The chemical behaviour of an atom is determined by its

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RRB ASSISTANT LOCO PILOT (Allahabad) 2010 click here to view all questions

The chemical behaviour of an atom is determined by its

AAtomic mass

BAtomic weight

CAtomic number

DNone of these

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Bitumen is a

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RRB ASSISTANT LOCO PILOT (Allahabad) 2010 click here to view all questions

Bitumen is a

Anatural organic substance

Bsynthetic organic substance

Csemi-synthetic organic substance

DNone of these

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Which of the two metals are mixed in manufacturing stainless steel?

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RRB ASSISTANT LOCO PILOT (Allahabad) 2010 click here to view all questions

Which of the two metals are mixed in manufacturing stainless steel?

AZinc, Chromium

BNickel, Chromium

CChromium, Iron

DNickel, Iron

rahul ? Jan 11 '2020 at 18:46

Correct answer is: Chromium, Iron

Explanation:

Iron, chromium, nickel -- main constituents of stainless steel.

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Which of the following is used as a coolant in nuclear reactors?

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RRB GG Exam (Bhopal) 2009 click here to view all questions

Which of the following is used as a coolant in nuclear reactors?

AHeavy water

BCadmium

CLiquid Sodium

DGraphite

rakesh ? Dec 14 '2019 at 18:43

Correct answer is:Heavy water

Explanation:

A nuclear reactor coolant is a coolant used to remove heat from the nuclear reactor core and transfer it to electrical generators and the environment. Light or heavy water ,Helium and Liquid Sodium can be used as coolant in a nuclear reactor.

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The unit of radioactivity is

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RRB ASM Exam (Bhubaneshwar) 2009 click here to view all questions

The unit of radioactivity is

Amegavolt

Bcurie

Cweber

Dquark

roshan ? Jan 12 '2019 at 21:3

Answer is: B [curie]

Explanation:

On the name of Madam Curie, the discoverer of radioactivity, its unit is kept - curie.

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