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۔
ٹیلی فون کو کس نے ایجاد کیا؟
- Thomas Edison
- Nikola Tesla
- Alexander Graham Bell
- None of these
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Explanation
- Alexander Graham Bell is credited as the inventor of the telephone.
- He was awarded the first successful patent for it.
- The telephone was invented in 1876.
- Bell made the first-ever telephone call to his assistant Thomas Watson.
Last verified on 31-03-2026
ہڈیوں اور دانتوں کا بنیادی جزو _____ ہے؟
- Calcium Carbonate
- Calcium Phosphate
- Magnesium Sulfate
- None of these
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Explanation
- Calcium phosphate, specifically hydroxyapatite, is the main component of bones and teeth.
- It is a calcium salt of phosphoric acid.
- It is the primary mineral constituent of bone tissue, making up about 70-80% of bone dry weight.
- Calcium phosphate gives bones and teeth their strength and rigidity.
Last verified on 31-03-2026
بجلی پیدا کرنے کا سب سے سستا ذریعہ کون سا ہے؟
- Nuclear
- Solar
- Hydel
- None of these
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Explanation
- The cheapest source of electricity generation is Solar Energy.
- Solar energy uses sunlight, which is free and renewable.
- Costs have dropped significantly due to modern solar panel technology.
- It avoids fuel costs and environmental pollution.
Last verified on 31-03-2026
مندرجہ ذیل میں سے کون وائرس کی وجہ سے نہیں ہے؟
- Typhoid
- Choler
- Flu
- Jaundice
- Both A and B
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Explanation
- Diseases can be caused by bacteria, viruses, or other pathogens.
- Flu (Influenza) and Jaundice (Hepatitis A, B, or C) are caused by viruses.
- Typhoid and Cholera are caused by bacteria.
- Therefore, Typhoid and Cholera are not viral diseases.
Last verified on 31-03-2026
مشتری کا قطر ______ کے گیارہ گنا قطر ہے؟
- Earth
- Mars
- Mercury
- None of these
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Explanation
- Jupiter's diameter is about 11 times the diameter of Earth.
- Jupiter is the largest planet in our solar system.
Last verified on 30-03-2026
بھاری پانی کا نقطہ انجماد کیا ہے؟
- 0°C
- 3.82°C
- 4.00°C
- None of these
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Explanation
- The freezing point of heavy water is 3.82°C:
- Heavy water (D2O) Regular water
- Freezing point 3.82°C 0°C |
- Boiling point 101.42°C 100°C |
- Heavy water is made up of two deuterium atoms and one oxygen atom.
- It contains more deuterium, a hydrogen isotope, than regular water, which contains hydrogen-1.
- Heavy water is used in reaction mechanisms.
- It is is prepared by electrolyzing water.
Last verified on 30-03-2026
- 82
- 274
- 97
- None of these
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Explanation
Saturn is the second-largest planet in the solar system.
Ganymede (Moon of Jupiter) is the largest satellite in the solar system.
Planets and Natural Satellites:
- Mercury: 0
- Venus: 0
- Earth: 1 (Moon)
- Mars: 2 (Deimos, Phobos)
- Jupiter: 95
- Saturn: 274
- Uranus: 27
Last verified on 30-03-2026
امرود میں زیادہ سے زیادہ کون سا وٹامن ہوتا ہے؟
- Vitamin K
- Vitamin B
- Vitamin C
- Vitamin D
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Explanation
- Guava is rich in Vitamin C.
- Contains more Vitamin C than oranges per 100 g.
- Strengthens immunity and skin health.
- Helps in iron absorption and antioxidant protection.
Last verified on 30-03-2026
ہومیوپیتھی کس نے دریافت کیا؟
- Samuel Hahnemann
- Hippocrates
- Paracelsus
- None of these
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Explanation
Samuel Hahnemann
- Birth: 1755
- Death: 1843
- Country: Germany
- Principle: “Similia similibus curentur” (like cures like)
- Famous work: Organon of Medicine
Last verified on 30-03-2026
- Bacteria
- Virus
- Fungi
- None of these
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Explanation
Last verified on 3-03-2026