Navigate

Question Detail

The most abundant rare gas in the atmosphere is ?

  • He
  • Ne
  • Ar
  • Xe

Answer: Option C

Similar Questions :

1. Elements that show the properties of both metals and non metals are called ?

  • metalloids
  • allotropes
  • alloys
  • colloids

Answer: Option A

2. The high reactivity of fluorine is due to ?

  • small size of fluorine atom
  • its high electro negativity
  • availability of d-orbitals
  • strong F - F bond

Answer: Option B

3. The cyclotron is used to

  • accelerating particles
  • separating elements
  • purifying metals
  • making alloys

Answer: Option A

4. Mass number of a nucleus is :

  • the sum of the number of protons and neutrons present in the nucleus
  • always more than the atomic weight
  • always less than its atomic number
  • None of above

Answer: Option A

5. The chemical used as a fixer in photography is ?

  • sodium thiosulphate
  • sodium sulphate
  • borax
  • ammonium sulphate

Answer: Option A

Read more from - Chemistry Questions Answers