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Q:

The fundamental particles present in equal numbers in neutral atoms are

A) protons and electrons B) neutrons and electrons
C) protons and neutrons D) protons and positrons
 
Answer & Explanation Answer: A) protons and electrons

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Filed Under: Chemistry

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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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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Filed Under: Chemistry
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Q:

SI unit of temperature is

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

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Filed Under: Physics

Q:

Heat energy of an object is

A) the average energy of the molecules of the object B) the total energy of the molecules of the object
C) the average velocity of the molecules of the object D) the average potential energy of the molecules of the object
 
Answer & Explanation Answer: B) the total energy of the molecules of the object

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Q:

Which of the following physical quantities do not have same dimensions

A) Force and Pressure B) Work and Energy
C) Impulse and momentum D) Weight and Force
 
Answer & Explanation Answer: A) Force and Pressure

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Q:

The most suitable unit for expressing nuclear radius is

A) micro B) nanometre
C) fermi D) angstrom
 
Answer & Explanation Answer: C) fermi

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Filed Under: Physics