Science and Technology MCQs

Static General Knowledge

Science and Technology MCQs

Practice Science and Technology MCQs with answers and detailed explanations covering scientific inventions, technological advancements, space missions, information technology, biotechnology, artificial intelligence, discoveries, innovations and current developments frequently asked in SSC, Railway, Banking, UPSC, JKSSB, Police, Defence, Teaching and other competitive examinations.

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Total Questions

Practice Questions

Page 4 of 24
Question #61
Which of these is a common renewable power source?
A. Natural gas
B. Petroleum
C. Wind energy
D. Coal
Discuss
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Correct Answer: Option C

Explanation:
Wind energy is generated using turbines and is a major renewable source.
This question belongs to: Static General Knowledge Science and Technology
Question #62
What is 'Big Data'?
A. Large amounts of data that require special analysis
B. Small, simple data files
C. Data used for basic arithmetic
D. Data stored on a USB drive
Discuss
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Correct Answer: Option A

Explanation:
Big data refers to data sets so large or complex that traditional data processing software is inadequate.
This question belongs to: Static General Knowledge Science and Technology
Question #63
Which of these is an application of nanotechnology?
A. Building massive skyscrapers
B. Generating wind power
C. Storing water in tanks
D. Medical drug delivery
Discuss
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Correct Answer: Option D

Explanation:
Nanotechnology allows for targeted drug delivery to specific cells in the body.
This question belongs to: Static General Knowledge Science and Technology
Question #64
What is a 'Browser' in computing?
A. Software to access the internet
B. A type of physical keyboard
C. A programming language
D. Hardware to store data
Discuss
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Correct Answer: Option A

Explanation:
A web browser is software used to browse and view websites on the internet.
This question belongs to: Static General Knowledge Science and Technology
Question #65
Which element is known as the 'diamond' base?
A. Silicon
B. Carbon
C. Gold
D. Silver
Discuss
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Correct Answer: Option B

Explanation:
Diamonds are a form of pure carbon.
This question belongs to: Static General Knowledge Science and Technology
Question #66
What is 'Augmented Reality' (AR)?
A. A method of internet security
B. Overlapping digital content onto the real world
C. A way to print 3D materials
D. A complete 3D simulation
Discuss
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Correct Answer: Option B

Explanation:
AR overlays digital information, such as images or text, onto the user's real-world view.
This question belongs to: Static General Knowledge Science and Technology
Question #67
Which gas is required for fire to burn?
A. Carbon Dioxide
B. Argon
C. Nitrogen
D. Oxygen
Discuss
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Correct Answer: Option D

Explanation:
Combustion is a chemical reaction that requires oxygen.
This question belongs to: Static General Knowledge Science and Technology
Question #68
What is a 'Database' used for?
A. Rendering computer graphics
B. Managing and storing data systematically
C. Writing text documents
D. Connecting to Wi-Fi
Discuss
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Correct Answer: Option B

Explanation:
A database is an organized collection of structured information or data.
This question belongs to: Static General Knowledge Science and Technology
Question #69
Which of these is a major source of greenhouse gas emissions?
A. Solar Panel Manufacturing
B. Electric Cars
C. Fossil Fuel Burning
D. Planting Forests
Discuss
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Correct Answer: Option C

Explanation:
Burning coal, oil, and gas for electricity and transport is a leading cause of emissions.
This question belongs to: Static General Knowledge Science and Technology
Question #70
What does 'WiFi' stand for?
A. Web Interface
B. Wide Internet Frequency
C. Wireless Fidelity
D. Wireless Fiber
Discuss
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Correct Answer: Option C

Explanation:
Although not an official acronym, it is commonly associated with Wireless Fidelity.
This question belongs to: Static General Knowledge Science and Technology
Question #71
What is the core function of an 'Operating System'?
A. To play games
B. To manage computer hardware and software resources
C. To edit photos
D. To browse the internet
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Correct Answer: Option B

Explanation:
An OS provides the interface between the hardware and the software applications.
This question belongs to: Static General Knowledge Science and Technology
Question #72
Which of these is an example of an AI application in health?
A. Calculating taxes
B. Writing long essays
C. Designing cars
D. Diagnosing medical images
Discuss
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Correct Answer: Option D

Explanation:
AI systems can analyze X-rays and MRI scans to assist doctors in detecting diseases early.
This question belongs to: Static General Knowledge Science and Technology
Question #73
What is 'Photovoltaic' technology?
A. Burning wood for heat
B. Using wind to spin turbines
C. Converting light to electricity
D. Storing electricity in batteries
Discuss
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Correct Answer: Option C

Explanation:
Photovoltaic cells directly convert light (photons) into electricity (voltage).
This question belongs to: Static General Knowledge Science and Technology
Question #74
What is the term for a computer attack that demands a ransom?
A. Ransomware
B. Hacking
C. Phishing
D. Spamming
Discuss
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Correct Answer: Option A

Explanation:
Ransomware is malicious software that locks a victim's files until a ransom is paid.
This question belongs to: Static General Knowledge Science and Technology
Question #75
Which planet is the second from the sun?
A. Venus
B. Mars
C. Earth
D. Mercury
Discuss
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Correct Answer: Option A

Explanation:
The order of planets is Mercury, Venus, Earth, Mars, etc.
This question belongs to: Static General Knowledge Science and Technology
Question #76
What is the primary function of a 'Microprocessor'?
A. Storing power
B. Connecting to Wi-Fi
C. Controlling the computer's tasks
D. Displaying graphics
Discuss
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Correct Answer: Option C

Explanation:
The microprocessor is the computer's brain, executing instructions and managing input/output.
This question belongs to: Static General Knowledge Science and Technology
Question #77
Which of these is a major impact of Artificial Intelligence?
A. Reduction in electricity use
B. Building more roads
C. Increased automation in industries
D. Lowering mobile phone costs
Discuss
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Correct Answer: Option C

Explanation:
AI is increasingly used to automate repetitive tasks and optimize industrial workflows.
This question belongs to: Static General Knowledge Science and Technology
Question #78
What is the purpose of 'Cybersecurity'?
A. To protect digital systems from attack
B. To improve computer graphics
C. To store backup files
D. To make internet speed faster
Discuss
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Correct Answer: Option A

Explanation:
Cybersecurity protects networks, computers, and data from unauthorized access or damage.
This question belongs to: Static General Knowledge Science and Technology
Question #79
Which gas is often used in advertising signs?
A. Oxygen
B. Neon
C. Nitrogen
D. Hydrogen
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Correct Answer: Option B

Explanation:
Neon gas glows brightly when electrical current passes through it.
This question belongs to: Static General Knowledge Science and Technology
Question #80
What is 'Fiber Optics' used for?
A. Storing physical data
B. Cooking food
C. Faster communication via light
D. Powering cars
Discuss
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Correct Answer: Option C

Explanation:
Fiber optics use thin strands of glass to transmit data as pulses of light.
This question belongs to: Static General Knowledge Science and Technology

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