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Q:

The discovery of neutron became very late because

A) it is present in nucleus B) it is a fundamental particle
C) it does not move D) it does not carry any charge
 
Answer & Explanation Answer: D) it does not carry any charge

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Filed Under: Chemistry

Q:

Cathode rays have

A) mass only B) charge only
C) no mass and no charge D) mass and charge both
 
Answer & Explanation Answer: D) mass and charge both

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Q:

Cathode rays are 

A) electromagnetic wave B) stream of alpha particle
C) stream of electrons D) radiations
 
Answer & Explanation Answer: C) stream of electrons

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Q:

The most abundant metal in earth crust is

A) Iron B) magnesium
C) calcium D) aluminium
 
Answer & Explanation Answer: D) aluminium

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Q:

The credit for the discovery of transuranic element goes to

A) Hahn B) Rutherford
C) Seaborg D) Curie
 
Answer & Explanation Answer: C) Seaborg

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Q:

Who is the father of modern chemistry?

A) Priestley B) Lavoisier
C) Dalton D) Mendeleeff
 
Answer & Explanation Answer: B) Lavoisier

Explanation:

Antoine-Laurent de Lavoisier, a french chemist is considered as the "Father of Modern Chemistry."

who_is_the_father_of_modern_chemistry1538547478.jpg image

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Q:

Earlist thermometerr was developed by

A) Celsius B) Fahrenheit
C) Kelvin D) Galileo
 
Answer & Explanation Answer: D) Galileo

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Filed Under: Physics

Q:

Heat is associated with

A) K.E of random motion of molecules B) K.E of orderly motion of molecules
C) Total K.E of random and orderly motion of molecules D) None of these
 
Answer & Explanation Answer: A) K.E of random motion of molecules

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Filed Under: Physics