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Everyday Science Mcqs

"Each electron in an atom must have its own unique set of quantum numbers" is a statement of_______________

  • (A)  Aufbau principle
  • (B)  Pauli exclusion principle
  • (C)  Hund's rule
  • (D)  Periodic law
Submitted By :Ali Uppal


Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy

  • (A)  radio, visible, infrared, ultraviolet, x-ray, gamma ray
  • (B)  radio, infrared, visible, x-ray, gamma ray, ultraviolet
  • (C)  visible, radio, infrared, ultraviolet, x-ray, gamma ray
  • (D)  radio, infrared, visible, ultraviolet, x-ray, gamma ray
Submitted By :Ali Uppal


Which of the following has the largest wavelength

  • (A)  visible light
  • (B)  x-rays
  • (C)  infrared light
  • (D)  ultraviolet radiation
Submitted By :Ali Uppal


Which of the following has the highest energy

  • (A)  gamma rays
  • (B)  X-rays
  • (C)  Ultra-violet radiation
  • (D)  radio waves
Submitted By :Ali Uppal


All of the following are electromagnetic radiations except__________

  • (A)  Red light
  • (B)  Sound waves
  • (C)  X-Rays
  • (D)  Photon
Submitted By :Ali Uppal


Second ionization energy:

  • (A)  is always less than first ionization energy
  • (B)  is always greater than first ionization energy
  • (C)  is equal to the first ionization energy
  • (D)  may be greater or less than the first ionization energy depending on the nature of the element
Submitted By :Ali Uppal


Nuclear radiation is emitted by those elements whose:

  • (A)  molecules are stable
  • (B)  molecules are unstable
  • (C)  nuclei are stable
  • (D)  nuclei are unstable
Submitted By :Ali Uppal


Color of the glow produced in the discharge tube:

  • (A)  depends on the pressure in the discharge tube
  • (B)  depends on the metal used as cathode
  • (C)  depends on the gas used in the discharge tube
  • (D)  does not depend on the nature of the gas used in the discharge tube
Submitted By :Ali Uppal


Covalent network crystals have_____________

  • (A)  higher melting point then molecular crystals
  • (B)  lower melting point then molecular crystals
  • (C)  discrete molecules linked by Van der waals forces
  • (D)  hydrogen bonding
Submitted By :Ali Uppal


The increasing vapor pressure caused by heating a liquid is due to___________

  • (A)  increase inter-molecular interactions
  • (B)  increasing potential energy of molecules
  • (C)  increasing kinetic energy of molecules
  • (D)  decreasing surface tension
Submitted By :Ali Uppal