CBSE Class 8 Science Some Natural Phenomena Assignment Set A

CBSE Class 8 Science - Some Natural Phenomena (1)

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1.When two bodies are rubbed against each other,

(A) They acquire equal and opposite charges. (B) They acquire similar

charges.

(C) One body acquire a charge and the other remains uncharged.

(D) They acquire different amount of charges.

2.A body is said to have positive charge when,

(A)When it has excess of electrons. (B) When it has lack of electrons.

(C) When it has equal protons and neutrons. (D) None of these.

3.When the glass rod is rubbed with silk, which charge isproduced on each of the rods?

(A) Glass rod - positive charge; silk - negative charge.

(B) Glass rod - negative charge; silk - positive charge.

(C) Glass rod - neutral; silk - negative charge.

(D) Glass rod - positive charge; silk - neutral.

4.Which of the statements are true?

(A) Like charges attract each other. (B) Like charges repel each other.

(C) Unlikecharges attract each other. (D) Unlikecharges repel each other.

5.An electron is

(A) Positively charged (B) Negatively charged (C) Neutral (D) None of the

above.

6.The charges generated by rubbing are

(A) Static. B) Moving. C) Dynamic. D) None of the above.

7.Which instrument is used to check whether the body is charged or not?

(A) Telescope. (B) Lightning conductor. (C) Microscope. (D) Electroscope.

8.Charges flow from charged body to uncharged body.

(A) Until the entire charge flows from one part to the other. (B) Until they both carry the

same charge.

(C) Until they both become uncharged. (D) Continuously

9.When an uncharged body touches a charged body, then

(A) Uncharged body acquires a similar charge (B) Uncharged body acquires an equal and

opposite charge.

(C) Charge body loses it charge. (D) Uncharged body remains uncharged.

10.During the earthquake one should

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