Question Detail

The most abundant rare gas in the atmosphere is ?

  • He
  • Ne
  • Ar
  • Xe
Similar Questions :

1. Acid rain is due to air pollution by ?

  • Carbon dioxide
  • Carbon monoxide
  • Methane
  • Nitrous oxide and Sulphur dioxide

2. pH of water is

  • 5
  • 6
  • 7
  • 8

3. Enzymes are

  • Fatty acids
  • Carbohydrates
  • Nucleic acids
  • Proteins

4. The term PVC used in the plastic industry stands for

  • polyvinyl chloride
  • polyvinyl carbobate
  • phosphor vanadiu chloride
  • phosphavinyl chloride

5. The ejection of electrons when a metal surface is irradiated is known as

  • Black body radiation
  • Photoelectric effect
  • Zeeman effect
  • Atomic spectrum
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