Question

Amongst the following compounds (I) $H_5{P}_3{O}_{10}$, (II) $H_6{P}_4{O}_{13}$, (III) $H_5{P}_5{O}_{15}$ and (IV) $H_7{P}_5{O}_{16}$, the non-cyclic phosphates are :

• A. I and III
• B. I, II and III
• C. I, II and IV
• D. I, II, III and IV

Answer 1

Answer: (C)

I, II and IV

Here are the structures of some of the phosphates. $H_5{P}_3{O}_{10}$, $H_6{P}_4{O}_{13}$ and $H_7{P}_5{O}_{16}$ are non-cyclic phosphates.