1. What does LPG stand for?
A) Liquid Propane Gas
B) Liquefied Petroleum Gas
C) Liquefied Propane Gas
D) Low Pressure Gas
Correct Answer: B) Liquefied Petroleum Gas
Explanation: LPG refers to Liquefied Petroleum Gas, commonly used as fuel for heating, cooking, and vehicles.

2. What is the full form of CNG?
A) Carbon Neutral Gas
B) Compressed Natural Gas
C) Chemical Nitrogen Gas
D) Crude Natural Gas
Correct Answer: B) Compressed Natural Gas
Explanation: CNG stands for Compressed Natural Gas, a fuel alternative to gasoline, consisting mainly of methane.

3. RNA stands for what?
A) Radiated Nuclear Acid
B) Ribosomal Nucleic Acid
C) Ribonucleic Acid
D) Reverse Nucleic Acid
Correct Answer: C) Ribonucleic Acid
Explanation: RNA refers to Ribonucleic Acid, a molecule essential for various biological functions including protein synthesis.

4. What is the full form of DNA?
A) Deoxyribonucleic Acid
B) Dioxyribonucleic Acid
C) Deoxyribonucleic Amplifier
D) Dextrorotatory Nucleic Acid
Correct Answer: A) Deoxyribonucleic Acid
Explanation: DNA stands for Deoxyribonucleic Acid, the molecule that carries genetic instructions in living organisms.

5. RBC stands for what?
A) Ribosome Blood Cells
B) Red Blood Cells/Corpuscles
C) Respiratory Blood Circles
D) Red Bio Cells
Correct Answer: B) Red Blood Cells/Corpuscles
Explanation: RBC refers to Red Blood Cells or Corpuscles, which carry oxygen from the lungs to the rest of the body.

6. ATP stands for what?
A) Adenosine Tri Phosphate
B) Activated Tri Phosphate
C) Adenosine Transmitters Phase
D) Acetone Tri Phosphate
Correct Answer: A) Adenosine Tri Phosphate
Explanation: ATP stands for Adenosine Tri Phosphate, the energy carrier in cells.

7. What does ECG mean?
A) Electro Chemical Gradient
B) Electro Cardiac Graph
C) Electro Cardio Gram
D) Electro Cardiac Generation
Correct Answer: C) Electro Cardio Gram
Explanation: ECG refers to Electro Cardio Gram, a test used to measure the electrical activity of the heart.

8. What is the full form of CFC?
A) Chlorofluorocarbons
B) Chloro Fluoro Carbon
C) Chlorine Fluoride Carbon
D) Carbon Fluorocarbon
Correct Answer: B) Chloro Fluoro Carbon
Explanation: CFC stands for Chloro Fluoro Carbon, commonly used in refrigeration, but harmful to the ozone layer.

9. AIDS stands for what?
A) Acute Immuno Deficiency Syndrome
B) Acquired Immune Deficiency Syndrome
C) Anti-Infection Disease Syndrome
D) Acute Infection Disease Syndrome
Correct Answer: B) Acquired Immune Deficiency Syndrome
Explanation: AIDS refers to Acquired Immune Deficiency Syndrome, a condition caused by the HIV virus that weakens the immune system.

10. PVC stands for what?
A) Poly Vinyl Carbonate
B) Poly Vinyl Chloride
C) Permanent Vinyl Compound
D) Polyvarious Carbonate
Correct Answer: B) Poly Vinyl Chloride
Explanation: PVC refers to Poly Vinyl Chloride, a versatile plastic used in a variety of applications.

11. LASER stands for what?
A) Light Amplification by Simulated Emission of Radiation
B) Light Augmentation by Stimulated Emission of Radiation
C) Light Application by Stimulated Emission of Radiation
D) Light Amplification by Spontaneous Emission of Radiation
Correct Answer: A) Light Amplification by Stimulated Emission of Radiation
Explanation: LASER stands for Light Amplification by Stimulated Emission of Radiation, a device that emits coherent light.

12. What does STP stand for?
A) Standard Temperature and Pressure
B) Standard Time and Pressure
C) Standard Temperature and Pulse
D) Standard Time and Pulse
Correct Answer: A) Standard Temperature and Pressure
Explanation: STP refers to Standard Temperature and Pressure, a reference point for gases used in scientific calculations.

13. What is the full form of BTU?
A) British Thermal Unit
B) Basic Temperature Unit
C) British Testing Unit
D) Base Thermal Unit
Correct Answer: A) British Thermal Unit
Explanation: BTU stands for British Thermal Unit, a unit of energy used to measure heat.

14. What does ‘CPU’ stand for in computing?
A) Central Processing Unit
B) Central Power Unit
C) Core Processing Unit
D) Computer Processing Unit
Correct Answer: A) Central Processing Unit
Explanation: CPU stands for Central Processing Unit, which is the primary component of a computer responsible for executing instructions.

15. What is the full form of ‘RAM’ in computing?
A) Read Access Memory
B) Random Access Memory
C) Random Adjustment Memory
D) Readable Access Memory
Correct Answer: B) Random Access Memory
Explanation: RAM stands for Random Access Memory, a type of computer memory that can be accessed randomly at any time.

16. What does ‘USB’ stand for?
A) Universal System Bus
B) Universal Serial Bus
C) Universal Secure Bus
D) Uniform Serial Bus
Correct Answer: B) Universal Serial Bus
Explanation: USB stands for Universal Serial Bus, a standard for connecting peripherals to a computer.

17. What does ‘HTTP’ stand for?
A) Hyper Text Transfer Protocol
B) Hyper Tool Transfer Protocol
C) Hyper Text Test Protocol
D) Hyper Terminal Transfer Protocol
Correct Answer: A) Hyper Text Transfer Protocol
Explanation: HTTP stands for Hyper Text Transfer Protocol, a protocol used for transferring data over the web.

18. What is the full form of ‘URL’?
A) Uniform Resource Locator
B) Universal Resource Locator
C) Universal Retrieval Locator
D) Uniform Retrieval Locator
Correct Answer: A) Uniform Resource Locator
Explanation: URL stands for Uniform Resource Locator, which is the address used to access resources on the web.

19. What does ‘ATM’ stand for in finance?
A) Automated Teller Machine
B) Automated Transaction Machine
C) Automated Trade Machine
D) All Transaction Machine
Correct Answer: A) Automated Teller Machine
Explanation: ATM stands for Automated Teller Machine, which is a device that allows bank customers to perform financial transactions.

20. What is the full form of ‘FBI’?
A) Federal Bureau of Information
B) Federal Bureau of Investigation
C) Federal Bureau of Intelligence
D) Federal Bureau of Insurance
Correct Answer: B) Federal Bureau of Investigation
Explanation: FBI stands for Federal Bureau of Investigation, a domestic intelligence and security service of the United States.

21. What does ‘URL’ stand for in web technology?
A) Uniform Resource Locator
B) Uniform Record Locator
C) Universal Resource Locator
D) Universal Retrieval Locator
Correct Answer: A) Uniform Resource Locator
Explanation: URL stands for Uniform Resource Locator, which is the address used to access resources on the internet.

22. What is the full form of ‘VPN’?
A) Virtual Private Network
B) Variable Private Network
C) Volatile Private Network
D) Virtual Public Network
Correct Answer: A) Virtual Private Network
Explanation: VPN stands for Virtual Private Network, which allows a secure connection to a private network over the internet.

23. What does ‘SEO’ stand for?
A) Search Engine Operation
B) Secure Encrypted Online
C) Search Engine Optimization
D) Secure Engine Online
Correct Answer: C) Search Engine Optimization
Explanation: SEO stands for Search Engine Optimization, the process of improving the visibility of a website in search engines.

24. What does ‘PDF’ stand for?
A) Portable Data File
B) Portable Document Format
C) Portable Digital File
D) Public Document File
Correct Answer: B) Portable Document Format
Explanation: PDF stands for Portable Document Format, a file format used to present documents independent of software, hardware, or operating systems.

Most Important And Repeated Abbreviations

1. What does LED stand for?
A) Light Emitting Display
B) Light Emitting Diode
C) Low Emitting Diode
D) Laser Emitting Diode
Correct Answer: B) Light Emitting Diode
Explanation: LED stands for Light Emitting Diode, a semiconductor device that emits light when current flows through it.

2. What is the full form of LCD?
A) Light Crystal Display
B) Liquid Crystal Display
C) Light Component Display
D) Liquid Core Display
Correct Answer: B) Liquid Crystal Display
Explanation: LCD stands for Liquid Crystal Display, a flat-panel display technology commonly used in screens.

3. What does AMU stand for?
A) Atomic Mass Unit
B) Atomic Measurement Unit
C) Atomic Magnitude Unit
D) Atomic Molecular Unit
Correct Answer: A) Atomic Mass Unit
Explanation: AMU stands for Atomic Mass Unit, which is used to measure the mass of atoms and molecules.

4. What does EMF stand for?
A) Electro Magnet Force
B) Electro Magnetic Field
C) Electro Motive Force
D) Electro Magnetic Force
Correct Answer: C) Electro Motive Force
Explanation: EMF stands for Electro Motive Force, the force that drives the movement of charge carriers (e.g., electrons).

5. What is the full form of CRT?
A) Cathode Ray Television
B) Cathode Ray Tube
C) Current Ray Tube
D) Chemical Ray Tube
Correct Answer: B) Cathode Ray Tube
Explanation: CRT stands for Cathode Ray Tube, an older technology used in television and computer monitors.

6. What does AWACS stand for?
A) Airborne Warning and Communication System
B) Air Warfare and Control System
C) Airborne Warning and Control System
D) Airborne Wireless Communication System
Correct Answer: C) Airborne Warning and Control System
Explanation: AWACS refers to Airborne Warning and Control System, a radar system used for surveillance and command control.

7. What is the full form of CCTV?
A) Closed Circuit Television
B) Continuous Circuit Television
C) Clear Circuit Television
D) Control Circuit Television
Correct Answer: A) Closed Circuit Television
Explanation: CCTV stands for Closed Circuit Television, a system used for security and surveillance.

8. What does ABM stand for?
A) Anti-Balanced Missile
B) Anti-Ballistic Missile
C) Air-Borne Missile
D) Anti-Battle Missile
Correct Answer: B) Anti-Ballistic Missile
Explanation: ABM stands for Anti-Ballistic Missile, designed to intercept and destroy ballistic missiles.

9. What is the full form of ATM?
A) Automated Teller Machine
B) Automated Transaction Machine
C) Automatic Teller Machine
D) Advanced Teller Machine
Correct Answer: A) Automated Teller Machine
Explanation: ATM stands for Automated Teller Machine, a device that provides automated banking services.

10. What does CD stand for?
A) Compact Data
B) Compact Digital
C) Compact Disc
D) Comprehensive Disc
Correct Answer: C) Compact Disc
Explanation: CD stands for Compact Disc, a digital optical disc storage format used for music and data.

11. What is the full form of DVD?
A) Digital Versatile Disc
B) Digital Video Disc
C) Dynamic Video Disc
D) Dynamic Versatile Disc
Correct Answer: D) Dynamic Versatile Disc
Explanation: DVD stands for Dynamic Versatile Disc, an optical disc format used for video, audio, and data storage.

12. What does FM stand for?
A) Frequency Modulation
B) Frequency Measurement
C) Function Modulation
D) Fast Modulation
Correct Answer: A) Frequency Modulation
Explanation: FM stands for Frequency Modulation, a method of encoding data in a carrier wave.

13. What is the full form of GMT?
A) Greenwich Mean Time
B) Global Mean Time
C) General Mountain Time
D) Geographical Mean Time
Correct Answer: A) Greenwich Mean Time
Explanation: GMT stands for Greenwich Mean Time, the standard time at the Prime Meridian (0° longitude).

14. What does HIV stand for?
A) High Immune Virus
B) Human Immunodeficiency Virus
C) High Infectious Virus
D) Healthy Immuno Virus
Correct Answer: B) Human Immunodeficiency Virus
Explanation: HIV stands for Human Immunodeficiency Virus, the virus that causes AIDS.

15. What is the full form of ICU?
A) Intensive Cardiac Unit
B) Intensive Care Unit
C) Intensive Critical Unit
D) Intensive Circulatory Unit
Correct Answer: B) Intensive Care Unit
Explanation: ICU stands for Intensive Care Unit, a hospital unit for patients with severe or life-threatening illnesses.

16. What does RADAR stand for?
A) Radio Detection and Ranging
B) Radio Analysis and Detection
C) Radio Activated Detection and Ranging
D) Radiant Detection and Ranging
Correct Answer: A) Radio Detection and Ranging
Explanation: RADAR stands for Radio Detection and Ranging, a system used to detect and determine the distance of objects.

17. What is the full form of SMS?
A) Short Message Service
B) Secure Messaging System
C) Standard Message Service
D) Simple Messaging Service
Correct Answer: A) Short Message Service
Explanation: SMS stands for Short Message Service, a text messaging service used on mobile devices.

18. What does RAM stand for?
A) Random Access Memory
B) Readable Access Memory
C) Random Arrangement Memory
D) Read Only Memory
Correct Answer: A) Random Access Memory
Explanation: RAM stands for Random Access Memory, a type of computer memory that allows data to be accessed quickly.

19. What is the full form of ROM?
A) Read Only Memory
B) Readable Output Memory
C) Random Output Memory
D) Read Optimum Memory
Correct Answer: A) Read Only Memory
Explanation: ROM stands for Read Only Memory, a type of storage used in computers and other devices that can only be read, not written to.

20. What does LAN stand for?
A) Local Area Network
B) Local Applied Network
C) Light Area Network
D) Limited Access Network
Correct Answer: A) Local Area Network
Explanation: LAN stands for Local Area Network, a network that connects computers within a limited area like a building or campus.

21. What is the full form of WAN?
A) Wide Area Network
B) Wireless Area Network
C) Web Area Network
D) Worldwide Area Network
Correct Answer: A) Wide Area Network
Explanation: WAN stands for Wide Area Network, a telecommunications network that extends over a large geographical area.

22. What does CPU stand for?
A) Central Processing Unit
B) Core Processing Unit
C) Central Power Unit
D) Control Processing Unit
Correct Answer: A) Central Processing Unit
Explanation: CPU stands for Central Processing Unit, which is the primary part of a computer responsible for processing data.

23. What is the full form of WWW?
A) World Wide Web
B) World Web Work
C) World Wide Wire
D) Wide World Web
Correct Answer: A) World Wide Web
Explanation: WWW stands for World Wide Web, a system of interlinked hypertext documents accessed through the internet.

24. What does BIOS stand for?
A) Basic Integrated Operating System
B) Basic Input Output System
C) Binary Input Output System
D) Base Internal Operating System
Correct Answer: B) Basic Input Output System
Explanation: BIOS stands for Basic Input Output System, firmware used to perform hardware initialization during the booting process of a computer.

25. What is the full form of HTML?
A) Hyper Text Mark-up Language
B) High Text Mark-up Language
C) Hyper Terminal Mark-up Language
D) Hyper Technology Mark-up Language
Correct Answer: A) Hyper Text Mark-up Language
Explanation: HTML stands for Hyper Text Mark-up Language, the standard language used to create web pages.

26. What does HTTP stand for?
A) Hyper Text Transfer Protocol
B) High Transfer Text Protocol
C) Hyper Terminal Text Protocol
D) Hyper Transfer Protocol
Correct Answer: A) Hyper Text Transfer Protocol
Explanation: HTTP stands for Hyper Text Transfer Protocol, the protocol used to transfer data over the internet.

27. What is the full form of IBM?
A) International Bureau of Machines
B) International Business Machines
C) Information Business Machine
D) International Binary Machines
Correct Answer: B) International Business Machines
Explanation: IBM stands for International Business Machines, a multinational technology company.

28. What does BASIC stand for?
A) Binary Arithmetic Symbolic Instruction Code
B) Beginner’s All Purpose Symbolic Instruction Code
C) Basic Arithmetic Symbolic Instruction Code
D) Basic Application Symbolic Instruction Code
Correct Answer: B) Beginner’s All Purpose Symbolic Instruction Code
Explanation: BASIC stands for Beginner’s All Purpose Symbolic Instruction Code, a high-level programming language.