Questions

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:

Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.

 


Most economists in the United States seem captivated by the spell of the free market. Consequently, nothing seems good or normal that does not accord with the requirements of the free market. A price that is determined by the seller or, for that matter (for that matter: so far as that is concerned), established by anyone other than the aggregate of consumers seems pernicious. Accordingly, it requires a major act of will to think of price-fixing (the determination of prices by the seller) as both "normal" and having a valuable economic function. In fact, price-fixing is normal in all industrialized societies because the industrial system itself provides, as an effortless consequence of its own development, the price-fixing that it requires. Modern industrial planning requires and rewards great size. Hence, a comparatively small number of large firms will be competing for the same group of consumers. That each large firm will act with consideration of its own needs and thus avoid selling its products for more than its competitors charge is commonly recognized by advocates of free-market economic theories. But each large firm will also act with full consideration of the needs that it has in common with the other large firms competing for the same customers.

 

A major act of will will bring about price-fixing that will be seen as -

 

A) effective and productive B) constructive and practical
C) normal and having valuable economic function D) systematic and relevant
 
Answer & Explanation Answer: C) normal and having valuable economic function

Explanation:
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Filed Under: English
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Q:

Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.

 


In short, to write a good letter you must approach the job in the lightest and most casual way. You must be personal, not abstract. You must not say, 'This is too small a thing to put down'. You must say, 'This is just the sort of small thing we talk about at home. If I tell them this they will see me, as it were they'll hear my voice, they'll know what I'm talking about'. That is the purpose of a letter. Carlyle had the trick to perfection. He is writing from Scotsbrig to his brother Alec in Canada and he begins talking about his mother. Good old Mother, he says, 'she is even now sitting at my back, trying at another table to write you a small word with her own hand; the first time she has tried such a thing for a year past. It is Saturday night, after dark; we are in the east room in a hard, dry evening with a bright fire to our two selves; Jenny and her Barns are 'scouring up things' in the other end of the house; and below stairs the winter operations of the farm go on, in a subdued tone; you can conceive the scene! How simple it is and yet how perfect. Can not you see Alec reading it in his far-off home and his eyes moistening at the picture of his old mother sitting and writing her last message to him on earth?

 

'Scouring up things' means ________.

 

A) cleaning pans with a small ball of wire or plastic B) to search a place thoroughly in order to find something
C) to put something in liquid for a time so that it becomes completely wet D) writing something quickly and carelessly
 
Answer & Explanation Answer: B) to search a place thoroughly in order to find something

Explanation:
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Filed Under: English
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Q:

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

People may see, and hear, and feel all their lives without ____________ learning the nature of things they see. But reason is the mind's eye, and enables us to see why things are, and when and how events may be made to happen ___________ not to happen. The logician endeavours to ____________ exactly what this reason is which makes the power of men. We all, as I have said, must reason well or ill, but logic is the science of reasoning and enables us to distinguish ______________ the good reasoning which leads to truth, and the bad reasoning which every day betrays people into error _________ misfortune.

 

us to distinguish ______________ the good reasoning 

 

A) in B) within
C) between D) amidst
 
Answer & Explanation Answer: C) between

Explanation:
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Filed Under: English
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Q:

Bengali is the official language of _________.

A) Uttarakhand B) Tripura
C) Kerala D) Chhattisgarh
 
Answer & Explanation Answer: B) Tripura

Explanation:
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Filed Under: Indian Geography
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Q:

Carotene in fruits and vegetables gives it which color?

A) Green B) Pink
C) Orange D) Blue
 
Answer & Explanation Answer: C) Orange

Explanation:
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Filed Under: Biology
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Q:

The yellow colour of human urine is due to

A) Bile Salts B) Cholesterol
C) Lymph D) Urochrome
 
Answer & Explanation Answer: D) Urochrome

Explanation:
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Filed Under: Biology
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Q:

Earth-worms belongs to the phylum

A) Protozoa B) Cnidaria
C) Annelida D) Mollusca
 
Answer & Explanation Answer: C) Annelida

Explanation:
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