MCQ
The species responsible for nitration and sulphonation by nitric acid conc. $H_2SO_4$ and fuming $H_2SO_4$ are :
- A$NO_2$ and $SO_3$
- ✓$NO_2^+$ and $SO_3$
- C$NO^+$ and $SO_2$
- D$NO_2$ and $SO_2$
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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 :
