Related Questions

  1. Germanium of very high purity is obtained by
  2. 20 g of a non-volatile solute is added to 500 g of solvent. Freezing point
  3. A helium, molecule is two times heavier than a hydrogen molecule at 298 K
  4. Activated charcoal is used to remove colouring matter from pure substances.
  5. On heating sodium metal in dry ammonia, the compound formed is