Which element has the atomic number 1? MCQ with Answer and Explanation

Which element has the atomic number 1?
A. Oxygen
B. Carbon
C. Hydrogen
D. Helium
Answer: Option C
Solution (By JKExamLibrary)
Hydrogen is the lightest element and sits at the first position in the periodic table.

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The first Indian woman in space was:
A. None
B. Kalpana Chawla
C. Sunita Williams
D. Tessy Thomas

Correct Answer: Option B


Explanation:
Kalpana Chawla flew on STS-87 in 1997.

Question #2 Report Error
ISRO's Aditya-L1 mission is dedicated to the study of:
A. Moon
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C. The Sun
D. Mars

Correct Answer: Option C


Explanation:
Aditya-L1 is India's first solar observatory mission placed at Lagrange Point 1.

Question #3 Report Error
What is a 'quantum computer' capable of doing much faster than a classical computer?
A. Sending emails
B. Displaying high-resolution images
C. Storing large amounts of video data
D. Solving complex mathematical problems

Correct Answer: Option D


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