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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Question #1 Report Error
Which artificial intelligence chatbot was launched by Google to compete with OpenAI's ChatGPT?
A. Claude
B. Llama
C. Bing Chat
D. Bard

Correct Answer: Option D


Explanation:
Bard (now rebranded as Gemini) was Google's response to the rise of generative AI chatbots.

Question #2 Report Error
Which space agency successfully landed the 'Chandrayaan-3' mission near the lunar south pole?
A. NASA
B. ESA
C. ISRO
D. Roscosmos

Correct Answer: Option C


Explanation:
The Indian Space Research Organisation (ISRO) achieved this historic feat in August 2023.

Question #3 Report Error
What is the primary technology behind Bitcoin and other cryptocurrencies?
A. Neural Networks
B. Cloud Computing
C. Blockchain
D. Quantum Computing

Correct Answer: Option C


Explanation:
Blockchain is a distributed ledger technology that ensures secure and transparent transactions.

Question #4 Report Error
Which technique is commonly used for gene editing, often referred to as 'genetic scissors'?
A. Gel Electrophoresis
B. ELISA
C. CRISPR-Cas9
D. PCR

Correct Answer: Option C


Explanation:
CRISPR-Cas9 is a revolutionary gene-editing tool that allows scientists to alter DNA sequences.

Question #5 Report Error
Which planet is the target of the 'Artemis' missions?
A. Moon
B. Mars
C. Jupiter
D. Venus

Correct Answer: Option A


Explanation:
Artemis is NASA's program to return humans to the Moon and eventually establish a sustainable presence.

Question #6 Report Error
In computing, what does the acronym 'GPU' stand for?
A. General Processing Unit
B. Graphic Processing Unit
C. Grid Power Unit
D. Global Processing Utility

Correct Answer: Option B


Explanation:
GPUs are essential for rendering graphics and are now widely used in training AI models.

Question #7 Report Error
Which of these gases is the main component of a greenhouse effect that causes global warming?
A. Nitrogen
B. Carbon Dioxide
C. Oxygen
D. Argon

Correct Answer: Option B


Explanation:
Carbon dioxide traps heat in the atmosphere, significantly contributing to global climate change.

Question #8 Report Error
What is the study of the structure and function of proteins called?
A. Genomics
B. Transcriptomics
C. Proteomics
D. Metabolomics

Correct Answer: Option C


Explanation:
Proteomics is the large-scale study of proteins, which are essential parts of all living organisms.

Question #9 Report Error
Which company developed the 'Starlink' satellite internet constellation?
A. Blue Origin
B. SpaceX
C. Virgin Galactic
D. Boeing

Correct Answer: Option B


Explanation:
SpaceX, founded by Elon Musk, operates the Starlink satellite network.

Question #10 Report Error
What is a 'quantum computer' capable of doing much faster than a classical computer?
A. Storing large amounts of video data
B. Solving complex mathematical problems
C. Displaying high-resolution images
D. Sending emails

Correct Answer: Option B


Explanation:
Quantum computers use qubits to perform specific complex calculations, like cryptography or molecular modeling, at exponential speeds.