Q:

Which object converts electricity to light?

A) Solar panels	B) Battery
C) Bulb	D) All the above

Answer & Explanation Answer: C) Bulb

Explanation:

Bulb converts electricity to light whereas solar panel is the device which converts light to electricity.

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Q:

The SI unit of momentum is _____________.

A) kilogram-metre per second	B) kilogram-metre per second
C) kilogram-metre-second	D) kilogram-metre-second squared

Answer & Explanation Answer: A) kilogram-metre per second

Explanation:

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Q:

The instrument used to determine the rotation speed of a shaft is called

A) Speedometer	B) Tachometer
C) Anemometer	D) Chronometer

Answer & Explanation Answer: B) Tachometer

Explanation:

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Q:

What is the duration of the world’s shortest X–ray laser has been successfully created by the scientists?

A) 39 nanoseconds	B) 43 attoseconds
C) 15 picoseconds	D) 57 microseconds

Answer & Explanation Answer: B) 43 attoseconds

Explanation:

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Q:

UNITAR stands for -

A) United Nations Institute for Transport and Agriculture Research	B) United Nations Initiative for Total Agricultural Readiness
C) United Nations Institute for Training and Research	D) United Nations Initiative for Transport Readiness

Answer & Explanation Answer: C) United Nations Institute for Training and Research

Explanation:

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Q:

Which of the following is an example of social facilitation?

A) The Olympic bicycle racer who goes faster when he is racing against a person rather than the clock	B) The bowler who bowls best when he is practicing on his own
C) The football player who practices hard so he can be on the varsity team	D) The tennis player who is frustrated when the crowd yells at her

Answer & Explanation Answer: A) The Olympic bicycle racer who goes faster when he is racing against a person rather than the clock

Explanation:

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Q:

What does ATM stand for

A) Any Time Money	B) Automated Teller Machine
C) Automatic Talking Media	D) Analog Time Machine

Answer & Explanation Answer: B) Automated Teller Machine

Explanation:

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Q:

The name of the space shuttle, which carried the Indian born Kalpana Chawla into space was

A) Columia	B) Challenger
C) Atlantis	D) Endeavour

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