Ans. – Since we know that charging of a bodydepends upon transfer of electrons. So, if a bodybecomes negatively charged it will gain electrons that is its mass will increase and if a body becomes positively charged it loses electrons hence its mass will decrease.

Yes, a charged body can attract another uncharged body. When the charged body is placed near the uncharged body, the induced charges of opposite kind are produced on the uncharged body by the charged body.

When a negative charge is acquired by a body, the mass of the body increases due to the addition of the electron. Therefore, the mass of a body on charging by conduction can increase or decrease according to the sign of the charge acquired by the body. Hence, option C is correct.

If a body acquires a positive charge, than it meand that it lost few electrons. In this way its mass decreases.

A body becomes negatively charged only when some electrons are transferred to the body i.e., the body gains some electrons. Hence its mass increase slightly. Mass of a body decreases only when body gives some electrons to some other body.

Positively charged means the body has more number of protons than that of electrons or practically we can say ih had lost some electrons while charging. Negatively charged body in the sense when the body has more number of electrons than that of protons. In general to say it had gained some electrons on charging.

The triboelectic charging process (a.k.a., charging by friction) results in a transfer of electrons between the two objects that are rubbed together. As a result, the atoms of rubber pull electrons from the atoms of animal fur, leaving both objects with an imbalance of charge.