Class IX

The number of electrons in the outermost shell in the atom of an inert element is
  1. 0
  2. 1
  3. 2
  4. 8
Name the Indian Philospher who "the smallest indivisible particles of matter" as Parmanu
  1. Aryabhatt
  2. Democritus
  3. Maharishi Kanad
  4. Pakudha Katyayama
Formula for Magnesium Chloride is:
  1. MgCl
  2. Mg₂Cl
  3. Mg₂Cl
  4. MgCl₄
Which one of the following will have the maximum charge/mass ratio?
  1. Proton
  2. Neutron
  3. Electron
  4. α-particle
Who laid the foundation of laws of Chemical Combination:
  1. Proust
  2. Dalton
  3. Lavoisier
  4. Democritus
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