Choose the correct answer — task. Science CBSE, Class 8.

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1. Which of the following cannot be charged easily by friction?

An inflated balloon
A plastic scale
A copper rod
A woollen cloth

2. When a glass rod is rubbed with a piece of silk cloth the rod __________.

and the cloth both acquire negative charge
becomes positively charged while the cloth has a negative charge
becomes negatively charged while the cloth has a positive charge
and the cloth both acquire positive charge

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