CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

NiS on reacting with aqua regia gives

A
NiSO4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
NiNO3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
NiCl2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Ni(OH)2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C NiCl2
NiS (black precipitate) from group IV analysis dissolves in aqua regia to give nickel chloride which is soluble in water.

3NiS+2HNO3+6HCl3NiCl2+2NO+3S+4H2O

When dimethyl glyoxime is added ​to the aqueous solution of nickel ​chloride made alkaline by ​adding NH4OH solution​ it gives a brilliant red precipitate.

Option (b) is correct.

flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
SN1 Mechanism
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon