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Q:

Neutron was discovered by

A) J.J.Thomson B) Chadwick
C) Rrutherford D) Priestley
 
Answer & Explanation Answer: B) Chadwick

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Filed Under: Chemistry

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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Filed Under: Chemistry

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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Filed Under: Chemistry

Q:

A pure substance can only be

A) Compound B) an element
C) an element or a compound D) a heterogeneous mixture
 
Answer & Explanation Answer: C) an element or a compound

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Filed Under: Chemistry

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:

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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Filed Under: Physics

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

Q:

One astronomical unit is the average distance between

A) Earth and the Sun B) Earth and the Moon
C) Jupiter and the Sun D) Pluto and the Sun
 
Answer & Explanation Answer: A) Earth and the Sun

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Filed Under: Physics