JEE Mains · Chemistry · STD 11 -p-Block elements - I
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 :
- A Both Statement \(I\) and Statement \(II\) are true
- B Statement \(I\) is true but Statement \(II\) is false
- C Both Statement \(I\) and Statement \(II\) are false
- D Statement \(I\) is false but Statement \(I\) is true
Answer & Solution
Correct Answer
(C) Both Statement \(I\) and Statement \(II\) are false
Step-by-step Solution
Detailed explanation
(Borax Bead Test) On treatment with metal salt, boric anhydride forms metaborate of the metal which gives different colours in oxidising and reducing flame. For example, in the case of copper sulphate, following reactions occur.…
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