General Knowledge Questions

Q:

In which ecosystem grassland is included?

A) Terrestrial B) Marine
C) Artificial D) Fresh water
 
Answer & Explanation Answer: A) Terrestrial

Explanation:

Grasslands are found in most ecoregions of the Earth.

For example, there are five terrestrial ecoregion classifications of the temperate grasslands, savannas, and shrublands ecosystem, which is one of eight terrestrial ecozones of the Earth's surface.

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Filed Under: World Geography
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Q:

Cryogenic Engines find applications in

A) Frost - Free refrigerators B) Sub-marine propulsion
C) Researches in superconductivity D) Rocket technology
 
Answer & Explanation Answer: D) Rocket technology

Explanation:

Cryogenic Engines find applications in Rocket technology. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.

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Filed Under: Physics
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Q:

Original name of Mumtaj Mahal was

A) Mihr-un-Nisa B) Jagat Gosami
C) Arjumand Banu D) Man Bai
 
Answer & Explanation Answer: C) Arjumand Banu

Explanation:
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Filed Under: Indian History

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Q:

Pakistan which rejoined the commonwealth, had pulled itself out it in the year

A) 1972 B) 1975
C) 1978 D) 1981
 
Answer & Explanation Answer: A) 1972

Explanation:
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Filed Under: World Organisations

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Q:

Where was the third Buddhist council held

A) Vatsa B) Pataliputra
C) Kosambi D) Kashmir
 
Answer & Explanation Answer: B) Pataliputra

Explanation:
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Filed Under: Indian History

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Q:

Metals are good conductors of electricity because

A) The atoms are lightly packed B) They contain free electrons
C) They have high melting point D) All the above
 
Answer & Explanation Answer: B) They contain free electrons

Explanation:

Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity.

Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive.

 

For example, copper is used for electrical wiring because it is a good conductor of electricity.

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Filed Under: Physics
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Q:

Oxidation Number of 'S' in H2SO4?

A) +6 B) +2
C) -6 D) -2
 
Answer & Explanation Answer: A) +6

Explanation:

In H2SO4,

Hydrogen has a charge of +2, with each hydrogen has +1.

Oxygen has  a charge of -8, with each oxugen has -2.

Total charge = (2 - 8) = -6

Therefore, the Oxidation number of Sulphur S is '+6' because to make the compound stable.

 

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Filed Under: Chemistry
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Q:

Power Point presentation is a collection of

A) Outlines B) Slides and Handouts
C) Speaker’s notes D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Power Point presentation is a collection of Slides and Handouts, Outlines and Speaker’s notes.

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