General Science - 02

01. Isotopes are separated by:

  • 1Crystallisation
  • 2Sublimation
  • 3Distillation
  • 4Filtration
Answer:- 1
Explanation:-

Solution:
Distillation.

02. In an atomic explosion, enormous energy is released which is due to

  • 1Conversion of chemical energy into heat energy
  • 2Conversion of mechanical energy into nuclear energy
  • 3Conversion of mass into energy
  • 4Conversion of neutrons into protons
Answer:- 1
Explanation:-

Solution:
Conversion of mass into energy.

03. Atoms are composed of:

  • 1Electrons and protons
  • 2Electrons only
  • 3Protons only
  • 4Electrons and Nuclei
Answer:- 1
Explanation:-

Solution:
Electrons and Nuclei.

04. Which of the following is used as a moderator in nuclear reactor?

  • 1Thorium
  • 2Graphite
  • 3Radium
  • 4Ordinary water
Answer:- 1
Explanation:-

Solution:
Ordinary water.

05. Knot is a unit of speed of which of the following?

  • 1Aeroplane
  • 2Light waves
  • 3Ship
  • 4Sound waves
Answer:- 1
Explanation:-

Solution:
Ship.

06. Nautical mile is a unit of distance used in:

  • 1Navigation
  • 2Road mile
  • 3Astronomy
  • 4Measuring the boundaries of a nation
Answer:- 1
Explanation:-

Solution:
Navigation.

07. A chronometer measures:

  • 1Colour contrast
  • 2Sound waves
  • 3Time
  • 4Water waves
Answer:- 1
Explanation:-

Solution:
Time.

08. Kilowatt is a unit to measure:

  • 1Work
  • 2Power
  • 3Electricity
  • 4Current
Answer:- 1
Explanation:-

Solution:
Power.

09. One Joule is equal to

  • 1105 ergs
  • 2103 ergs
  • 3107 ergs
  • 41011 ergs
Answer:- 1
Explanation:-

Solution:
107 ergs.

10. 'Bar' is the unit of

  • 1Temperature
  • 2Heat
  • 3Atmospheric pressure
  • 4Current
Answer:- 1
Explanation:-

Solution:
Atmospheric pressure.

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