MCQ
Select the WRONG statement:
- AVoltmeter can not measure e.m.f of a cell directly.
- BA voltmeter can measure high voltages.
- ✓Potentiometer can measure large voltages.
- DPotentiometer measures e.m.f of a cell.
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$\ce{H3C - C ≡ CH + H - OH ->[{40%}H2SO4][{1%}HgSO4] ?}$
