PPSC PAST PAPERS ALL MCQS 2024 OF EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
کوئلے میں ذخیرہ شدہ توانائی _____ ہے؟
Kinetic Energy
Chemical Energy
Potential Energy
None of these
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Explanation
The energy stored in coal is classified as chemical energy.
It is released during combustion when the chemical bonds in the coal are broken.
This energy is harnessed for heating and electricity generation.
موتیا ______ کی بیماری ہے؟
Eye
Ear
Nervous system
Brain
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Explanation
A cataract is a clouding of the lens in the eye that affects vision. It is a common age-related condition that can cause blurry vision, double vision, and sensitivity to light. Cataracts can be treated with surgery to remove the cloudy lens and replace it with an artificial lens.
ای۔سی۔جی کا استعمال _____ کی بیماری کی تشخیص کے لیے کیا جاتا ہے؟
Brain
Heart
Liver
Kidneys
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Explanation
ECG (Electrocardiogram) is a test used to measure the electrical activity of the heart . It is commonly used for the diagnosis of heart-related ailments, such as:
Arrhythmias (irregular heart rhythms) Coronary artery disease Cardiac arrests Heart failure
گیس ویلڈنگ میں کون سے گیس/عناصر استعمال ہوتے ہیں؟
Oxygen, Acetylene and Argon
Oxygen, Acetylene and Nitrogen
Air and Acetylenes
None of these
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Explanation
Oxy-acetylene welding is the most common gas welding method, using oxygen and acetylene to produce a high-temperature flame. Argon is sometimes used as a shielding gas in welding processes like TIG (Tungsten Inert Gas) welding, making the combination valid in broader gas welding contexts.
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).
لہریں _____ کی کشش ثقل کی وجہ سے ہوتی ہیں؟
Moon
Sun
Earth
Both A and B
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Explanation
Tides are primarily caused by the gravitational pull of both the Moon and the Sun.
The Moon has a stronger effect due to its proximity to Earth.
The Sun's gravitational influence also plays a significant role in the tidal patterns we observe.
مندرجہ ذیل میں سے لمبائی کی اکائی کیا ہے؟
Liter
Kilogram
Meter
Second
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Explanation
Meter is the SI unit of length .
It is used to measure distance or height .
Additional Information :
Liter = unit of volume
Kilogram = unit of mass
Second = unit of time
کون سا نظام جسم کے افعال کے لیے بات چیت اور ہم آہنگی کا ذمہ دار ہے؟
Circulatory System
Respiratory System
Digestive System
Nervous System
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Explanation
The nervous system is the body system that controls and coordinates the functions of all other organ systems. It allowing for integration and regulation of various bodily functions. It consists of the brain, spinal cord, nerves, and sensory organs .
فضا کی تہوں کو کتنے تہوں میں تقسیم کیا گیا ہے۔
3
4
5
6
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Explanation
Atmosphere is divided into Five layers/parts:
Troposphere Stratosphere Mesosphere Thermosphere Exosphere
شیٹ میں پھنس جانے کی اہلیت کو مالیت کہا جاتا ہے۔ مندرجہ ذیل میں سے کون سا دھات سب سے زیادہ قابل عمل ہے؟
Gold
Platinum
Silver
None of these
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Explanation
Gold is the most malleable metal , which means it can be beaten into thin sheets or shapes without breaking.
Gold is a soft, ductile metal with a high degree of plasticity, making it easy to work with.
It can be hammered, rolled, or bent into various forms without cracking or shattering.
