Questions

Q:

The colour of a thin film is due to

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

Explanation:

In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude. The color bands in thin films are a result of wavelength dependent interference caused by the close spacing of the surfaces of the film.

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Q:

Radiocarbon dating technique is used to estimate the age of

A) fossils B) rocks
C) monuments D) soil
 
Answer & Explanation Answer: A) fossils

Explanation:

Radiocarbon dating also referred to as carbon dating or carbon-14 dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.

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Q:

Which of the following is not true about X­rays?

A) have low penetrating power B) travel with the speed of light
C) Can be reflected or refracted D) can affect photographic plates
 
Answer & Explanation Answer: A) have low penetrating power

Explanation:
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Q:

Which vitamin is required for hair growth?

A) Vitamin C B) Niacin
C) Biotin D) Vitamin D
 
Answer & Explanation Answer: C) Biotin

Explanation:

We require vitamins B & C for hair growth. But Vitamin B such as Vitamin B7 or Biotin is required for the growth of hair.

which_vitamin_is_required_for_hair_growth1555392370.jpg image

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Q:

"Christ the Redeemer" is located in which among the following places?

A) Salvador B) Porto Alegre
C) Rio De Janeiro D) Brasilia
 
Answer & Explanation Answer: C) Rio De Janeiro

Explanation:

"Christ the Redeemer" is located in Rio De Janeiro, Brazil. 

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Q:

Improve the bracketed part of the sentence.
Shouts of the crowd cheering the home team now (stuff) the air.

A) fill B) occupy
C) infest D) no improvement
 
Answer & Explanation Answer: A) fill

Explanation:
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Q:

What kind of weather would an occluded front likely bring?

A) cool air B) warm air
C) precipitation D) None of the above
 
Answer & Explanation Answer: C) precipitation

Explanation:

An occluded front is a type of weather front formed in the process of cyclogenesis when a cold front is overtaken a warm front. When this happens, the warm air is separated from the cyclone center at the Earth's surface.

 

An occluded front likely bring much precipitation kind of weather.

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Q:

India's first 'Fulldome 3D Digital Theatre' inaugurated in?

A) Hyderabad B) Kolkata
C) Vizag D) Pune
 
Answer & Explanation Answer: B) Kolkata

Explanation:

India's first 'Fulldome 3D Digital Theatre' was inaugurated in Kolkata.

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