Which is the deepest drilled hole ever made by humans? MCQ with Answer and Explanation

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Which is the deepest drilled hole ever made by humans?

A. Deep Earth Project

B. Mariana Project

C. Kola Superdeep Borehole

D. Mohole Project

Answer: Option C

Solution (By JKSSB Mock Tests)

The Kola Superdeep Borehole in Russia reached a depth of over 12 km, making it the deepest artificial point on Earth.

This question belongs to: Geography GK Physical Geography

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Which latitude receives direct sunlight on 22 December?

A. Tropic of Cancer

B. Equator

C. Arctic Circle

D. Tropic of Capricorn

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Correct Answer: Option D

Explanation:
On 22 December, the Sun's vertical rays fall on the Tropic of Capricorn.

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Question #2

Which atmospheric phenomenon causes stars to twinkle?

A. Reflection

B. Dispersion

C. Refraction

D. Diffraction

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Correct Answer: Option C

Explanation:
Stars appear to twinkle because their light is refracted by layers of Earth's atmosphere.

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Question #3

A V-shaped valley is mainly formed by:

A. Winds

B. Rivers

C. Glaciers

D. Sea waves

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Correct Answer: Option B

Explanation:
Young rivers erode vertically, creating V-shaped valleys.

This question belongs to: Geography GK Physical Geography

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