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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کاربان ڈیٹنگ کا استعمال ____ عمر کے تخمینہ کے لیے کیا جاتا ہے؟
Answer: Fossils
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.
ستارہ آخرکار زیادہ گھنا اور گرم ہو کر ہیلیم میں کس عمل کے ذریعے تبدیل ہوتا ہے؟
Answer: Nuclear fusion
Explanation Stars produce energy by combining lighter nuclei into heavier nuclei in their cores. In the core of a star, hydrogen nuclei fuse to form helium . This process releases a huge amount of energy in the form of light and heat. It is the primary source of a star’s energy and sustains its radiation for billions of years. Last verified on 17-03-2026
کھانے کا سلسلہ ہمیشہ ____ سے شروع ہوتا ہے؟
Answer: Producers
Explanation A food chain always begins with producers . It usually green plants or algae , that make their own food through photosynthesis . They provide the initial energy source for all other organisms ( consumers and decomposers ) in the food chain.
سوائے نظام تنفس کی عام بیماریاں درج ذیل ہیں؟
Answer: Hepatitis
Explanation Hepatitis is a disease of the liver , not the respiratory system. Top Common diseases of the respiratory system include: Asthma Chronic obstructive pulmonary disease (COPD) Pneumonia Influenza (flu) Tuberculosis (TB) Bronchitis Emphysema Lung cancer Cystic fibrosis Pulmonary fibrosis
لکڑی جلانا ایک ______ تبدیلی ہے۔
Answer: Chemical
Explanation Burning of wood is a chemical change , as it involves a chemical reaction between the wood and oxygen. Resulting in a change in chemical composition and the formation of new substances (ashes, carbon dioxide, water vapor, etc).
حرارت ____ سے وابستہ توانائی کی ایک شکل ہے؟
Answer: Molecular Motion
Explanation Heat is a form of energy associated with the motion of molecules in a substance. As molecules vibrate, rotate, and collide , they transfer energy from one another, resulting in the sensation of heat.
ڈیسیبل وہ اکائی ہے جسے پیمائش کرنے کے لیے استعمال کیا جا سکتا ہے:
Answer: Amplitude
Explanation Decibel (dB) is the unit used to measure sound intensity. Which is related to the amplitude of a sound wave. The amplitude of a sound wave determines the loudness of the sound One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio.
متواتر جدول میں، کالم کو ____ سمجھا جاتا ہے؟
Answer: Groups
Explanation In the periodic table, a columns is considered to be a groups (also known as a family or column ). Groups are the vertical columns of elements in the periodic table.
ولسن کی بیماری کی تشخیص اور علاج کے لیے کون سا آئسوٹوپ استعمال کیا جاتا ہے؟
Answer: Copper - 64
Explanation Copper-64 is used for the diagnosis and treatment of Wilson's disease. It helps in imaging and radiotherapy due to its radioactive properties. It allowing for the assessment of copper metabolism and liver function in affected patients.
کھانا عام طور پر _____ میں ہضم ہوتا ہے؟
Answer: Small Intestine
Explanation The majority of nutrient absorption in the digestive system occurs in the small intestine, Where the final stages of digestion take place. This organ's structure, featuring villi and microvilli, creates a large surface area optimized for absorbing digested nutrients and most water into the bloodstream.
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