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The most electropositive elements among the following is :

  • Cs
  • Ca
  • Na
  • Br

Answer: Option A

Similar Questions :

1. 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

2. Rare gases are

  • mono atomic
  • di atomic
  • tri atomic
  • None of above

Answer: Option A

Explanation:

Rare gases are mono atomic.

3. Chemical used in photography is

  • sodium sulphate
  • sodium sulphite
  • sodium thiosulphate
  • sodium oxalate

Answer: Option C

4. What is the chemical name of table salt ?

  • Sodium nitrate
  • Ammonium chloride
  • Sodium chloride
  • Calcium chloride

Answer: Option C

5. Nail polish remover contains ?

  • benzene
  • acetic acid
  • acetone
  • petroleum ether

Answer: Option C

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