FPSC ALL PAST PAPERS 2025 EVERYDAY SCIENCE MCQS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
رفتار کے وقت کے گراف کے تحت علاقہ ______ دیتا ہے؟
- Displacement
- Speed
- Acceleration
- None of these
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Explanation
- A velocity–time graph shows how velocity changes with time.
- The slope gives acceleration.
- The area under the graph represents motion covered.
- It connects velocity with displacement.
Last verified on 22-05-2026
جی پی ایس کا مخفف کیا ہے؟
- Google Positioning System
- Global Positioning System
- Global Positioning Station
- None of these
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Explanation
- GPS is an abbreviation of the Global Positioning System.
- It is a satellite-based radio navigation system.
- Owned by the United States government.
- First launch: February 22, 1978
Last verified on 05-09-2026
- Graham Bell
- Thomas Edison
- Marconi
- Wright Brothers
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Explanation
- Marconi invented Radio.
- Radio was invented in 1895.
- Guglielmo Marconi was an Italian inventor.
Last verified on 12-08-2026
ٹیلی فون کو کس نے ایجاد کیا؟
- Thomas Edison
- Nikola Tesla
- Alexander Graham Bell
- None of these
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Explanation
- Alexander Graham Bell is credited as the inventor of the telephone.
- He was awarded the first successful patent for it.
- The telephone was invented in 1876.
- Bell made the first-ever telephone call to his assistant Thomas Watson.
Last verified on 31-03-2026
- Newton’s First Law
- Newton’s Second Law
- Newton’s Third Law
- Law of Gravitation
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Explanation
- Newton's Second Law of motion explains the relationship between force, mass, and acceleration
- Through the equation F = ma, which states that the acceleration of an object
- It is directly proportional to the net force acting on it and inversely proportional to its mass.
- This means a greater force produces greater acceleration,
- While a greater mass results in less acceleration for the same force.
Last verified on 22-05-2026
کون سی شعاعیں نیوکلیئس سے خارج ہونے والے تیز رفتار الیکٹرانز پر مشتمل ہوتی ہیں؟
- Gamma rays
- Beta rays
- Alpha rays
- None of these
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Explanation
- Beta radiation consists of high-speed electrons emitted from the nucleus.
- These are produced during beta decay of unstable atoms.
- They are more penetrating than alpha but less than gamma radiation.
- Beta radiation can be stopped by thin metal sheets (like aluminum).
Last verified on 06-05-2026
اگر ایک خالص سیمی کنڈکٹر کو فاسفورس (گروپ وی عنصر) سے ڈوپ کیا جائے تو وہ کیا بنے گا؟
- P-type semiconductor
- N-type semiconductor
- Insulator
- None of these
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Explanation
- Intrinsic semiconductor is pure silicon or germanium.
- Doping changes its conductivity by adding impurities.
- Phosphorus is a Group V element (has 5 valence electrons).
- It donates extra electrons when added to silicon.
- So it increases negative charge carriers (electrons).
Last verified on 22-05-2026
ہال ایفیکٹ کس چیز کے تعین کے لیے استعمال ہوتا ہے؟
- Type of charge carriers
- Carrier concentration
- Mobility of charge carriers
- All of these
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Explanation
- The Hall Effect occurs when a magnetic field is applied perpendicular to a current-carrying conductor.
- It produces a measurable Hall voltage.
- This effect gives important information about charge carriers in a material.
- It helps identify type, number, and motion of carriers.
- So it is widely used in solid-state physics.
Last verified on 22-05-2026
ایک مثالی گیس کے آئسو تھرمل عمل میں کیا ہوتا ہے؟
- Heat added equals change in internal energy
- Heat entering the system equals work done by the system
- Work done is zero
- None of these
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Explanation
- An isothermal process occurs at constant temperature.
- For an ideal gas, internal energy depends only on temperature.
- So in isothermal process, change in internal energy is zero (ΔU = 0).
- From first law: Q = W.
- Heat supplied is completely converted into work.
Last verified on 22-05-2026
- Becomes zero
- Halves
- Doubles
- None of these
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Explanation
- Heisenberg’s Uncertainty Principle relates position and momentum.
- It states that Δx × Δp ≥ ħ/2.
- Position uncertainty (Δx) and momentum uncertainty (Δp) are inversely related.
- If one decreases, the other must increase.
- So precision in position reduces precision in momentum.
Last verified on 22-05-2026
