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Q:

Methane contributes towards global warming so it is called a _________________ gas.

 

A) poisonous B) carcinogenic
C) infectious D) greenhouse

Answer:   D) greenhouse



Explanation:
Subject: Chemistry
Exam Prep: Bank Exams
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Of the following radiations, the most easily stopped by air

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C) gamma -rays D) x - rays
 
Answer & Explanation Answer: A) alpha - rays

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Gamma rays are

A) high energy electrons B) low energy electrons
C) high energy electromagnetic D) high energy positrons waves
 
Answer & Explanation Answer: C) high energy electromagnetic

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A particle which is similar to electron is

A) positron B) beta particle
C) photon D) mason
 
Answer & Explanation Answer: B) beta particle

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A particle which is four times in mass and two times in charge that of proton is

A) helium atom B) an alpha particle
C) deuteron D) tritium
 
Answer & Explanation Answer: B) an alpha particle

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Electromagnetic radiation with maximum wavelength is

A) ultraviolet B) radio waves
C) x-rays D) infrared
 
Answer & Explanation Answer: B) radio waves

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Neutrino has

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Answer & Explanation Answer: B) charge 0, mas 0

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Discovery of the nucleus of an atom was due to the experiment carried out by

A) Bohr B) Rutherford
C) Moseley D) Thomson
 
Answer & Explanation Answer: B) Rutherford

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The charge on positron is equal to the charge on

A) proton B) electron
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Answer & Explanation Answer: A) proton

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