Question

The brown ring test for $$NO_2^ - $$  and $$NO_3^ - $$  is due to the formation of complex ion with a formula

A. $${\left[ {Fe{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }}$$
B. $${\left[ {Fe\left( {NO} \right){{\left( {CN} \right)}_5}} \right]^{2 + }}$$
C. $${\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]^{2 + }}$$  
D. $${\left[ {Fe\left( {{H_2}O} \right){{\left( {NO} \right)}_5}} \right]^{2 + }}$$
Answer :   $${\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]^{2 + }}$$
Solution :
$${\left[ {Fe{{\left( {{H_2}O} \right)}_5}NO} \right]^{2 + }}\,ion\,\,{\text{is formed}}$$

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. $${N_2}{O_3}$$
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. $$\,HCl$$
Releted Question 3

Which of the following is most stable to heat

A. $$HCl$$
B. $$HOCl$$
C. $$HBr$$
D. $$HI$$
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

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P - Block Elements


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