wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In borax bead test of Co2+ the blue colour of bead is due to :

A
Co3B2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Co(BO2)2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
CoO
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
none of the above
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is D Co(BO2)2
In borax bead test, the colour given by Co2+ is blue.
Na2B4O7.10H2O2NaBO2+B2O3+10H2O

B2O3+CoOCo(BO2)2(Blue)

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
First Law of Thermodynamics
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon