Question

Cautions action of the acid to an anion in cold yields a transient, Pale-blue liquid with the evolution of brown furmes of a gas.Which of the following combination is correct for above statement.
A. (I)(i)(R)
B. (IV)(iii)(S)
C. (III)(iv)(Q)
D. (III)(iv)(R)

Answer 1

Correct Answer - C
`NO^(2-)+H_2SO_4(dil.)toHNO_2`
`(2HNO_2toN_2O_3+H_2O)`
Translent pale blue liquid
`3HNO_2 to HNO_3 + 2NO+H_2O`
2NO+`O_2tounderset("Reddish brown vapour of"NO_2)(2NO_2(uarr))`
`2MnO_4^(-)+5NO_2^(-)+6H^(+)to2Mn^(+2)+3H_2O+5NO_3^(-)`