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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انزائمز _____ ایکٹیویشن انرجی کے ذریعے کیمیائی رد عمل کو متحرک کرتے ہیں۔
Answer: Lowering
Explanation Enzymes lower the activation energy , allowing the reaction to proceed faster and more efficiently. This enables the reaction to occur with less energy input , making it more feasible and rapid.
مندرجہ ذیل میں سے کون سا غیر خلوی یا خلوی جاندار ہے؟
Answer: Virus
Explanation Viruses are considered non-cellular or acellular organisms because they do not have cellular structure or metabolism. They are composed of genetic material (DNA or RNA) surrounded by a protein coat and require a host cell to replicate and produce new viruses.
جڑوں کے بال پودے کے لیے سب سے اہم ہیں کیونکہ وہ ______؟
Answer: Increase the surface area for absorption
Explanation Root hairs are thin, hair-like structures that extend from the roots of plants, increasing the surface area for absorption of water and nutrients from the soil . They play a crucial role in: Absorbing water and minerals Anchoring the plant in the soil Facilitating the uptake of nutrients
مائیکروسکوپ کا ابتدائی نمونہ کس سائنسدان نے ایجاد کیا؟
Answer: F.Janssen and Z.Janssen
Explanation The first compound microscope is believed to have been invented around 1590 . It was developed by the Dutch spectacle makers Hans Janssen and his son Zacharias Janssen . Their invention used two lenses to magnify tiny objects . Additional information : Galileo Galilei – 1609 improved the microscope design Robert Hooke – 1665 observed cork cells and wrote Micrographia Antonie van Leeuwenhoek – 1674 discovered microorganisms Joseph Jackson Lister – 1830 improved modern compound microscope Last verified on 13-03-2026
کس مملکت کے ارکان میں خلیے کی دیوار ہوتی ہے اور سب ہیٹروٹروفک ہیں؟
Answer: Fungi
Explanation Fungi have cell walls made of chitin and are all heterotrophic, obtaining nutrients by decomposing organic matter or forming symbiotic relationships. This distinguishes them from other kingdoms , making Fungi unique in their combination of cell walls and heterotrophy.
آلہ کی صفر غلطی ______ ہے؟
Answer: Systematic error
Explanation Zero error is a type of systematic error that occurs when the instrument's zero point is not accurately calibrated, resulting in a consistent error in all measurements. Systematic errors are biases that affect the accuracy of a measurement, and zero error is a specific type of systematic error.
اگر سیل بند سلنڈر میں گیس کو گرم کیا جائے تو _______ بڑھ جاتا ہے۔
Answer: All of them
Explanation When a gas is heated in a sealed cylinder: The temperature of the gas increases (by definition of heating). The average kinetic energy of the particles increases (as the temperature rises, the molecules move faster). The pressure inside the container increases (as the molecules move faster and collide more frequently with the container walls ).
حیاتیاتی طریقہ کی صحیح ترتیب کو منتخب کریں؟
Answer: Hypothesis → Reasoning → Theory → Law
Explanation The correct sequence of biological method is : Hypothesis → Reasoning → Theory → Law This sequence represents the scientific method in biology, which involves: Formulating a hypothesis ( a educated guess ) to explain a phenomenon Using reasoning and logic to develop predictions and test the hypothesis Developing a theory (a well-substantiated explanation) based on the results of experiments and observations Establishing a law (a universal principle) that describes the phenomenon
ریڈیو لیبلنگ اور کاربن ڈیٹنگ بھی فوسلز کے ____ کا تعین کرنے میں تابکار آاسوٹوپس کے کچھ استعمال دکھاتی ہے۔
Answer: Age
Explanation Radioactive isotopes, such as carbon-14 and uranium-238, decay at a steady rate. It allowing scientists to measure the age of fossils and rocks. This technique is known as radiometric dating.
اگر مادّہ اصل جہتوں کو بحال کرتا ہے، جب کسی بیرونی قوت کو ہٹا دیا جاتا ہے، تو اس اخترتی کو ______ اخترتی کے نام سے جانا جاتا ہے۔
Answer: Elastic
Explanation Elastic deformation occurs when a material temporarily changes shape in response to an external force , but returns to its original dimensions when the force is removed. This type of deformation is reversible , meaning the material returns to its original state.
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