JEE Main 202331 JanuaryEvening Shift
- Exam
- JEE Main
- Year
- 2023
- Date
- 31 January
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Practical Chemistry
JEE Main 2023 · 31 January · Evening Shift · Chemistry · Practical Chemistry
Given below are two statements : Statement I : Upon heating a borax...
Given below are two statements :
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:
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:
Options
- ABoth Statement I and Statement II are false
- BBoth Statement I and Statement II are true
- CStatement I is false but Statement II is true
- DStatement I is true but Statement II is false
Correct answer
A. Both Statement I and Statement II are false
Step-by-step solution
Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes blue. Blue colour is observed due to copper (II) metaborate while copper (I) is colourless,