutron
One-liner
The uncharged particle of an atom is the neutron.
3.
Past Paper MCQ
Isotopes of an element have the same number of _______?
Correct Answer: B. Protons
One-liner
Isotopes of an element have the same number of protons but differ in the number of neutrons.
4.
Past Paper MCQ
Atomic number of hydrogen is:
Correct Answer: A. 1
One-liner
The atomic number of hydrogen is 1.
5.
Past Paper MCQ
Proton was discovered by _____?
Correct Answer: A. Ernest Rutherford
One-liner
The proton was discovered by Ernest Rutherford in 1919 through his gold foil alpha particle scattering experiment.
6.
Past Paper MCQ
Charge of an anion:
Correct Answer: B. Negative
One-liner
An anion carries a negative charge because it has gained one or more electrons.
7.
Past Paper MCQ
Neutron converts into proton with the emission of:
Correct Answer: A. Positron
One-liner
A neutron converts into a proton with the emission of a positron (beta-plus decay).
8.
Past Paper MCQ
Which sub-atomic particle has the least mass?
Correct Answer: C. Electron
One-liner
The sub-atomic particle with the least mass is the electron.
9.
Past Paper MCQ
What is the mass of one proton?
Correct Answer: A. Equal to 1836 electrons
One-liner
The mass of one proton is equal to 1836 electrons.
10.
Past Paper MCQ
What do isotopes of an element have in common?
Correct Answer: A. Number of protons
One-liner
Isotopes of an element have the same number of protons but differ in the number of neutrons.

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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

Chemistry MCQs with answers

Chemistry MCQs — common questions

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