Which of the following is an isotope of hydrogen? MCQ with Answer and Explanation

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Which of the following is an isotope of hydrogen?

A. Protium only

B. Tritium

C. All of these

D. Deuterium

Answer: Option C

Solution (By JKSSB Mock Tests)

Protium (¹H), Deuterium (²H), Tritium (³H) are all isotopes of hydrogen, differing in neutron number.

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Question #1

The weight of a body at Earth's centre is

A. Same as surface

B. Maximum

C. Half of surface

D. Zero

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Correct Answer: Option D

Explanation:
g=0 at centre, so weight zero.

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Question #2

The unit of magnetic flux is

A. Tesla

B. Farad

C. Henry

D. Weber

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Correct Answer: Option D

Explanation:
Weber (Wb) = T m².

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Question #3

A radioactive nucleus emits a beta particle. Its mass number

A. Decreases by 2

B. Increases by 1

C. Remains unchanged

D. Decreases by 1

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Correct Answer: Option C

Explanation:
β⁻ decay: n → p + e⁻, so A unchanged, Z increases by 1.

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