Questions

Q:

Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water 

A) increases to a great extent B) increases slightly
C) decreases slightly D) decreases rapidly
 
Answer & Explanation Answer: C) decreases slightly

Explanation:

Evaporation causing cooling.Here the evaporation is less. Therefore cooling is less.

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Filed Under: Physics

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Q:

Sources of geothermal power are

A) water B) earth's heat
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Geothermal power plants are used in order to generate electricity by the use of geothermal energy (the Earth's internal thermal energy). They essentially work the same as a coal or nuclear power plant, the main difference being the heat source.

geothermal_power1531899280.png image

Geothermal power plants use hydrothermal resources that have both water (hydro) and heat (thermal). Geothermal power plants require high-temperature (300°F to 700°F) hydrothermal resources that come from either dry steam wells or from hot water wells.

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Q:

Solely means

A) exclude B) include
C) only D) rival
 
Answer & Explanation Answer: C) only

Explanation:

Solely means only, simply or merely.

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Filed Under: English
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Q:

Nitrogen Fixation is carried out primarily by

A) Plants B) Humans
C) Consumers D) Bacteria
 
Answer & Explanation Answer: D) Bacteria

Explanation:

The process by which bacteria convert nitrogen gas (N2) into ammonia (NH3) is called Nitrogen Fixation.

 

The conversion of nitrogen from one form to another in the nitrogen cycle is carried out primarily by Nitrogen Fixing Bacteria such as Azotobacter.

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Filed Under: Biology
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Q:

Which statement is NOT true about polymers?

A) Polymers are large molecules composed of small monomeric units B) Polymes are macromolecules
C) Polymers are complex molecules composed of random sequences of atoms D) All the above
 
Answer & Explanation Answer: C) Polymers are complex molecules composed of random sequences of atoms

Explanation:

Polymers are complex molecules composed of random sequences of atoms is the only statement which is not true regarding polymers.

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Filed Under: Chemistry
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Q:

What country did we fight during the Revolutionary War?

A) Pakistan B) United States of America
C) England D) Germany
 
Answer & Explanation Answer: C) England

Explanation:

We fought against England in the Revolutionary War for Independence from the British rule.

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Filed Under: Indian History
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Q:

Which among the following is not correctly matched pair?

A) Pakistan- Field Hockey B) China- Table Tennis
C) USA- Baseball D) None of the above
 
Answer & Explanation Answer: D) None of the above

Explanation:

In all the given options, the countries are correctly matched with their National games.

 

USA - Baseball


Pakistan - Field Hockey


China - Table Tennis.

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Filed Under: General Awareness
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Q:

Which must be true for metamorphism to occur?

A) The parent rock must be in solid form. B) Tons of pressure must be applied.
C) The process must take place underground. D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Metamorphism is the change of minerals or geologic texture in pre-existing rocks, without the protolith melting into liquid magma. The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids.

 

The parent rock must be in solid form. Tons of pressure must be applied for metamorphism to happen. The process must take place underground.

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