Nitrite $({N O}_{2}^{-})$ interferes in the 'ring-test' of nitrate $({N O}_{3}^{-})$ . Some of the following reagents can be used for the removal of nitrite which are :
I: ${N H}_{4} C l$
II: $({N H}_{2})_{2} C S$ (thiourea)
III: ${N H}_{2} {S O}_{3} H$ (sulphamic acid)
IV: Sulphanilic acid
Correct choice is :

I, II

No worries! We‘ve got your back. Try BYJU‘S free classes today!

I, II, IV

No worries! We‘ve got your back. Try BYJU‘S free classes today!

I, II, III, IV

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

I, III, IV

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C I, II, III, IV
Following reagents can be used for the removal of nitrite.
I: ${N H}_{4} C l$
$N a N O_{2} + N H_{4} C l \to N a C l + N H_{4} N O_{2}$
$N H_{4} N O_{2} h e a t - - \to N_{2} ↑ + 2 H_{2} O$
II: $({N H}_{2})_{2} C S$ (thiourea)
$2 N a N O_{2} + H_{2} S O_{4} \to N a_{2} S O_{4} + 2 H N O_{2}$
$2 H N O_{2} + S O (N H_{2})_{2} \to S O_{2} + N_{2} + 3 H_{2} O$
III: ${N H}_{2} {S O}_{3} H$ (sulphamic acid)

Suggest Corrections

Similar questions

({N O_{2}}^{-})

(N O_{3}^{-})

{N O_{2}}^{-}

Among the following structures I to IV
I. II. III. IV.
It is true that

Question 30
Choose the forms in which most plants absorb nitrogen

(i) Proteins
(ii) Nitrates and Nitrites
(iii) Urea
(iv) Atmospheric nitrogen

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

Question 30
Choose the forms in which most plants absorb nitrogen

(i) Proteins
(ii) Nitrates and Nitrites
(iii) Urea
(iv) Atmospheric nitrogen

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

Join BYJU'S Learning Program