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AID: 1112 | 23/10/2015Electron is negatively charged particle and proton is a positively charged particle, so conduction takes place when opposite charges attract each other and like charges repel each other. When X has positive or negative charge and Y has positive or negative charge then it will attract with each other alternatively and if the object X is neutral and object Y has a charge then it attracts with each other.

Hence, the options (a), (b) and (d) are true.

When X and Y both have positive charge then they will repel each other and they dont have attraction with each other. Hence unlike charges attracts each other and like charges repel each other.

Hence the option (c) is false.