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The most electropositive elements among the following is :

  • Cs
  • Ca
  • Na
  • Br

Answer: Option A

Similar Questions :

1. Who proposed first atomic theory ?

  • E.Rutherford
  • De Broglie
  • John Dalton
  • D.I.Mendeleef

Answer: Option C

2. Which one of the following gas is readily soluble in water at room temperature ?

  • chlorine
  • nitrogen
  • ammonia
  • carbon dioxide

Answer: Option D

3. Washing soda is ?

  • sodium sulphite
  • sodium bicarbonate
  • sodiun carbonate
  • sodium biosulphite

Answer: Option C

4. Conduction band electrons have more mobility than holes because they are

  • experience collision more frequently
  • experience collision less frequently
  • have negative charge
  • need less energy to move them

Answer: Option B

5. Homo nuclear molecules contain ?

  • polar bond
  • covalent bond
  • ionic bond
  • coordinate bond

Answer: Option B

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