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General Science & Technology

General Awareness · Static GK, Science-Tech & Current

Useful for: Railway RRB, OSSC RHT — Regular High School Teacher, UPSC NDA/NA, UPSC CDS, UPSC CAPF (AC), OSEPA Primary Teacher / JT Category-I, OSEPA Upper Primary — Arts, OSEPA Upper Primary — Science

and 9 more exams

OSSC Science, OSSSC Govt Physical Education Teacher (PET), OSSSC Govt TGT Arts, OSSSC Govt TGT Science — CBZ, OSSSC Govt TGT Science — PCM, SSB Language Teachers, SSB Lecturer (Degree Colleges), SSB TGT CBZ, SSB TGT PCM

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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

Light travels fastest in which of these?
1. Vacuum
2. Air at sea level
3. Glass
4. Water
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Answer: (a) Vacuum. Light travels fastest in Vacuum.
The atomic number of an element equals the number of what in its nucleus?
1. Protons
2. Neutrons only
3. Molecules
4. Electron shells
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Answer: (a) Protons. The atomic number of an element equals the number of Protons in its nucleus.
Vitamin D deficiency in children is classically associated with what?
1. Scurvy
2. Rickets
3. Night blindness
4. Beriberi
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Answer: (b) Rickets. Vitamin D deficiency in children is classically associated with Rickets.
Which cell organelle is known as the powerhouse of the cell?
1. Lysosome
2. Ribosome
3. Mitochondrion
4. Golgi body
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Answer: (c) Mitochondrion. Mitochondrion is known as the powerhouse of the cell.
Which mirror is commonly used as a rear-view mirror in vehicles?
1. Cylindrical mirror
2. Plane mirror only
3. Concave mirror
4. Convex mirror
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Answer: (d) Convex mirror. Convex mirror is commonly used as a rear-view mirror in vehicles.
IMF is headquartered in which city?
1. New York
2. London
3. Washington, D.C.
4. Geneva
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Answer: (c) Washington, D.C.. IMF is headquartered in Washington, D.C.
A firewall primarily helps do what?
1. Filter network traffic according to security rules
2. Convert text to speech
3. Physically cool a CPU
4. Increase monitor brightness
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Answer: (a) Filter network traffic according to security rules. A firewall primarily helps do Filter network traffic according to security rules.
Concept check: Which device forwards data packets between different networks?
1. Plotter
2. Keyboard
3. Router
4. Scanner
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Answer: (c) Router. Router (device) forwards data packets between different networks.
Revision check: USB stands for what?
1. Universal Serial Bus
2. User Serial Band
3. Universal Storage Base
4. Unified System Buffer
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Answer: (a) Universal Serial Bus. USB stands for Universal Serial Bus.
Concept check: Which protocol is commonly used for secure web browsing?
1. FTP only
2. POP3 only
3. HTTPS
4. SMTP only
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Answer: (c) HTTPS. HTTPS is commonly used for secure web browsing.
Static-GK drill: IMF is headquartered in which city?
1. Geneva
2. New York
3. London
4. Washington, D.C.
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Answer: (d) Washington, D.C.. IMF is headquartered in Washington, D.C.
Which spreadsheet application is part of Microsoft Office?
1. Notepad
2. WordPad
3. Excel
4. Paint
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Answer: (c) Excel. Excel is part of Microsoft Office.
IAEA is headquartered in which city?
1. Vienna
2. Geneva
3. Paris
4. Rome
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Answer: (a) Vienna. IAEA is headquartered in Vienna.
Concept check: ASEAN Secretariat is in which city?
1. Bangkok
2. Manila
3. Jakarta
4. Singapore
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Answer: (c) Jakarta. ASEAN Secretariat is in Jakarta.
Static-GK drill: DNS primarily performs which function?
1. Encrypts every email
2. Controls monitor brightness
3. Creates spreadsheet formulas
4. Translates domain names to IP addresses
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Answer: (d) Translates domain names to IP addresses. DNS primarily performs Translates domain names to IP addresses.