Three capacitors with capacitance 1uF, 2uF and 3uF are connected in series. Each capacitor gets punctured, if the P.D. just exceeding the 100V is applied. The group is connected across 220V circuit, then the capacitor most likely to puncturefirst if of.
i) capacitance 1uF
​ii)​capacitance 2uF
iii)capacitance 3uF
iv)​capacitance 1uF or 2uF or 3uF

Capacitor 1 uf
s in series eq capacitance will be 6/11 
so charge on each = 6/11× 220 = 120
o potential across 1uf capacitors 
/c = 120/1 =120
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