Questions

Q:

Ozone is concentrated in the

A) Stratosphere B) Troposphere
C) Ionosphere D) Mesosphere
 
Answer & Explanation Answer: A) Stratosphere

Explanation:

Most of the ozone in the atmosphere is found in the layer of stratosphere, which begins about 10.16 kilometers (6.10 miles) above Earth's surface and extends up to about 50 kilometers (31 miles) altitude.

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Q:

How many Indian got a place in 100 most influential people in the world list 2017 by Time magazine ?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:

Prime Minister Narendra Modi and Paytm founder Vijay Shekhar Sharma.

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Q:

which term , originally the name of a fanatical sect, is derived from the Arabic description of a consumer of hashish?

Answer

Assassins (from Hashishin)

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Q:

The commercial and marketing arm of ISRO is

A) Antrix Corporation Limited B) ISRO Satelliet Corporation
C) Space Applications Center D) None
 
Answer & Explanation Answer: A) Antrix Corporation Limited

Explanation:
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Q:

The monosaccharides important in nutrition are

A) Glucose B) Galactose
C) Fructose D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

There are 3 monosaccharides important in nutrition. They are Glucose, Galactose and Fructose.

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Q:

Red Data Book contains

A) Rare minerals B) Vanishing rivers
C) Red pandas D) Rare plants & animals under threat
 
Answer & Explanation Answer: D) Rare plants & animals under threat

Explanation:

It is a public document used to keep information about rare plants, animals, fungi etc... that exist within the territory. It is a Russian Federation Book.

Red_data_book_contains1561550192.jpg image

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Q:

Which metal is the best conductor of heat?

A) Silver B) Gold
C) Copper D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Silver is the best conductor of both heat and electricity among metals with a thermal conduction value of about 430 W/(mK).

Gold and copper both come respectably close to silver.

 

Copper being significantly less costly it is often chosen over silver in many applications.

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Q:

A wire of copper having length I and area of cross-section A is taken and a current / is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

A) P B) < P
C) > P D) 2P
 
Answer & Explanation Answer: C) > P

Explanation:

Aluminum has a resistivity varying from 2.65 to 2.82 × 10−8 Ω m.The resistivity of copper is generally given as: 1.72 x 10-8 Ω.m.So, since resistivity of aluminium is higher than that of copper, so Power dissipated will be greater than P. this is because rest of the factors (l, A and i) are constant.

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