2
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
Q:

Of the following radiations, the most easily stopped by air

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

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2 4269
Q:

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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1 2529
Q:

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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10 6653
Q:

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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3 3874
Q:

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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42 10269
Q:

Neutrino has

A) charge +1, mass 1 B) charge 0, mas 0
C) charge -1,mass 1 D) charge 0, mass 1
 
Answer & Explanation Answer: B) charge 0, mas 0

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5 3980
Q:

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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8 5961
Q:

The charge on positron is equal to the charge on

A) proton B) electron
C) alpha- particle D) neutron
 
Answer & Explanation Answer: A) proton

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19 8302