Question

Select correct statement :

• A. Cl2O and ClO2 are used as bleaching agents and as germicides.
• B. I2O5 is used in the quantitative estimation of CO.
• C. Cl2O explodes in presence of ammonia forming NH4Cl and liberating N2 gas.
• D. All are correct.

Answer 1

Answer: (D)

All are correct.

Answer 2

(1) Correct statement. ClO2 $\overset{\quad light\quad}{\rightarrow}$ClO + [O] ; it kill bacteria better than Cl2.

(2) CO can be estimated by reaction with iodine pentoxide, the iodine which is produced quantitatively being titrated with standard sodium thiosulphate solution.

5CO(g) + I2O5(s) $\longrightarrow$I2(s) + 5CO2(g)

(3) 3Cl2O + 10NH3 $\longrightarrow$6NH4Cl + 2N2 + 3H2O.