Questions

Q:

The yellow colour of human urine is due to

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

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Filed Under: Biology
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Q:

What is the function of guard cells of stomata?

A) Opening of stomata only B) Closing of stomata only
C) Both opening and closing of stomata D) Neither opening nor closing of stomata
 
Answer & Explanation Answer: C) Both opening and closing of stomata

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Filed Under: Biology
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Q:

In which market form, a market or an industry is dominated by a single seller?

A) Oligopoly B) Monopoly
C) Duopoly D) Monopolistic Competition
 
Answer & Explanation Answer: B) Monopoly

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Filed Under: Indian Economy
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Q:

Which of the following is a major river in Bangladesh which is also the main distributary of the Ganges?

A) Gandak B) Kosi
C) Gomati D) Padma
 
Answer & Explanation Answer: D) Padma

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Filed Under: Indian Geography
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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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Filed Under: Chemistry
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Q:

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because ________

A) Mercury is a metal B) Density of mercury is greater than that of water
C) Cohesion of mercury is greater than its adhesion with glass D) Cohesion of water is greater than its adhesion with glass
 
Answer & Explanation Answer: C) Cohesion of mercury is greater than its adhesion with glass

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Filed Under: Chemistry
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Q:

Electric tram was invented by?

A) Fyodor Pirotsky B) Arthur Pitney
C) Fritz Pfleumer D) Stephen Perry
 
Answer & Explanation Answer: A) Fyodor Pirotsky

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Filed Under: Inventions
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Q:

To whom the Nobel Prize in Physiology or Medicine 2016 was awarded?

A) David J. Thouless B) Yoshinori Ohsumi
C) J. Michael Kosterlitz D) Sir J. Fraser Stoddart
 
Answer & Explanation Answer: B) Yoshinori Ohsumi

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Filed Under: Honours and Awards
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