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۔
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.
آواز _______ میں تیز ترین سفر کرتی ہے؟
- Air
- Water
- Diamond
- Steel
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Explanation
- Sound travels fastest in diamond,
- With a speed of approximately 12,000 meters per second (m/s).
- Because sound travels fastest in stiff, dense materials
Additional information
The speeds of sound in different materials:
- Air: 343 m/s
- Water: 1433 m/s
- Wood: 3300-3600 m/s
- Brick: 4176 m/s
- Steel: 6100 m/s
- Diamond: 12000 m/s
تھیلیسیمیا _____ میں غیر معمولی ہونے کی وجہ سے ہے؟
- Lymphatic fluid
- Hemoglobin
- Platelets
- White blood cells
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Explanation
Thalassemia is a genetic blood disorder caused by an abnormality in hemoglobin production.
It leads to reduced oxygen-carrying capacity of red blood cells.
- Joule
- Energy/Heat
- Work
- None of these
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Explanation
Joule is a unit of work or energy or heat.
Joule is a scalar quantity.
SI base units: kg⋅m2⋅s−2
Symbol: J
Additional Information:
It is equal to the work done by the force of one newton acting through one meter.
Named in honor of the English physicist James Prescott Joule.
Joule equals 107 ergs or approximately 0.7377 foot-pounds.
پھول کے نر تولیدی حصے کو کیا کہتے ہیں؟
- Stamen
- Pistil
- Carpel
- Anther
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Explanation
- The male reproductive part of a flower is called the Stamen.
It consists of two parts:
- Anther (produces pollen grains)
- Filament (supports the anther)
بھاپ کا انجن کس نے ایجاد کیا؟
- Bessel
- James Watt
- Faraday
- All of these
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Explanation
James Watt, a Scottish engineer, patented improvements to the steam engine in 1781.
He significantly enhancing its efficiency and power, and revolutionizing industry and transportation.
ہیموگلوبن کا بنیادی جزو _____ ہے؟
- Calcium
- Iron
- Chlorine
- Copper
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Explanation
The main constituent of hemoglobin is iron.
Hemoglobin transports oxygen and exhibits a quaternary protein structure.
Iron is crucial for hemoglobin formation; its deficiency can impact hemoglobin production.
Heme in hemoglobin is protoporphyrin IX.
Infants reach adult hemoglobin levels by the end of their first year.
Ferric ions are not part of hemoglobin.
Hemoglobin is found dissolved in plasma.
