Questions

Q:

Who was the author of the book, Plagues and Peoples?

A) W.L. Thomas B) Rachel Carson
C) David Cannadine D) William H.McNeill
 
Answer & Explanation Answer: D) William H.McNeill

Explanation:

Plagues and Peoples is a book on epidemiological history by William Hardy McNeill published in New York City in 1976. It was a critical and popular success, offering a radically new interpretation of the extraordinary impact of infectious disease on cultures as a means of enemy attack. The book ranges from examining the effects of smallpox in Mexico, the bubonic plague in China, to the typhoid epidemic in Europe.

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Q:

Which one of the following air pollutants combines with the haemoglobin of human blood and reduces its oxygen-carrying capacity, leading to suffocation and may cause even death?

A) Chlorofluorocarbon B) Fly ash
C) Carbon monoxide D) Sulphur dioxide
 
Answer & Explanation Answer: C) Carbon monoxide

Explanation:

Carbon monoxide (CO) is very dangerous because it binds with the haemoglobin more efficiently than oxygen does. It "hogs the seats" so that oxygen can't get a ride. And those CO molecules keep riding around, never giving their seats up to the oxygen. This means there is no way to get oxygen to the brain, heart, or other cells and those cells start to die. And finally, it leads to suffocation and even death of a person.

 

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Q:

__________ caves are a network of sculpted caves located in Mumbai Harbour.

A) Ajanta B) Ellora
C) Elephanta D) Badami
 
Answer & Explanation Answer: C) Elephanta

Explanation:
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Q:

Major portion of the earth's crust is mainly constituted by

A) Oxygen and Iron B) Oxygen and Silicon
C) Silicon and Iron D) Silicon and Aluminium
 
Answer & Explanation Answer: B) Oxygen and Silicon

Explanation:
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Q:

Heat flows as a result of difference of _____.

A) Temperature B) Density
C) mass D) Volume
 
Answer & Explanation Answer: A) Temperature

Explanation:
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Filed Under: Physics
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Q:

Choose the most appropriate answer:Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation?

A) Scattering B) Diffraction
C) Interference D) Polarization
 
Answer & Explanation Answer: A) Scattering

Explanation:

The Nobel Prize in Physics 1930 was awarded to Sir Chandrasekhara Venkata Raman "for his work on the scattering of light and for the discovery of the effect named after him".

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Q:

Which of the following can be beaten and converted into thin sheets?

A) Zinc B) Phosphorus
C) Sulphur D) Oxygen
 
Answer & Explanation Answer: A) Zinc

Explanation:
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Filed Under: Chemistry
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Q:

Which enzyme is present in all members of the animal kingdom except Protozoa?

A) Insulin B) Pepsin
C) Renin D) Amylase
 
Answer & Explanation Answer: D) Amylase

Explanation:
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