Question

Non-polar molecule having polar bonds is:

• A. phosphorus trichloride (PCl${}_3$)
• B. sulfur dioxide (SO${}_2$)
  
• C. water (H${}_2$O)
• D. hydrogen chloride (HCl)
• E. carbon dioxide (CO${}_2$)
  

Answer 1

The correct option is E carbon dioxide (CO${}_2$)

Non-polar molecule having polar bonds is carbon dioxide, $C{O}_2$.
$C=O$ bonds are polar as two atoms (C and O) significantly differ in electronegativity.
Carbon dioxide is a linear molecule, $O=C=O$
The individual bond dipoles cancel each other.
Hence, the molecule on the whole is non polar.