$N i S$ on reacting with aqua regia gives

N i S O_{4}

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

N i N O_{3}

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

N i C l_{2}

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

N i (O H)_{2}

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

Open in App

Solution

The correct option is C $N i C l_{2}$
$N i S$ (black precipitate) from group IV analysis dissolves in aqua regia to give nickel chloride which is soluble in water.

$3 N i S + 2 H N O_{3} + 6 H C l \to 3 N i C l_{2} + 2 N O + 3 S + 4 H_{2} O$

When dimethyl glyoxime is added to the aqueous solution of nickel chloride made alkaline by adding $N H_{4} O H$ solution it gives a brilliant red precipitate.

Option (b) is correct.

Suggest Corrections

Similar questions

Gold does not react easily with acid but it reacts with aqua regia. What is aqua regia ? Why does it react with gold?

(i)What is aqua regia?

(ii)Give any two uses of aqua regia.

What is aqua regia? Give examples of metals that are soluble in aqua regia

Write a note on Aqua Regia? Give one use of it?

Join BYJU'S Learning Program