PPSC PAST PAPERS ALL MCQS 2025 OF EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
ایک ایسا علاقہ جہاں جنگلی جانوروں کے شکار اور شوٹنگ کو خصوصی اجازت نامے کے تحت منظم کیا جاتا ہے؟
- Game reserve
- Safari park
- Sanctuary
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A game reserve is an area where hunting and shooting of wild animals are regulated through special permits.These areas are managed to conserve wildlife while allowing controlled hunting for recreational or population management purposes.
وہ گھریلو جاندار جو حادثاتی طور پر بچ گئے، اب قدرتی حالت میں جنگلی رہتے ہیں انہیں _____ کہا جاتا ہے؟
- Endemic
- Extinct
- Feral
- None of these
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Explanation
Feral organisms are domestic animals or plants that have escaped captivity and now live wild in natural conditions.These species often adapt to living independently, outside of human care, and can sometimes become invasive.
سبز سبزیاں کس کا اچھا ذریعہ ہیں؟
- Vitamin and Minerals
- Starch
- Protein
- Fat
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Explanation
Fruit and vegetables are a good source of vitamins and minerals
Vitamins: A, C, K, E, B vitamins (especially Folate).
Minerals: Iron, Calcium, Potassium, Magnesium.
Fiber: Aids in healthy digestion and keeps you feeling full.
Antioxidants: Carotenoids, polyphenols, and chlorophyll fight cell damage.
مندرجہ ذیل میں سے کس کی زیادہ سے زیادہ کیلوری کی قیمت ہے؟
- Carbohydrate
- Fats
- Proteins
- Vitamins
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Explanation
1 g of fat provides 37 kJ of energy on oxidation while
1 g of carbohydrate on oxidation gives 17 kJ of energy.
Hence, fat has the highest calorific value.
| Food component | Energy density |
|---|
| kJ/g | kcal/g |
|---|
| Fat | 37 | 9 |
| Ethanol (drinking alcohol) | 29 | 7 |
| Proteins | 17 | 4 |
| Carbohydrates | 17 | 4 |
| Organic acids | 13 | 3 |
| Polyols (sugar alcohols, sweeteners) | 10 | 2.4 |
| Fiber | 8 | 2 |
آکسیجن کو کس نے دریافت کیا تھا؟
- Boyle
- Scheele
- Priestley
- Cavandish
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Explanation
Joseph Priestly discovered oxygen on August 1, 1774.
The most abundant element in the Earth's crust is oxygen.
It making up 46.6% of Earth's mass.
- Earth
- Mercury
- Pluto
- Venus
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Explanation
Mercury is the only planet without any kind of atmosphere
It's the first planet from the Sun
It is a rocky planet with a trace atmosphere
It is the smallest planet in the Solar System, with an equatorial radius of 2,439.7 kilometres (1,516.0 mi).
Mercury consists of approximately 70% metallic and 30% silicate material.
لوگ موسم گرما میں سفید کپڑے پہننے کا حوالہ دیتے ہیں کیونکہ؟
- The clothes look nice and cool
- Donot absorb heat
- Absorb heat
- None of these
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Explanation
White clothes reflect most of the sunlight, which helps keep the body cooler compared to darker clothes, which absorb more heat.
فوٹو فوبیا _____ کا خوف ہے؟
- Dogs
- Wealth
- Light
- None of these
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Explanation
Photophobia refers to an extreme sensitivity or fear of light.
It often causing discomfort or pain in the eyes.
کشش ثقل کا قانون کس نے دریافت کیا تھا؟
- Isaac Newton
- Thomas Aiva Edison
- Hug Chavez
- Guhlielmo Marconi
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Explanation
Isaac Newton proposed the law in 1687
and utilized it to clarify the observed movements of the planets and their moons.
The law of Gravitation had been mathematically formulated by Johannes Kepler in the early 17th century.
ND28-4-2023
شمسی توانائی کی تبدیلی کے لیے ضروری عنصر ____ ہے؟
- Silicon
- Germanium
- Uranium
- Selenium
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Explanation
The key element required for solar energy conversion in most solar cells is silicon
It is the most common semiconductor material: Silicon is used in about 95% of solar cells sold today.
It is a naturally occurring element: Silicon is the second most abundant element on Earth, after oxygen.
