Questions

Q:

Cattle quickly swallow grass and store it in their __________.

A) rumen B) esophagus
C) small intestine D) salivary glands
 
Answer & Explanation Answer: A) rumen

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Filed Under: Animals and Birds
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Q:

Which of the following authority is elected on the basis of proportional representation in India?

A) Prime Minister B) President
C) Governor D) Lok Sabha Speaker
 
Answer & Explanation Answer: B) President

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Filed Under: Indian Politics
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Q:

Rectifiers convert _____.

A) high voltage to low voltage B) low voltage to high voltage
C) AC to DC D) DC to AC
 
Answer & Explanation Answer: C) AC to DC

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Filed Under: Physics
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Q:

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

A) 3750 B) 7500
C) 1875 D) 5000
 
Answer & Explanation Answer: A) 3750

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Filed Under: Physics
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Q:

Find the kinetic energy (in J) possessed by a body of mass 10 kg moving with a velocity of 5 m/s.

A) 25 B) 125
C) 62.5 D) 50
 
Answer & Explanation Answer: B) 125

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Filed Under: Physics
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Q:

The radius of curvature of a concave mirror is 30 cm. Following Cartesian Sign Convention, its focal length is expressed as

A) -30 cm B) -15 cm
C) +30 cm D) +15 cm
 
Answer & Explanation Answer: B) -15 cm

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Filed Under: Physics
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Q:

Which among the following is used to generate light, to weld metals?

A) Ethylene B) Acetylene
C) Glycol D) Oxalic acid
 
Answer & Explanation Answer: B) Acetylene

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Filed Under: Chemistry
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Q:

Atomic Number of Hydrogen is _______.

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: D) 1

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Filed Under: Chemistry
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