General Science Class 7 MCQs MCQs - General Science Practice | PakExamPoint

Practise General Science Class 7 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.

General Science Class 7 MCQs MCQs and revision practice

Study General Science Class 7 MCQs through multiple-choice questions in General Science. This subtopic contains 255 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 7 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 7 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.

231. Respiration involves _______?

سانس میں _______ شامل ہے؟

Check answer and explanation

Answer: Mechanical and Biochemical processes

Explanation Respiration involves two main processes: 1. Mechanical Process (Ventilation) : Breathing in (inhalation) Breathing out (exhalation) Movement of air in and out of the lungs 2. Biochemical Process (Respiratory Exchange) : Exchange of oxygen and carbon dioxide between the lungs and blood Transport of oxygen and carbon dioxide through the bloodstream Cellular respiration (cellular metabolism)

232. When light passes through prism _____ occurs to form spectrum.

جب روشنی پرزم سے گزرتی ہے تو _____ سپیکٹرم بنتا ہے۔

Check answer and explanation

Answer: Refraction

Explanation Refraction : Bending of light when it passes from one medium to another. A prism bends light at different angles depending on wavelength. This separation of colors is called dispersion , forming a spectrum. Visible spectrum colors : Red, Orange, Yellow, Green, Blue, Indigo, Violet ( ROYGBIV ). Last verified on 13-03-2026

233. The angle of incidence of a ray for which the angle of refraction is 90° is called ____?

کسی شعاع کے آپس کا زاویہ جس کے لیے اضطراب کا زاویہ °90 ہے ____ کہلاتا ہے؟

Check answer and explanation

Answer: Critical Angle

Explanation The critical angle is the angle of incidence at which the angle of refraction is 90°, and beyond which total internal reflection occurs. This concept is crucial in understanding optical phenomena like fiber optics and prisms.

234. The tubular outgrowth part of roots in plants have the function of _____ in the system.

پودوں میں جڑوں کے نلی نما حصے کا نظام میں _____ کا کام ہوتا ہے۔

Check answer and explanation

Answer: Absorb salts and gases

Explanation Root hairs are tiny tubular outgrowths of roots in plants. They increase the surface area of roots for efficient absorption. Their main function is to absorb water, mineral salts, and gases from the soil. They do not perform photosynthesis or reproduction. Last verified on 17-03-2026

235. The audible range of normal dog ear is ______?

عام کتے کے کان کی قابل سماعت حد ______ ہے؟

Check answer and explanation

Answer: 67 Hz to 45kHz

Explanation Dogs can hear sounds in the range of 67 Hz to 45,000 Hz , which is slightly higher than the human audible range.

236. The audible range of normal dolphin ear is ____?

نارمل ڈولفن کان کی قابل سماعت رینج ____ ہے؟

Check answer and explanation

Answer: 20 Hz to 120 kHz

Explanation Dolphins have a wide audible range that is adapted to their aquatic environment. They can hear sounds in the range of 20 Hz to 120,000 Hz , which is far beyond the human audible range.

237. The stomach is like a___bag.

پیٹ ایک ___ تھیلی کی طرح ہے۔

Check answer and explanation

Answer: J-shaped

Explanation The stomach is a J shaped sac about one foot in length that lies under the diaphragm on the left of the abdominal cavity. The stomach has three parts : The region where the stomach opens is known as the cardiac stomach. The main body is known as fundus . The posterior portion which opens to the intestine is known as the pyloric stomach.

238. An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of an atom is?

ایک عنصر کے ایٹم میں 11 پروٹون، 11 الیکٹران اور 12 نیوٹران ہوتے ہیں۔ ایک ایٹم کا جوہری ماس _____ ہے؟

Check answer and explanation

Answer: 23

Explanation The atomic mass (A) is the sum of protons and neutrons in the nucleus. In this case: Protons (Z) = 11 Neutrons (N) = 12 Atomic Mass (A) = Z + N = 11 + 12 = 23

239. The circuits in most businesses places and homes are connected in ____?

زیادہ تر کاروباری مقامات اور گھروں کے سرکٹس ____ میں جڑے ہوئے ہیں؟

Check answer and explanation

Answer: Parallel

Explanation In most businesses and homes , electrical circuits are connected in parallel to ensure that : Each device receives the same voltage If one device fails or is turned off, others remain operational The entire circuit doesn't fail if one device is disconnected

240. The type of reproduction in which two parents of different sexes are involved?

تولید کی وہ قسم جس میں مختلف جنسوں کے دو والدین ملوث ہوتے ہیں؟

Check answer and explanation

Answer: Sexual Reproduction

Explanation Sexual reproduction involves the fusion of gametes (sperm and egg cells) from two parents of different sexes. It resulting in offspring with a unique combination of genetic traits.

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