The gas predominantly responsible for global warming is

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RRB TA Exam (Malda) 2008 click here to view all questions

The gas predominantly responsible for global warming is

ACarbon dioxide

B Carbon monoxide

CNitrous oxide

DNitrogen peroxide

Akilesh Kharvi ? Jun 13 '2017 at 20:12

Anwer is Carbon dioxide

Explanation:

Carbon dioxide (Co2) is predominantly responsible for Global warming. 72% of the totally emitted greenhouse gases is carbon dioxide.

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Which from the following rivers does not originate in Indian territory?

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Which from the following rivers does not originate in Indian territory?

A Chenab

B Brahmaputra

C Ravi

D Mahanadi

Akilesh Kharvi ? Jun 11 '2017 at 21:47

Answer is Brahmaputra

 

Explanation:

Brahmaputra river originates from Tibbet as per wikipedia. 

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The speed of light with the rise in the temperature of the medium.....

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The speed of light with the rise in the temperature of the medium.....

ARemains unaltered

BDecreases

CIncreases

DDrops sharply

rajesh ? Jun 11 '2017 at 20:32

Answer is  Increases

Explanation:

The speed of light remains unaltered with the changes in temperature and it is \(3 \times 10^8\)m/sec in vacuum. Howerer, the speed of light differs in different mediums (different refractive indices) as follows:

\(\lambda =\frac{c} { \nu}\)

Where C = speed of light in vacuum and \( \nu\) is refractive index of medium 

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Which of the following is called the roof of the world?

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RRB Junior Clerk Exam (Allahabad) 2009 click here to view all questions

Which of the following is called the roof of the world?

APamir Plateau

BSouth Indian Plateau

CTibbetan Plateau

DNone of these

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Fuse wire is made at

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Fuse wire is made at

Acopper and iron

BtIn and lead

Ccopper and lead

Dsilver

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When sound waves are propagated, they transfer

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When sound waves are propagated, they transfer

Amass

Benergy

Cpotential

Dmomentum

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Which of the following is the best conductor of electricity?

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Which of the following is the best conductor of electricity?

AAluminium

BCopper

CIron

DSilver

Nithin K ? Apr 22 '2018 at 19:41

Correct Answer: D [Silver]

Explanation:

silver is the good conductor of electricity. when compared to remaining 3 metals , as silver having more number of free electrons in its valency shell.

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