PPSC PAST PAPERS MCQS 2004 TO 2020 OF EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
ایک فیوز تار (فیوز) _____ کے لیے استعمال ہوتا ہے؟
Prevent damage due to unusually high voltage
Convert AC into DC
Convert DC into AC
None of these
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Explanation
A fuse wire is designed to protect electrical devices by melting when the current exceeds a safe level, preventing damage from high voltage or short circuits. It acts as a safety device , breaking the circuit and stopping the flow of excessive current. Fuse wires are made of materials with a low melting point, like tin or lead alloy .
ملیریا سے بنیادی طور پر کون سے دو اعضاء متاثر ہوتے ہیں؟
Lungs and Heart
Kidneys and Lungs
Heart and Brain
Spleen and Liver
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Explanation
Spleen and Liver are the two organs mainly affected by malaria.
Malaria primarily targets the liver , where parasites multiply, and the spleen .
It becomes enlarged due to the destruction of infected red blood cells.
ذیابیطس ________ کی خرابی کی وجہ سے ہے؟
Spleens
Liver
Pancreas
None of these
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Explanation
Pancreatic malfunction causes diabetes. Diabetes occurs w hen low insulin levels prevent sugar from entering cells. Cellular resistance: Body cells ignore insulin, l eaving glucose in the bloodstream. Last updated 18-07-2026 by NA
لیوکیمیا ____ کی بیماری ہے؟
Lungs
Blood
Skin
Nerves
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Explanation
Leukemia is cancer of the body's blood-forming tissues, including the bone marrow and the lymphatic system.
Many types of leukemia exist.
Some forms of leukemia are more common in children .
Other forms of leukemia occur mostly in adults.
شوگر جسم میں کس چیز کی کمی کی وجہ سے لاحق ہوتی ہے؟
Sugar
Insulin
Calcium
Vitamins
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Explanation
Lack of insulin causes diabetes.
Diabetes is a condition that happens when your blood sugar (glucose) is too high .
It develops when your p ancreas doesn't make enough insulin .
رات کو درختوں کے نیچے سونا خطرناک ہے کیونکہ پودے _____ باہر نکلتے ہیں؟
Carbon monoxide
Less oxygen
More oxygen
Carbon dioxide
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Explanation
At night , trees switch from photosynthesis to respiration, releasing carbon dioxide instead of oxygen. This can increase CO2 levels around the tree, which may be harmful to breathe in for prolonged periods.
There's no photosynthesis (which produces oxygen) during the night .
During the day, trees perform photosynthesis , taking in carbon dioxide (CO2) and releasing oxygen (O2).
کھانا پکانے کی گیس ______ کا مرکب ہے؟
Butane and Nitrogen
Propane and Butane
Carbon and Propane
None of these
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Explanation
Cooking gas, also known as liquified petroleum gas (LPG), is a mixture of propane and butane.
It is a flammable mixture of hydrocarbon gases.
کائنات میں سب سے زیادہ پایا جانے والا عنصر کونسا ہیں؟
Oxygen
Helium
Hydrogen
None of these
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Explanation
Hydrogen is the most abundant element in the universe .
it is about 75 percent of its normal matter and w as created in the Big Bang.
Additional information:
Oxygen is the most abundant element in the earth`s crust.
Calcium is the most abundant mineral in the human body.
عام طور پر "لاک جاو" کے نام سے جانے والی حالت کس وجہ سے ہوتی ہے؟
Diphtheria
Pertussis
Tetanus
Meningitis
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Explanation
Tetanus is a bacterial infection that can cause muscle stiffness and spasms.
It particularly in the jaw muscles , leading to the characteristic symptom of " lockjaw ".
سطح سمندر سے کسی شے کی اونچائی کی پیمائش کے لئے ایک آلہ استعمال کیا جاتا ہے؟
Altimeter
Barometer
Hygrometer
None of these
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Explanation
Altimeters:
Function:
It primarily measures altitude by detecting changes in atmospheric pressure.
Aviation use:
Pilots heavily rely on altimeters to determine their aircraft's height above sea level during flight.
Types :
There are different types of altimeters including pressure altimeters and radio altimeters.