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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کسی مبہم یا غیر چمکدار چیز کا رنگ روشنی کا رنگ ہے _______؟
Answer: Reflects
Explanation The color of an opaque or non-luminous object is the color of light it reflects . When light hits the object , some wavelengths are absorbed, and the remaining wavelengths are reflected , which is what we perceive as the object's color.
جب روشنی ایک شفاف میڈیم سے دوسرے میں داخل ہوتے وقت سمت میں بدل جاتی ہے تو کیا کہا جاتا ہے؟
Answer: Refraction
Explanation Refraction is the change in the direction of light when it passes from one medium to another. It is one of the most commonly observed natural phenomena of light. Optical prisms and lenses involve refraction to redirect light, and so does the eyes of living beings.
نطفہ انڈوں کے ساتھ مل کر ______ بنتا ہے؟
Answer: Zygote
Explanation Sperms fuse with eggs to form a zygote , which is the single cell that results from fertilization. The zygote then develops into an embryo , and later a fetus, as it grows and matures.
تھرموس فلاسک ____ کو کم کرکے چیزوں کو ان کے اصل درجہ حرارت کے قریب رکھتا ہے؟
Answer: All of these
Explanation A thermos flask is designed to reduce heat transfer through all three methods: Conduction : The flask has a vacuum insulation, which eliminates conduction through the container. Convection : The flask's design and vacuum insulation prevent convective heat transfer. Radiation : The flask's reflective coating minimizes radiant heat transfer.
چیک کرنے کے لیے اسفیگمومانومیٹر استعمال کیا جاتا ہے؟ ______
Answer: Blood pressure
Explanation We can measure our blood pressure on our own using a digital blood pressure monitor for automated readings or an instrument called a sphygmomanometer for manual readings. A sphygmomanometer also known as a blood pressure monitor , is a device used to measure blood pressure.
ایک ایٹم نیوٹرل ہوتا ہے لیکن جب کوئی ایٹم یا مالیکیول جو الیکٹران کے فائدہ یا نقصان کی وجہ سے خالص برقی لے جاتا ہے اسے _____ کہتے ہیں؟
Answer: Ion
Explanation When an atom gains or loses electrons , it becomes an ion. If it gains electrons, it becomes a negative ion (anion). It it loses electrons, it becomes a positive ion (cation).
انسانی نظام انہضام میں چربی کو چھوٹے چھوٹے ٹکڑوں میں تحلیل کرنے والے کے طور پر کام کرتا ہے۔ ____
Answer: Bile
Explanation Bile , produced by the liver and stored in the gallbladder . It breaks down fats into smaller particles , making it easier for enzymes to digest them . This process is called emulsification . Last verified on 17-03-2026
آواز درج ذیل میں سے کس میں سب سے سست سفر کرتی ہے؟
Answer: Air
Explanation Sound travels slowest in air , with a speed of approximately 343 meters per second (m/s) at 20°C. This is because air is a gas and has a low density and stiffness , which allows sound waves to propagate more slowly through the material. The speeds of sound in different materials: Air: 343 m/s Water: 1433 m/s Wood: 3300-3600 m/s Brick: 4176 m/s Steel: 6100 m/s Diamond: 12000 m/s
کاربن ڈیٹنگ _____ کے لئے استعمال کی جاتی ہے؟
Answer: Finding the age
Explanation Carbon dating is used to estimate the age of fossils. Those that are less than 60,000 years old. It is composed of organic materials like wood or leather.
روشنی کے بنیادی رنگ _____ ہیں؟
Answer: 3
Explanation Red (R) Green (G) and blue (B) colors are known as primary colors of light. Because of mixing these three colors we are able to make all possible colors. Key Point The primary colors of Pigment is : Red Yellow Blue
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