Which gas is used in balloons? MCQ with Answer and Explanation

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Which gas is used in balloons?

A. Oxygen

B. Nitrogen

C. Helium

D. Carbon dioxide

Answer: Option C

Solution (By JKSSB Mock Tests)

Helium is lighter than air and non-flammable, making it safe for balloons.

This question belongs to: Static General Knowledge Science and Technology

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Question #1

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Which scientist is known for the discovery of penicillin?

A. Edward Jenner

B. Robert Koch

C. Louis Pasteur

D. Alexander Fleming

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Correct Answer: Option D

Explanation:
Alexander Fleming discovered penicillin.

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Question #2

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The International Space Station is a collaboration of:

A. China only

B. USA and Russia

C. ISRO only

D. Multiple space agencies

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Correct Answer: Option D

Explanation:
It involves NASA, Roscosmos, ESA, JAXA, and CSA.

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Question #3

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ISRO's Aditya-L1 mission is dedicated to the study of:

A. Venus

B. The Sun

C. Moon

D. Mars

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Correct Answer: Option B

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

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