Class 8 Science Chapter 15 MCQ (Multiple Choice Questions) of Some Natural Phenomena for CBSE and state board students updated for academic session 2022-2023. 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 2022-2023
| Class: 8 | Science |
| Chapter: 15 | Some 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
Consider the following statements and choose the incorrect one:
[A]. [A] If we rub one end of a pen made of plastic with a sheet of paper, it attracts the tiny pieces of paper.
[B]. If we take an inflated rubber balloon, rub it carefully with a piece of woolen cloth and then touch it with a wall, the balloon stick to the wall.
[C]. The glass rod is first rubbed with a piece of silk cloth and then brought near the tiny pieces of paper the glass rod attracts the tiny pieces of paper.
[D]. None of the above
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
Electric current is to be passed from one body to another. For this purpose, the two bodies must be joined by:
[A]. Cotton thread
[B]. Plastic string
[C]. Copper wire
[D]. Rubber band
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
The movement of the earth’s plate causes:
[A]. Cyclones
[B]. Lightning
[C]. Earthquakes
[D]. Thunderstorms
Q7
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
Q8
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
Q9
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
Q10
The earth’s plate responsible for causing earthquake is:
[A]. The crust of the earth
[B]. The mantle of the earth
[C]. The inner core of the earth
[D]. The outer core of the earth
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 magnitude of an earthquake is measured on:
[A]. Celsius scale
[B]. Kelvin scale
[C]. Decibel scale
[D]. Richter scale
Q13
Badal appeared in class test but he confused to know the incorrect statement. Would you help him to know that?
[A]. All the objects like glass rod, silk cloth, rubber balloon, ballpoint pen etc., are made up of tiny particles called atoms.
[B]. We know that positive electric charges called protons and negative electric charge is called electrons.
[C]. The number of protons and electrons in the atoms are equal.
[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 outermost layer of the earth is called:
[A]. Mantle
[B]. Outer core
[C]. Crust
[D]. Inner core
Q16
Major earthquakes are less likely to occur in:
[A]. North East India
[B]. Rajasthan
[C]. Rann of Kutch
[D]. Orissa
Q17
Earthquakes can cause:
[A]. Tsunami, Landslides and Floods
[B]. Landslides and Lighting.
[C]. Landslides, floods and lighting.
[D]. Floods and Lighting
Q18
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
Q19
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
Q20
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.
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
Consider the following statements and choose the correct one:
[A]. Seismograph is an instrument which measures and records the magnitude of an earthquake in terms of the shock waves it produces.
[B]. The place inside the earth’s crust where the earthquake is generated, is called “focus” of the earthquake.
[C]. The point on earth’s surface directly above the focus is called “epicenter”.
[D]. All the above
Q25
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
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