How many different kinds of protons are present in each of the following compounds?
(i) 1-bromopropane(ii) 2-bromopropane
(iii) 2-methylbutane

• A. (i) two types of protons
  (ii) two types of protons
  (iii) three types of protons
• B. (i) three types of protons
  (ii) two types of protons
  (iii) four types of protons
• C. (i) three types of protons
  (ii) three types of protons
  (iii) four types of protons
• D. (i) four types of protons
  (ii) three types of protons
  (iii) three types of protons

Answer: (B)