Related Questions

  1. The number of unpaired electrons in 1s² 2s² 2p³ is
  2. A solid compound X on heating gives CO₂ and a residue .
  3. Permanent hardness of water is due to the presence of
  4. An organic compound ‘X’ having molecular formula C₅H₁₀O yields phenyl hydrozone
  5. Which of the following group activates the benzene ring most towards electrophili