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Q:

The Ozone layer is present in which atmospheric layer?

A) Lithosphere B) Ionosphere
C) Stratosphere D) Biosphere
 
Answer & Explanation Answer: C) Stratosphere

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Filed Under: General Science
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Q:

Which one of the following statements is not correct?

A) The response of the ear to sound of increasing intensity is approximately logarithmic. B) The sensitivity of the human ear does not vary with the frequency of the sound.
C) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave. D) Longitudinal waves can travel in all media-solids, liquids and gases.
 
Answer & Explanation Answer: B) The sensitivity of the human ear does not vary with the frequency of the sound.

Explanation:

The human ear can respond to minute pressure variations inthe air if they are in the audible frequency range, roughly 20 Hz -20 kHz. In fact, tests conducted show an increased sensitivity in the 3000 Hz range which is the optimal amplification frequency in the human ear. So, the sensitivity of the human ear varies with the frequency of the sound.

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Filed Under: Physics
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Q:

'Gallon' is commonly used

A) To refer to speed B) To refer to a container
C) As a measure of volume D) To express containers in terms of barrel
 
Answer & Explanation Answer: C) As a measure of volume

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Filed Under: Physics
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Q:

Which among the following is not a characteristic of oxidation reaction?

A) It involves addition of hydrogen B) It involves addition of oxygen
C) It involves loss of electrons D) 4) It involves addition of electronegative element
 
Answer & Explanation Answer: A) It involves addition of hydrogen

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Filed Under: Chemistry
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Q:

The amount of BaSO4 formed on mixing an aqueous solution of 2.08 gm of BaCl2 and excess of dilute H2SO4 is ___.

(atomic weights : Ba = 137, Cl = 35.5, S = 32, O = 16)

A) 2.33 g B) 2.08 g
C) 23.3 g D) 1.04 g
 
Answer & Explanation Answer: A) 2.33 g

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Filed Under: Chemistry
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Q:

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
P- They never desert us even when all fair weather friends have deserted us.
Q- Books are never failing friends.
R- They dispel the dark clouds of gloom from our minds and increase our happiness if we are already happy.
S- Through the ages, the scriptures and other great books have provided, immeasurable solace to the wounded and strife torn humanity.

A) QRSP B) PRSQ
C) RSPQ D) QPRS
 
Answer & Explanation Answer: D) QPRS

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Filed Under: English
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Q:

_________________ is a drug that makes your heart work more slowly, used for treating high blood pressure.

A) Contraceptive B) Beta­-Blocker
C) Depressant D) Enema
 
Answer & Explanation Answer: B) Beta­-Blocker

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Filed Under: Biology
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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.

Jay posted the video on YouTube.

 

A) The video has been posted on YouTube by Jay. B) The video was posted on YouTube by Jay.
C) The video had been posted on YouTube by Jay. D) The video is posted on YouTube by Jay.
 
Answer & Explanation Answer: B) The video was posted on YouTube by Jay.

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Filed Under: English
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