PPSC PAST PAPERS ALL MCQS 2025 OF EVERYDAY SCIENCE
PPSC 25 years Past Papers Click here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
بیکٹیریا اور فنگس کا تعلق حیاتیاتی اجزاء کے گروپ سے ہے جسے _____ کہا جاتا ہے؟
- Producers
- Consumers
- Predators
- Decomposers
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Bacteria and fungi are examples of decomposers.
- Which are organisms that break down dead organic matter into simpler compounds, releasing nutrients back into the ecosystem.
- This process is essential for nutrient cycling and the health of ecosystems.
تھرموس فلاسک ____ کو کم کرکے چیزوں کو ان کے اصل درجہ حرارت کے قریب رکھتا ہے؟
- Conduction
- Convection
- Radiation
- All of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A thermos flask is designed to reduce heat transfer through all three methods:
- Conduction: The flask has a vacuum insulation, which eliminates conduction through the container.
- Convection: The flask's design and vacuum insulation prevent convective heat transfer.
- Radiation: The flask's reflective coating minimizes radiant heat transfer.
پلیٹ ٹیکٹونک تھیوری کب پیش کی گئی؟
- 1966
- 1876
- 1900
- 1960
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The Plate Tectonic Theory was developed in the 1960s.
It was formally presented around 1967.
The theory explains the movement of Earth’s lithospheric plates.
It helped explain earthquakes, volcanoes, and the formation of mountains.
Plate tectonics unified earlier ideas like continental drift and seafloor spreading.
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
اس سوال کو وضاحت کے ساتھ پڑھیں
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
اس سوال کو وضاحت کے ساتھ پڑھیں
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
اس سوال کو وضاحت کے ساتھ پڑھیں
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
اس سوال کو وضاحت کے ساتھ پڑھیں
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
اس سوال کو وضاحت کے ساتھ پڑھیں
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
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
White clothes reflect most of the sunlight, which helps keep the body cooler compared to darker clothes, which absorb more heat.