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.

466
Total Questions

Practice Questions

Page 3 of 24
Question #41
What does the 'URL' in a website address stand for?
A. Unique Resource Link
B. Unified Reference Link
C. User Retrieval Location
D. Universal Resource Locator
Discuss
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Correct Answer: Option D

Explanation:
A URL (Uniform/Universal Resource Locator) provides the address of a resource on the internet.
This question belongs to: Static General Knowledge Science and Technology
Question #42
Which of these is a common type of artificial intelligence used for image recognition?
A. CNN (Convolutional Neural Network)
B. HTML
C. FTP
D. SQL
Discuss
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Correct Answer: Option A

Explanation:
CNNs are deep learning models particularly effective at processing and analyzing visual imagery.
This question belongs to: Static General Knowledge Science and Technology
Question #43
What is the smallest unit of digital data?
A. Bit
B. Kilobyte
C. Gigabyte
D. Byte
Discuss
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Correct Answer: Option A

Explanation:
A bit (binary digit) is the basic unit of information in computing.
This question belongs to: Static General Knowledge Science and Technology
Question #44
Which of these is a major biotechnology application?
A. Manufacturing cars
B. Building bridges
C. Mining coal
D. Producing vaccines
Discuss
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Correct Answer: Option D

Explanation:
Biotechnology involves using biological systems to develop products, including life-saving vaccines.
This question belongs to: Static General Knowledge Science and Technology
Question #45
What is a 'Cloud Computing' service model where resources are provided over the internet?
A. Local Database
B. CD-ROM
C. Hardware Storage
D. SaaS (Software as a Service)
Discuss
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Correct Answer: Option D

Explanation:
SaaS allows users to access software applications over the internet via a subscription.
This question belongs to: Static General Knowledge Science and Technology
Question #46
Which of these describes '3D Printing'?
A. Creating holograms with light
B. Designing complex blueprints on computers
C. Printing high-quality photos on paper
D. Additive manufacturing process to build 3D objects
Discuss
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Correct Answer: Option D

Explanation:
3D printing is an additive manufacturing process that layers material to build a three-dimensional object.
This question belongs to: Static General Knowledge Science and Technology
Question #47
What is the primary gas found in the Earth's core?
A. Iron and Nickel (liquid/solid metals, not gas)
B. Hydrogen
C. Oxygen
D. Carbon Dioxide
Discuss
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Correct Answer: Option A

Explanation:
The Earth's core is primarily composed of iron and nickel, not gas.
This question belongs to: Static General Knowledge Science and Technology
Question #48
What is the role of an 'Algorithm' in software?
A. A set of step-by-step instructions to solve a problem
B. To provide a user interface
C. To store hardware drivers
D. To act as a physical monitor
Discuss
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Correct Answer: Option A

Explanation:
An algorithm is a logical sequence of steps for performing a task or solving a problem.
This question belongs to: Static General Knowledge Science and Technology
Question #49
Which of these is a renewable energy source derived from plants?
A. Coal
B. Biofuel
C. Diesel
D. Petrol
Discuss
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Correct Answer: Option B

Explanation:
Biofuel is derived from biomass, such as plant materials.
This question belongs to: Static General Knowledge Science and Technology
Question #50
Which technology enables wireless communication over very short distances?
A. Satellite Radio
B. NFC (Near Field Communication)
C. AM Radio
D. Fiber Optics
Discuss
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Correct Answer: Option B

Explanation:
NFC is used for secure short-range wireless communication, like contactless payments.
This question belongs to: Static General Knowledge Science and Technology
Question #51
What is 'Virtual Reality' (VR)?
A. A high-speed internet service
B. A computer-generated simulation of an environment
C. A way to print 3D objects
D. A method to compress large video files
Discuss
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Correct Answer: Option B

Explanation:
VR uses technology to immerse users in a simulated 3D environment.
This question belongs to: Static General Knowledge Science and Technology
Question #52
Which celestial body is known as a 'Gas Giant'?
A. Mercury
B. Jupiter
C. Earth
D. Mars
Discuss
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Correct Answer: Option B

Explanation:
Jupiter is the largest planet in our solar system and is a gas giant.
This question belongs to: Static General Knowledge Science and Technology
Question #53
What is 'Encryption' used for?
A. To increase storage capacity
B. To make computers faster
C. To secure data by converting it into a coded format
D. To print 3D documents
Discuss
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Correct Answer: Option C

Explanation:
Encryption encodes data so that only authorized parties can read it.
This question belongs to: Static General Knowledge Science and Technology
Question #54
Which element is essential for human respiration?
A. Helium
B. Nitrogen
C. Oxygen
D. Carbon Dioxide
Discuss
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Correct Answer: Option C

Explanation:
Oxygen is necessary for cellular respiration in the human body.
This question belongs to: Static General Knowledge Science and Technology
Question #55
Which of these is a major contributor to ocean pollution?
A. Oxygen bubbles
B. Seaweed
C. Plastic waste
D. Natural rainfall
Discuss
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Correct Answer: Option C

Explanation:
Plastic pollution has become a major environmental crisis in global oceans.
This question belongs to: Static General Knowledge Science and Technology
Question #56
What is the term for a space flight that doesn't carry a human crew?
A. Lunar landing
B. Manned mission
C. Unmanned mission
D. Orbiting station
Discuss
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Correct Answer: Option C

Explanation:
An unmanned mission, or robotic mission, carries sensors and equipment instead of humans.
This question belongs to: Static General Knowledge Science and Technology
Question #57
Which of these is an example of an Operating System?
A. Google Chrome
B. Word
C. Linux
D. Excel
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Correct Answer: Option C

Explanation:
Linux is a popular open-source operating system.
This question belongs to: Static General Knowledge Science and Technology
Question #58
What is the role of a 'Sensor' in technology?
A. To display images
B. To store personal passwords
C. To detect and respond to physical input
D. To generate power
Discuss
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Correct Answer: Option C

Explanation:
A sensor detects changes in an environment and produces an output, often used in automation.
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Question #59
Which planet is famous for its visible ring system?
A. Venus
B. Saturn
C. Earth
D. Mars
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Correct Answer: Option B

Explanation:
Saturn is widely known for its complex and beautiful ring system.
This question belongs to: Static General Knowledge Science and Technology
Question #60
What does 'CPU' stand for?
A. Connected Processing Unit
B. Central Processing Unit
C. Computer Processing Utility
D. Central Power Unit
Discuss
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Correct Answer: Option B

Explanation:
The CPU (Central Processing Unit) is the main processor of a computer.
This question belongs to: Static General Knowledge Science and Technology

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