Practise General Science Class 9 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
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.
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زمین کے مختلف خطوں میں انواع کے اندر یا ان کے درمیان فرق کی ڈگری جسے _____ کہتے ہیں؟
Answer: Biodiversity
Explanation Biodiversity refers to the degree of variation within or among species. Including genetic, species, and ecosystem diversity, across different regions of the Earth.
لمبائی، کمیت، برقی رو، وقت، روشنی کی شدت اور مادے کی مقدار _____ کی مثالیں ہیں؟
Answer: Base quantities
Explanation These six quantities ( length, mass, electric current , time, intensity of light, and amount of substance) are the fundamental base quantities in the International System of Units (SI). They are the basic building blocks of the SI system and are used to define all other quantities.
درجہ بندی کی سائنس ____ کہلاتی ہے؟
Answer: Taxonomy
Explanation Taxonomy is the science of classifying and naming organisms. Helps organize plants, animals, and microorganisms into groups. Based on shared characteristics, genetics, and evolutionary relationships. Developed initially by Carl Linnaeus in the 18th century. Last verified on 06-02-2026
طبی آلات کی جراثیم کشی کے لیے کون سی شعاعیں استعمال ہوتی ہیں؟
Answer: γ-rays
Explanation Gamma rays are commonly used for sterilization of medical instruments. Because of their high energy and penetrating power , which allows them to effectively kill bacteria and other microorganisms. Gamma radiation is also used to sterilize medical supplies. Such as syringes, gloves, and implantable devices.
ایک جسم معمولی جھکاؤ کے بعد غیر مستحکم توازن میں ہے اگر اس کا مرکز ثقل ______ ہے؟
Answer: Remains above the point of contact
Explanation When a body is in unstable equilibrium , a slight tilt will cause its center of gravity (CG) to remain above the point of contact , making it prone to toppling over or falling. This means that the CG is not directly over the point of support, but is still above it , creating a moment that tends to rotate the body further. Key Points : A body is in stable equilibrium after slight tilt if its center of gravity remains above the point of contact. A body is in neutral equilibrium when its center of gravity remains at same height.
ایک ریسنگ کار کی استحکام میں _______ سے اضافہ ہوتا ہے؟
Answer: Lowering its centre of gravity
Explanation The stability of a racing car is increased by lowering its center of gravity , which reduces the risk of rollover or loss of control. This can be achieved through design elements like a lower ride height, a wider stance, or a lower seating position for the driver.
ہیڈ ٹو ٹیل رول کو ______ فورسز کو شامل کرنے کے لیے استعمال کیا جا سکتا ہے۔
Answer: Any number of
Explanation The head-to-tail rule is a method for adding vectors , such as forces, by lining up the head of one vector with the tail of the next vector. This rule can be used to add any number of forces, not just two or three.
حیاتیاتی تنوع ______ سے متاثر ہوتا ہے؟
Answer: All of these
Explanation Biodiversity is impacted by various human activities, including : Pollution : Chemical pollutants can alter ecosystems , affecting species development, growth, and survival. Deforestation : Habitat destruction and fragmentation lead to population decline , isolation, and extinction. Overhunting : Overexploitation of species for food, trophies , or other purposes can deplete populations and drive extinctions.
ایک جانور جو بہت فاصلے پر منتقل ہوتا ہے اپنی توانائی کو ____ کے طور پر ذخیرہ کرنے سے سب سے زیادہ فائدہ حاصل کرے گا؟
Answer: Fats
Explanation Animals that migrate long distances need a compact and energy-dense source of fuel to sustain them during their journey. Fat is the most energy-dense nutrient , providing approximately 9 kcal/g, compared to carbohydrates (4 kcal/g) and protein (4 kcal/g).
انزائم کی سرگرمی کو متاثر کرنے والے تمام عوامل ہیں سوائے؟
Answer: Organic solvent
Explanation Organic solvents are not a typical factor that affects enzyme activity. In fact, many enzymes are denatured or inactivated in the presence of organic solvents. As they can disrupt the enzyme's native structure and function.
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