Questions

Q:

Notepad' is a text editor in which of the following operating systems?

A) Windows B) Google Chrome
C) Mozilla Firefox D) Macintosh
 
Answer & Explanation Answer: A) Windows

Explanation:
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Q:

The minimum short­term natural hazard is __________

A) blizzard B) earthquake
C) volcanic eruption D) bolt of lightning
 
Answer & Explanation Answer: D) bolt of lightning

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Q:

In the Modern Periodic Table, elements are arranged in

A) increasing atomic mass number B) increasing atomic number
C) decreasing atomic mass number D) decreasing atomic number
 
Answer & Explanation Answer: B) increasing atomic number

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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:

Number of Sigma and Pi bonds in benzene, respectively is

A) 12 and 3 B) 3 and 3
C) 6 and 3 D) 9 and 3
 
Answer & Explanation Answer: A) 12 and 3

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Q:

The number of free electrons in the outermost shell of carbon atoms in diamand is

A) zero B) two
C) four D) three
 
Answer & Explanation Answer: A) zero

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Q:

The Lachman test is used to evaluate stability of the

A) Anterior cruciate ligament B) Iliotibial band
C) Pivot shift  D) None
 
Answer & Explanation Answer: A) Anterior cruciate ligament

Explanation:

The Lachman test is used to evaluate stability of the Anterior cruciate ligament.

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Q:

__________ is the interaction in which one species benefits and the other is neither harmed nor benefited.

A) Predation B) Commensalism
C) Competition D) Parasitism
 
Answer & Explanation Answer: B) Commensalism

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