General Science Class 9 MCQs MCQs - General Science Practice | PakExamPoint

Practise General Science Class 9 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.

General Science Class 9 MCQs MCQs and revision practice

Study General Science Class 9 MCQs through multiple-choice questions in General Science. This subtopic contains 366 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

Use these General Science Class 9 MCQs MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.

Continue your revision with related topics: Biology Class 10th MCQs MCQs, Biology Class 9th MCQs MCQs, Chemistry Class 10th MCQs MCQs, Chemistry Class 9th MCQs MCQs, General Science Class 10 MCQs MCQs, General Science Class 4 MCQs MCQs, General Science Class 5 MCQs MCQs, General Science Class 6 MCQs MCQs.

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General Science Class 9 MCQs: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

1. In constructive reaction _____ molecules are formed.

تعمیری ردعمل میں _____ مالیکیول بنتے ہیں۔

Check answer and explanation

Answer: Large

Explanation In a constructive reaction , also known as a synthesis reaction , large molecules are formed from smaller ones. This type of reaction involves the combination of two or more molecules to form a larger molecule, often with the release of energy.

2. Which of these are involved in the clotting of blood?

ان میں سے کون سے خون جمنے میں ملوث ہیں؟

Check answer and explanation

Answer: Platelets

Explanation Platelets, also called thrombocytes. They are blood cells that play a vital role in blood clotting. When a blood vessel is injured , platelets aggregate to form a plug that stops the bleeding. Last verified on 02-04-2026

3. In dry cell ____ is used as cathode.

ڈینیل سیل میں ____ کیتھوڈ کے طور پر استعمال ہوتا ہے۔

Check answer and explanation

Answer: Cu

Explanation In a dry cell , Carbon rod (often with Cu connection) acts as the cathode . While Zinc container serves as the anode . The cathode collects electrons during the electrochemical reaction, completing the circuit.

4. Human plasma proteins include which of the following?

انسانی پلازما پروٹین میں درج ذیل میں سے کون سا شامل ہے؟

Check answer and explanation

Answer: Both A and C

Explanation Human plasma proteins consist of: Fibrinogen (A): involved in blood clotting Albumin (C): helps regulate blood volume and transport various molecules

5. Each mole of glucose produce maximum energy i.e ______?

گلوکوز کا ہر تل زیادہ سے زیادہ توانائی پیدا کرتا ہے یعنی ______؟

Check answer and explanation

Answer: 2827 Kj

Explanation One mole of glucose (180g) produces a maximum of 2827 kJ (kilojoules) of energy through cellular respiration. This energy is released as ATP (adenosine triphosphate) and is used to power various cellular activities.

6. Interaction between highly electron deficient hydrogen and highly electronegative atom is called?

انتہائی الیکٹران کی کمی والے ہائیڈروجن اور انتہائی برقی منفی ایٹم کے درمیان تعامل کو _____ کہتے ہیں؟

Check answer and explanation

Answer: Hydrogen bond

Explanation A hydrogen bond is a type of intermolecular force that arises between a highly electronegative atom ( such as oxygen, nitrogen, or fluorine ). A hydrogen atom that is bonded to a highly electronegative atom. This interaction is typically weak compared to covalent bonds. But it is strong enough to influence the physical and chemical properties of molecules.

7. Equation stating that two ratios are equal _____?

مساوات یہ بتاتی ہے کہ دو تناسب برابر ہیں _____؟

Check answer and explanation

Answer: Proportion

Explanation A proportion is an equation that states that two ratios are equal. It is often written in the form : a/b = c/d Where a, b, c, and d are values or quantities , and the ratio a/b is equal to the ratio c/d. For example : 2/4 = 3/6

8. Electron pairs which are not shared by atoms are called?

الیکٹران کے جوڑے جو ایٹموں میں مشترک نہیں ہوتے وہ _____ کہلاتے ہیں؟

Check answer and explanation

Answer: Lone pairs

Explanation Lone pairs are electron pairs that are not shared by atoms in a covalent bond. They are pairs of electrons that are localized on a single atom and are not involved in bonding. Lone pairs are also known as non-bonding pairs or free pairs.

9. Law of conservation of momentum defines that the total momentum of a system of two bodies before and after collision ______?

رفتار کے تحفظ کا قانون اس بات کی وضاحت کرتا ہے کہ تصادم سے پہلے اور بعد میں دو اجسام کے نظام کی کل رفتار ______؟

Check answer and explanation

Answer: Remains constant

Explanation The law of conservation of momentum states that the total momentum of a closed system (such as a system of two bodies) remains constant over time, as long as there are no external forces acting on the system. This means that the total momentum before a collision is equal to the total momentum after the collision.

10. Photosynthesis is the only process which produces free O2 by splitting _____?

فوٹو سنتھیسس واحد عمل ہے جو _____ کو تقسیم کرکے مفت آکسیجن پیدا کرتا ہے؟

Check answer and explanation

Answer: Water

Explanation Photosynthesis splits water molecules (H2O) into oxygen (O2) and hydrogen ions (H+), releasing oxygen as a byproduct. This process is essential for life on Earth , as it provides the oxygen that supports aerobic respiration in most living organisms.

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