Imtiaz Shahid Everyday Science Competitive Exams MCQs

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Everyday Science MCQs Quiz Test With Answers

Q.1: The increasing vapor pressure caused by heating a liquid is due to——?

  1. increase inter-molecular interactions
  2. increasing potential energy of molecules
  3. increasing kinetic energy of molecules
  4. decreasing surface tension

C

Q.2: Covalent network crystals have——-?

  1. higher melting point then molecular crystals
  2. lower melting point then molecular crystals
  3. discrete molecules linked by Van der waals forces
  4. hydrogen bonding

A

Q.3: Color of the glow produced in the discharge tube:

  1. depends on the pressure in the discharge tube
  2. depends on the metal used as cathode
  3. depends on the gas used in the discharge tube
  4. does not depend on the nature of the gas used in the discharge tube

C

Q.4: Nuclear radiation is emitted by those elements whose:

  1. molecules are stable
  2. molecules are unstable
  3. nuclei are stable
  4. nuclei are unstable

D

Q.5: Second ionization energy:

  1. is always less than first ionization energy
  2. is always greater than first ionization energy
  3. is equal to the first ionization energy
  4. may be greater or less than the first ionization energy depending on the nature of the element

B

Q.6: All of the following are electromagnetic radiations except—–?

  1. Red light
  2. Sound waves
  3. X-Rays
  4. Photon

B

Q.7: Which of the following has the highest energy?

  1. gamma rays
  2. X-rays
  3. Ultra-violet radiation
  4. radio waves

A

Q.8: Which of the following has the largest wavelength?

  1. visible light
  2. x-rays
  3. infrared light
  4. ultraviolet radiation

C

Q.9: Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy?

  1. radio, visible, infrared, ultraviolet, x-ray, gamma ray
  2. radio, infrared, visible, x-ray, gamma ray, ultraviolet
  3. visible, radio, infrared, ultraviolet, x-ray, gamma ray
  4. radio, infrared, visible, ultraviolet, x-ray, gamma ray

D

Q.10: “Each electron in an atom must have its own unique set of quantum numbers” is a statement of——–?

  1. Aufbau principle
  2. Pauli exclusion principle
  3. Hund’s rule
  4. Periodic law

B