Q:

Select the word with the correct spelling.

A) dementia	B) quaterain
C) necrosys	D) frenetec

Answer & Explanation Answer: A) dementia

Explanation:

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Q:

Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is

A) of variable refractive index	B) made up of slabs of different refractive indices
C) homogeneous and transparent	D) inhomogeneous and transparent

Answer & Explanation Answer: C) homogeneous and transparent

Explanation:

In vacuum and in homogeneous, transparent media, such as air, water, and glass, light moves in a straight line. When light encounters a boundary between two different transparent media, some light is reflected and some moves from the first into the second medium.

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Q:

What is an exothermic reaction?

A) Reaction in which heat is released.	B) Reaction in which heat is absorbed.
C) Reaction in which neither heat is released nor absorbed.	D) None

Answer & Explanation Answer: A) Reaction in which heat is released.

Explanation:

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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.

Dark clouds have overcast the evening sky.

A) By the dark clouds the evening sky was overcast.	B) The evening sky has been overcast by the dark clouds.
C) Dark clouds overcastted the evening sky.	D) The sky of the evening was overcasted by dark clouds.

Answer & Explanation Answer: B) The evening sky has been overcast by the dark clouds.

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

The forming of a theory or conjecture without firm evidence

A) Verification	B) Substantiation
C) Speculation	D) Attestation

Answer & Explanation Answer: C) Speculation

Explanation:

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Q:

The least penetrating power ray is

A) Gamma rays	B) Beta rays
C) Alpha rays	D) None of the above

Answer & Explanation Answer: C) Alpha rays

Explanation:

The least penetrating power ray is Alpha rays.

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Q:

What is the unit of the physical quantity "Jerk"?

A) meter second	B) meter per second cube
C) meter per second square	D) meter per second

Answer & Explanation Answer: B) meter per second cube

Explanation:

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Q:

What is the other name of Galileo's law of falling bodies?

A) Law of motion	B) Newton's first law
C) Newton's second law	D) Newton's third law

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