Question

Which of the following is a cyclic phosphate ?

A. $${H_3}{P_3}{O_{10}}$$
B. $${H_6}{P_4}{O_{13}}$$
C. $${H_5}{P_5}{O_{15}}$$  
D. $${H_7}{P_5}{O_{16}}$$
Answer :   $${H_5}{P_5}{O_{15}}$$
Solution :
$${H_5}{P_5}{O_{15}}$$   or $${\left( {HP{O_3}} \right)_5}.$$   It is metaphosphoric acid which is a cyclic phosphate.

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

Releted Question 1

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

A. $${N_2}{O_5}$$
B. $${N_2}{O_4}$$
C. $$N{O_2}$$
D. $${N_2}{O_3}$$
View Answer
Releted Question 2

The temporary hardness of water due to calcium carbonate can be removed by adding —

A. $$CaC{O_3}$$
B. $$Ca{\left( {OH} \right)_2}\,$$
C. $$CaC{l_2}$$
D. $$\,HCl$$
View Answer
Releted Question 3

Which of the following is most stable to heat

A. $$HCl$$
B. $$HOCl$$
C. $$HBr$$
D. $$HI$$
View Answer
Releted Question 4

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$   This reaction is an example of

A. Oxidation
B. Reduction
C. oxidation and reduction
D. Neutralisation
View Answer

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P - Block Elements

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