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Chemistry MCQs

Practice Chemistry multiple-choice questions for University of Management and Technology competitive exams. Each question includes the correct answer and a short explanation, and past-paper questions are marked so you can revise both repeated and fresh material in one place.

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الشرحA pH of 7 indicates that the concentration of hydrogen ions equals the concentration of hydroxide ions, resulting in a neutral solution.

Proton

Neutron

Electron

Positron

الشرحElectrons are negatively charged subatomic particles that orbit the nucleus of an atom.

Covalent bond

Ionic bond

Hydrogen bond

Metallic bond

الشرحAn ionic bond occurs when one atom gains electrons and another loses them, creating electrostatic attraction.

17 g/mol

18 g/mol

20 g/mol

32 g/mol

الشرحWater has two Hydrogen atoms (2x1) and one Oxygen atom (16), totaling 18 g/mol.

Hydroxide ion (OH-)

Sodium ion (Na+)

Hydrogen ion (H+)

Chloride ion (Cl-)

الشرحArrhenius acids dissociate in water to produce hydrogen ions (H+).

الشرحThe atomic number is defined strictly by the number of protons in the nucleus.

Charles's Law

Boyle's Law

Avogadro's Law

Ideal Gas Law

الشرحBoyle's Law describes the inverse relationship between pressure and volume for a gas.

Group 1

Group 2

Group 17

Group 18

الشرحGroup 18 elements are inert noble gases with full valence electron shells.

sp2

sp3

dsp2

الشرحIn methane, the carbon atom forms four single bonds, resulting in sp3 hybridization with tetrahedral geometry.

Loss of electrons

Gain of electrons

Gain of protons

Loss of oxygen

الشرحBy definition, reduction is the gain of electrons (RIG - Reduction Is Gain).

Glucose

Acetic acid

Sodium chloride

Ethanol

الشرحSodium chloride (NaCl) dissociates completely into ions in water, making it a strong electrolyte.

Frequently Asked Questions

Are these Chemistry MCQs free?

Yes. Every Chemistry MCQ on this page is free to practice, including the correct answer and explanation.

Do these include past-paper questions?

Yes — questions sourced from past papers are clearly marked with a "Past Paper" badge, alongside fresh practice questions.

Which exams do these Chemistry MCQs help with?

They are aimed at University of Management and Technology and related Pakistani competitive exams that test Chemistry.

How should I practice subject-wise MCQs?

Attempt each question first, then reveal the answer and read the explanation. Short, focused sessions on one subject work better than long unstructured reading.