Questions

Q:

Why is weightlessness experienced while orbiting the earth in space ships ?

A) Inertia B) Acceleration
C) Zero gravity D) Orbital motion
 
Answer & Explanation Answer: C) Zero gravity

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Q:

Terminal velocity ________.

A) first increases before decreasing B) is constant
C) first decreases before increasing D) always keeps on increasing
 
Answer & Explanation Answer: B) is constant

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Q:

Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be

A) g/4 B) g
C) 2g D) g/2
 
Answer & Explanation Answer: C) 2g

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Q:

Which of the following planet is also known as 'Earth's twin'?

A) Mercury B) Venus
C) Jupiter D) Saturn
 
Answer & Explanation Answer: B) Venus

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Q:

If water smells bad, then that odour can be removed by adding

A) alum B) bleach
C) activated carbon D) deactivated nitrogen
 
Answer & Explanation Answer: C) activated carbon

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Q:

Which of the following is NOT a metamorphic rock?

A) Slate B) Schist
C) Diorite D) Phyllite
 
Answer & Explanation Answer: C) Diorite

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Q:

Pneumonia affects which of the following organs of human body?

A) Kidneys B) Lungs
C) Throat D) Liver
 
Answer & Explanation Answer: B) Lungs

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Q:

Which of the following Phylum are also called flatworms?

A) Mollusca B) Chordata
C) Ctenophora D) Platyhelminthes
 
Answer & Explanation Answer: D) Platyhelminthes

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