Q:

What is the atomicity of Phosphorous?

A) Di-atomic	B) Poly-atomic
C) Tetra-atomic	D) Mono-atomic

Answer & Explanation Answer: C) Tetra-atomic

Explanation:

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Q:

Blocking in experimental design is useful because it

A) keeps the experimenter from knowing which subjects are in the treatment group.	B) prevents response bias from entering into the experiment.
C) gives the quarterback enough time to throw the ball.	D) controls for multiple variables in an experiment.

Answer & Explanation Answer: D) controls for multiple variables in an experiment.

Explanation:

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Q:

If a body is whirled in a circle, then the work done on it ___.

A) is zero	B) is positive
C) cannot be determined	D) is negative

Answer & Explanation Answer: A) is zero

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Q:

What is the heat generated (in J) in a heating element of resistance 800 Ω when a current of 0.2 A passes through it for 40 seconds?

A) 6400	B) 1280
C) 640	D) 3200

Answer & Explanation Answer: B) 1280

Explanation:

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Q:

A unit of power is called a

A) Joule	B) Pascal
C) Newton	D) Watt

Answer & Explanation Answer: B) Pascal

Explanation:

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Q:

Boiling point of water is ___.

A) 210 deg F	B) 212 deg F
C) 214 deg F	D) 208 deg F

Answer & Explanation Answer: B) 212 deg F

Explanation:

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Q:

A solar eclipse occurs when

A) moon comes in the middle of sun and earth	B) sun comes in the middle of moon and earth
C) earth comes in the middle of moon and sun	D) All of the above

Answer & Explanation Answer: A) moon comes in the middle of sun and earth

Explanation:

A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. Solar eclipses happen when the New Moon comes between the Sun and Earth and blocks out the Sun's rays.

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Q:

What does the kinetic energy (KE) of a moving body depend upon?

A) Mass & its position	B) Weight & its position
C) Mass & acceleration	D) Mass & velocity

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