1. Q141 The electronic configuration of an element is 2, 7. To which group does this element belong :
  2. Q143 In domestic electric circuits, the fuse must be placed in :
  3. Q144 The basic nature of sodium hydroxide is due to the presence of which one of the following ions in the solution.
  4. Q145 The focal length of a mirror is the distance between the____ and the____of the mirror.
  5. Q147 Distinguish between spinal nerve and cranial nerve.
  6. Q148 Which of the following has sweet fruity smell:
  7. Q150 The metal which is liquid at room temperature: