Class 8 Science Chapter 15 MCQ

Class 8 Science Chapter 15 MCQ (Multiple Choice Questions) of Some Natural Phenomena for CBSE and state board students updated for academic session 2021-2022. All the questions are important not only for unit test taken in class but the terminal exams also.

Practice here with these MCQ objective questions to clear your doubts related to chapter 15 and be confident in exams and debates. All the important questions are covered here using MCQs objective test.

Class 8 Science Chapter 15 MCQ for 2021-2022

Class: 8Science
Chapter: 15Some Natural Phenomena
Contents:MCQ with answers and Explanation

MCQ Tests with Answers for Class 8 Science Chapter 15




Q1

An electroscope is a device which is used to find if an object is:

[A]. Charged
[B]. Magnetic
[C]. Free of cracks
[D]. Hot
Q2

Which of the following cannot be charged by friction, if held by hand?

[A]. A plastic scale
[B]. A copper rod
[C]. An inflated balloon
[D]. A woolen cloth
Q3

Read the following sentences carefully, and choose the correct one:

[A]. The process of giving electric charge to an object is called charging the object.
[B]. An object having no electric charge on it, is called an uncharged object.
[C]. The charging of an object by rubbing it with another object is called charging by friction.
[D]. All the above
Q4

When a glass rod is rubbed with a piece of silk cloth then:

[A]. The glass rod and silk cloth both acquire positive charge.
[B]. The glass rod becomes positively charged while the silk cloth has a negative charge.
[C]. The glass rod and silk cloth both acquire negative charge.
[D]. The glass rod becomes negatively charged while the silk cloth has a positive charge.
Q5

Paheli is writing some statements, choose the incorrect statement and help her:

[A]. The electric charges generated by rubbing of friction are static electric charges.
[B]. When a ball point pen refill is rubbed vigorously with a piece of polythene, the refill acquires electric charge by friction.
[C]. All the insulators object like glass rod, plastic comb, plastic scale, plastic straw etc. can be charged by rubbing while held in hand.
[D]. None of the above




Q6

Which of the following are transferred from one object to another object when these two objects are charged by friction?

[A]. Atoms
[B]. Protons
[C]. Neutrons
[D]. Electrons
Q7

The electric nature of lightning was established by a scientist named:

[A]. Isaac Newton
[B]. Robert Hooke
[C]. Benjamin Franklin
[D]. Thales
Q8

When two objects are rubbed together, then both the objects get opposite charged. Choose the wrong statements:

[A]. The glass rod acquires a positive electric charge where is the silk cloth gets a negative electric charge.
[B]. The ballpoint pen refill acquires a positive charge whereas polythene gets a negative charge.
[C]. Plastic comb gets negative charge whereas the hair gets positive charge.
[D]. None of the above
Q9

Which of the following is not likely to cause “Tsunami”?

[A]. [A] A major nuclear explosion under the sea
[B]. Earthquake
[C]. Volcanic eruption
[D]. Lightning
Q10

A plastic comb is rubbed with dry hair whereas a glass rod is rubbed with a piece of silk cloth. Which of these will get negatively charged?

[A]. Plastic comb and Glass rod
[B]. Glass rod and Dry hair
[C]. Plastic comb and Silk cloth
[D]. Glass rod and Silk cloth



Q11

Payal is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payel wants to take help from you:

[A]. All the objects made of clear plastic as ballpen refill, plastic scale etc., called acrylic, gets positive charge on rubbing.
[B]. All the objects made of polythene plastic or polythene sheet or polythene plastic comb gets negative charge on rubbing.
[C]. The object will get positive or negative charge; it depends on the nature of material of which the two objects are made.
[D]. None of the above
Q12

The boundaries of the earth plate are known as:

[A]. Seismic zone and Fault zone
[B]. Seismic zone and Mantle
[C]. Mantle zone and Inner core
[D]. Fault zone, Mantle and Inner core
Q13

Puja is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:

[A]. The object which loses negatively charged electrons during rubbing, acquires a positive electric charge.
[B]. The object which gains negatively charged electrons during the rubbing, acquires a negative electric charge.
[C]. The positively charged protons are held strongly inside the nucleus of atom.
[D]. None of the above
Q14

An earthquake of magnitude 2 on Richter scale is:

[A]. Two times as strong as an earthquake of magnitude 1
[B]. Four times as strong as an earthquake of magnitude 1
[C]. Ten times as strong as an earthquake of magnitude 1
[D]. Hundred times as strong as an earthquake of magnitude 1
Q15

The epicenter of an earthquake is:

[A]. Deep under the crust of earth
[B]. In the mantle of earth
[C]. On the surface of earth
[D]. In the core of earth




Q16

Major earthquakes are less likely to occur in:

[A]. North East India
[B]. Rajasthan
[C]. Rann of Kutch
[D]. Orissa
Q17

When a plastic comb is rubbed with dry hair, the hair gets positively charged by friction. In this process:

[A]. The hair loses some positive protons
[B]. The hair gains some positive protons
[C]. The hair loses some negative electrons
[D]. The hair gains some negative electrons
Q18

In a science quiz competition, Payel is asked a question where she had to choose the statement which was/were correct?

[A]. We should avoid raising an umbrella over our head during lightning.
[B]. Earthquake is a destructive natural phenomenon which cannot be predicted in advance.
[C]. Tremors on the earth can also be caused when a volcano erupt or a big meteorite hits the earth or nuclear explosion (by human being).
[D]. All the above
Q19

Read the following sentences carefully, and choose the incorrect one:

[A]. If one object has positive charge and the other object has negative charge, then the two objects attract each other.
[B]. If the two objects have positive charge, they repel each other.
[C]. If the two objects have a negative charge, they repel each other.
[D]. Since, a charged balloon and a charged ball pen refill having unlike charges, they repel each other.
Q20

The tremendous electric charges in the atmosphere which produce sheet lightning in the clouds are produced by the process of:

[A]. Friction
[B]. Induction
[C]. Conduction
[D]. Convection



Q21

Read the following sentences carefully, and choose the incorrect one:

[A]. The magnitude of an earthquake is expressed on the Richter scale.
[B]. The weak zones of earth’s crust are called “seismic zones”.
[C]. The earthquake having magnitude higher than 7 on the Richter scale, are really destructive earthquake.
[D]. None of the above
Q22

An inflated rubber balloon is rubbed with a woolen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged?

[A]. Inflated rubber ballon and woolen cloth
[B]. Woolen cloth and ball point pen refill
[C]. Inflated rubber ballon and polythene bag
[D]. Woolen cloth and polythene bag
Q23

Consider the following statements and choose the correct one:

[A]. Lightning strikes are more frequent in hilly areas because in such area’s clouds are comparatively closer to the ground than in the planes.
[B]. When lighting strikes the earth, it can cause a lot of destruction by damaging property and killing people.
[C]. Lightning conductor is a device used to protect a building from the effects of lightning.
[D]. All the above
Q24

Choose the incorrect statements, if we are at home when an earthquake occurs:

[A]. If we are in bed, we should just move on the bed to be close to a wall but not get up from the bed.
[B]. We should stay away from tall and heavy objects and glass windows.
[C]. We should take shelter under a study table or kitchen counter and stay there till the shaking due to earthquake stops.
[D]. None of the above
Q25

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. The innermost part of the earth is called its “Core”.
[B]. The central region of earth is called “Mental”.
[C]. The outermost layer of the earth is called “Crust”.
[D]. The crust of earth is totally one piece of plate.

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