General Science Class 4 MCQs MCQs - General Science Practice | PakExamPoint
Practise General Science Class 4 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
General Science Class 4 MCQs MCQs and revision practice
Study General Science Class 4 MCQs through multiple-choice questions in General Science. This subtopic contains 296 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 4 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.
لیور، پللی، ویج، وہیل، مائل طیارہ اور سکرو کس کی مثالیں ہیں؟
A. Simple Machine
B. Both A and B
C. Compound Machine
D. None
Check answer and explanation
Answer: Simple Machine
Explanation Lever, pulley, wedge, wheel, inclined plane, and screw are examples of simple machines. These are basic machines that change the direction or magnitude of a force, making it easier to lift, move, or apply force to an object. There are six types of simple machines : Inclined Plane Lever Wheel and Axle Pulley Wedge Screw
اس کے نتیجے میں اعلی درجہ حرارت والے علاقے سے کم درجہ حرارت والے علاقے میں توانائی کا یہ بہاؤ کیا ہے؟
A. The temperature remains the same
B. The warmer materials become warmer and the cooler materials become cooler
C. The warmer materials cool down and cooler materials warm up
D. The energy is lost forever
Check answer and explanation
Answer: The warmer materials cool down and cooler materials warm up
Explanation As a result of the flow of energy (heat) from a region of high temperature to a region of low temperature: the warmer materials cool down and cooler materials warm up. This flow of energy is known as heat transfer. It occurs through conduction , convection, and radiation. As a result, the warmer materials lose energy and cool down, while the cooler materials gain energy and warm up.
Explanation The stomach mixes food with digestive enzymes and acids. It churning and blending it into a liquid mixture called chyme. Much like a mixer combines ingredients together.
مندرجہ ذیل میں سے کون سا پانی پر تیرتا ہے جس سے چورا اور پانی کا مرکب بنتا ہے؟
A. Liquid
B. Gas
C. None
D. Solid
Check answer and explanation
Answer: Solid
Explanation Solids like sawdust float on water because they are less dense than water. When sawdust is added to water, it forms a heterogeneous mixture. Where the sawdust particles remain separate from the water and float on the surface.
کیا ہمیں دودھ، گوشت، انڈے اور دالیں فراہم _____ کرتے ہیں؟
A. Mineral
B. Carbohydrate
C. Protein
D. Vitamin
Check answer and explanation
Answer: Protein
Explanation Milk, meat, eggs, and pulses are all rich sources of Protein, which is essential for: Building and repairing tissues Producing enzymes and hormones Maintaining healthy muscles, bones, and organs
Explanation A solution is a type of mixture that is homogeneous , meaning it has a uniform composition and properties throughout. It is a mixture of two or more substances, where one substance (the solute) is dissolved in another substance (the solvent).
D. Imbalances in fluid volume in the vessels and tissues
Check answer and explanation
Answer: Imbalances in fluid volume in the vessels and tissues
Explanation Sodium deficiency , also known as hyponatremia , can lead to: Imbalances in fluid volume in the vessels and tissues Fluid retention and swelling Muscle cramps Weakness Fatigue Seizures (in severe cases)
کس سائنسدان نے ثابت کیا کہ توانائی کی مختلف شکلیں مکینیکل، برقی اور حرارت بنیادی طور پر ایک جیسی ہیں اور انہیں ایک شکل سے دوسری شکل میں تبدیل کیا جا سکتا ہے؟
A. John Dalton
B. William Thomson
C. Albert Einstein
D. James Prescott Joule
Check answer and explanation
Answer: James Prescott Joule
Explanation James Prescott Joule established that the various forms of energy, mechanical, electrical and heat, are basically the same and can be changed from one form into another. He demonstrated that different forms of energy are interchangeable in his most famous experiment, published in 1845, using a paddle wheel to show that mechanical energy could be changed into thermal energy.
وہ جاندار جو پیدا کرنے والوں اور صارفین کے تمام مردہ اور فضلہ کھا جاتے ہیں انہیں کیا کہا جاتا ہے؟
A. None
B. Producers
C. Decomposers
D. Consumers
Check answer and explanation
Answer: Decomposers
Explanation Decomposers are organisms that break down dead and waste products of producers and consumers, releasing nutrients back into the environment . Examples of decomposers include bacteria, fungi, and detritivores like earthworms and insects.
Explanation Noise intensity is measured in decibels (dB). It indicates the loudness of sound . It helps assess noise pollution in cities, industries, and traffic areas . Noise pollution affects hearing, stress levels, and sleep . Reducing exposure above 85 dB is important for health protection . Last verified on 19-03-2026
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