MCQ
Ammonium hydroxide is a
- AStrong electrolyte
- ✓Weak electrolyte
- CBoth under different conditions
- DNon-electrolyte
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Statement $I:$ Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement $II:$ The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below :

| System $A$ | System $B$ |
| Temprature rise | Temprature remains same |