Questions

Q:

Which one of the following statements is correct?

A) The oxidation number for hydrogen is always zero. B) The oxidation number for hydrogen is always + 1.
C) The oxidation number for hydrogen is always -1. D) Hydrogen can have more than one oxidation number.
 
Answer & Explanation Answer: D) Hydrogen can have more than one oxidation number.

Explanation:

Hydrogen has two possible oxidation numbers: +1 and -1.

-1 in case of hydrides.

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Q:

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best
expresses the same sentence in Indirect/Direct speech.
Pritam said, "These pastries are yummy."

A) Pritam said that those pastries are yummy. B) Pritam said this that those pastries were yummy.
C) Pritam said that those pastries were yummy. D) Pritam said that these pastries are yummy.
 
Answer & Explanation Answer: B) Pritam said this that those pastries were yummy.

Explanation:
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Q:

Find arc elasticity of demand, if quantity demanded falls from 4600 to 4200 when price of the item is increased from Rs 960 to Rs 1000?

A) -2.23 B) -­2.09
C) 2.23 D) 2.09
 
Answer & Explanation Answer: A) -2.23

Explanation:
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Q:

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
Don’t loiter _____ the corridor.

A) around B) off
C) of D) at
 
Answer & Explanation Answer: A) around

Explanation:
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Q:

In the following questions, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
Language, they say, is the _____ through which human beings perceive the world. If so, English is perhaps the most _____ lens through which to see animals. It has _____ a cross eyed view of birds, beasts, fish and fowl. The very word “animal” can _____ the brutish and the sensual. Animal _____ imply baseness and vulgarity.
Animal _____ imply baseness and vulgarity.

A) breeding B) gestures
C) instincts D) species
 
Answer & Explanation Answer: C) instincts

Explanation:
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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.

Books are our ______ friends. They are our guides. We can learn everything from them. The books contain all the great ______ of the world's leaders and we can learn them by reading the books. The books help us find ______ to our questions. The books never fail us. We should read as ______ books as we can. But all books are not good. So we should ______ only good books.

the great ______ of our world.

A) feel B) thoughts
C) idle D) money
 
Answer & Explanation Answer: B) thoughts

Explanation:
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Q:

___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

 

 

A) Sublimation B) Evaporation
C) Condensation D) Liquidation
 
Answer & Explanation Answer: A) Sublimation

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Q:

Which State in India is the highest producer of raw silk?

A) Kerala B) Andhra Pradesh
C) Karnataka D) Maharashtra
 
Answer & Explanation Answer: C) Karnataka

Explanation:
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