Practise General Science Class 7 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
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.
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سب سے زیادہ گرم ستارے کس رنگ میں نظر آتے ہیں؟
Answer: Blue
Explanation The hottest stars appear blue in color. Blue stars are very hot, with surface temperatures reaching tens of thousands of degrees Celsius. It emitting predominantly blue and ultraviolet light.
حرارت کی منتقلی کا ایک طریقہ جو سیال کی بڑے پیمانے پر حرکت سے ہوتا ہے ___ کہلاتا ہے؟
Answer: Convection
Explanation Convection is the mode of heat transfer that occurs when a fluid (such as a gas or liquid) moves and carries heat energy from one location to another. This transfer of heat occurs due to the bulk motion of the fluid.
رات کے وقت، زمین کے اوپر کی ہوا اپنی کثافت کو گرم کر دیتی ہے ____؟
Answer: Increase
Explanation During nighttime, the air above the land loses heat and cools down , causing its density to increase. This is because cool air contracts and becomes denser than warm air.
منہ میں تھوک ____ کی کیمیائی عمل انہضام شروع کرتا ہے؟
Answer: Carbohydrates
Explanation In the mouth , saliva contains the enzyme amylase. It starts the chemical digestion of carbohydrates (such as starches and sugars). By breaking them down into simpler sugars like maltose and dextrin.
جب آواز کی لہر ایک جگہ سے دوسری جگہ جاتی ہے تو کیا منتقل کیا جاتا ہے؟
Answer: Energy
Explanation Sound waves are mechanical waves that require a medium (air, water, or solid) to travel. They transport energy , not matter. Particles of the medium vibrate around their mean position but do not move along with the wave. Examples : Speaking, music, and alarms transfer energy through sound waves. Last verified on 13-03-2026
ایک خلائی علاقہ جہاں مادہ اپنے اوپر خود کو دبا لیتا ہے، اسے کیا کہا جاتا ہے؟
Answer: Black Hole
Explanation A black hole is a region of space where matter has collapsed in on itself. It creating an incredibly dense and gravitational field so strong that not even light can escape. Black holes are detected via gravitational effects on nearby stars or X-ray emissions. Famous example : Sagittarius A* at the center of the Milky Way. Last verified on 19-03-2026
دو بلب ایک سیریز سرکٹ میں جڑے ہوئے ہیں۔ ایک بلب اڑتا ہے، دوسرے بلب کا کیا ہوگا؟
Answer: Also blow (blast)
Explanation When two bulbs are connected in a series circuit and one bulb blows, the entire circuit is interrupted, and the other bulb will also stop glowing , i.e., also blow (blast). This is because there is no longer a complete path for current to flow through the circuit.
عنصر کی علامت کے نیچے دکھائے گئے نمبر کو _____ کہتے ہیں؟
Answer: Atomic Mass
Explanation The number shown below the symbol of an element on the periodic table is called the Atomic Mass (or Average Atomic Mass). It represents the average mass of the element's isotop es, usually featuring decimal places. Additional information Atomic Number (usually above symbol): The number of protons. Mass Number (not typically on the table): Total protons + neutrons.
عکاسی کرنے والے پرزم عام طور پر کل ____ کے اصول پر کام کرتے ہیں؟
Answer: Internal Reflection
Explanation Reflecting prisms work on the principle of total internal reflection , where light is completely reflected back into the prism material rather than passing through the interface.
جدید متواتر جدول میں، کتنے ادوار ہوتے ہیں؟
Answer: 7
Explanation In the modern periodic table, there are 7 periods (horizontal rows) and 18 groups (vertical columns).
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