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General Science & Static GK

General Awareness · Economy, Science & Static GK

Useful for: SSC CGL

Overview

General science covers everyday physics, chemistry and biology; static GK covers fixed facts such as national symbols and units.

Key points

SI units: force — newton; pressure — pascal; energy — joule; power — watt.
pH below 7 is acidic, 7 neutral, above 7 basic.
Vitamin deficiencies: A — night blindness; C — scurvy; D — rickets; B1 — beriberi.
Blood group O negative is the universal donor; AB positive the universal recipient.
National symbols: animal — tiger; bird — peacock; aquatic animal — Ganges river dolphin; heritage animal — elephant.

Explanation

Sound cannot travel through a vacuum; light travels fastest in a vacuum.
Baking soda is sodium hydrogen carbonate; washing soda is sodium carbonate.
Insulin is made in the pancreas; bile in the liver.
Learn diseases with causes: malaria (Plasmodium, Anopheles), dengue (virus, Aedes).

Step by step

Identify the exact fact asked (person, year, article, place).
Recall it from a linked group, not in isolation.
Eliminate options from the wrong period or category.

Examples

The universal blood donor is → O negative.
Deficiency of vitamin C causes → scurvy.
The SI unit of pressure is → pascal.

Traps and advanced points

Trap: Mixing baking soda and washing soda.
Trap: Calling AB the universal donor.
Trap: Giving rickets to vitamin A.

Quick revision

Units table.
Vitamin ↔ disease.
O− donor, AB+ recipient.

Practice MCQs

Deficiency of Vitamin C in the human body causes which disease?
1. Scurvy
2. Night blindness
3. Beriberi
4. Rickets
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Answer: (a) Scurvy. Vitamin C (ascorbic acid) ki kami se Scurvy (masudon se khoon).
Which gas is most abundant in the Earth's atmosphere?
1. Hydrogen
2. Oxygen
3. Carbon dioxide
4. Nitrogen
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Answer: (d) Nitrogen. Nitrogen (~78%) sabse zyada hai, phir Oxygen (~21%).
The chemical formula of common table salt is:
1. CaCO3
2. NaHCO3
3. NaCl
4. KCl
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Answer: (c) NaCl. Table salt = NaCl (Sodium Chloride).
Which part of the human body produces insulin?
1. Pancreas
2. Kidney
3. Spleen
4. Liver
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Answer: (a) Pancreas. Insulin Pancreas (beta cells of Islets of Langerhans) banata hai — ye blood sugar control karta hai.
The SI unit of electric current is:
1. Ampere
2. Ohm
3. Volt
4. Watt
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Answer: (a) Ampere. Electric current ka SI unit Ampere (A) hai.
India's national aquatic animal is:
1. Gangetic dolphin
2. Olive Ridley turtle
3. Crocodile
4. Blue whale
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Answer: (a) Gangetic dolphin. National aquatic animal = Gangetic Dolphin (2009 me ghoshit).
Which classical dance form is primarily associated with the state of Tamil Nadu?
1. Kuchipudi
2. Kathak
3. Bharatanatyam
4. Odissi
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Answer: (c) Bharatanatyam. Bharatanatyam Tamil Nadu ka classical dance hai.
The process by which green plants make their food using sunlight is called:
1. Photosynthesis
2. Fermentation
3. Respiration
4. Transpiration
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Answer: (a) Photosynthesis. Photosynthesis — chlorophyll sunlight, CO2 aur water se glucose banata hai, oxygen release hoti hai.
Which is the hardest naturally occurring substance known?
1. Diamond
2. Quartz
3. Gold
4. Iron
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Answer: (a) Diamond. Diamond sabse kathor natural substance hai (Mohs scale par 10).
The 'Bharat Ratna' is India's highest:
1. Military award
2. Sports award
3. Gallantry award
4. Civilian award
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Answer: (d) Civilian award. Bharat Ratna India ka sabse uncha civilian award hai (1954 se).