MCQs For NCERT Class 8 Science With Answers

Students can refer to the following MCQs For Class 8 Science With Answers provided below based on the latest curriculum and examination pattern issued by CBSE and NCERT. Our teachers have provided here collection of multiple choice questions for Science Class 8 covering all topics in your textbook so that students can assess themselves on all important topics and thoroughly prepare for their exams

Class 8 Science MCQ Questions with Answers

We have provided below chapter wise Class 8 Science MCQ Questions with answers which will help the students to go through the entire syllabus and and practice multiple choice questions provided here with solutions. As Science MCQs in Class 8 pdf download can be really scoring for students, you should go thorough all problems provided below so that you are able to get more marks in your exams.

Question. The number of crests passing a given point in one second is (where T is time period and v is frequency)
(A) T
(B) v
(C) 2T
(D) 2v

Question. The time taken by a crest to travel a distance λ. is
(A) T/2
(B) T/ 
(C) T/8
(D) T

Question. What name has been given to the wave of short duration?
(A) pulse
(B) periodic wave
(C) elastic wave
(D) none of these

Question. Sound is caused due to
(A) Vibrations
(B) Propagation of light
(C) Change in Physical State
(D) (A) and (C) both

Question. Sound cannot travel through vacuum because
(A) There are no vibrations
(B) There is no medium present in vacuum
(C) Sound travels in straight line
(D) None of these

Question. The loudness of a sound depends on its __ of vibration.
(A) Oscillations
(B) Frequency
(C) Amplitude
(D) (B) and (C) both

Question. Which figure shows the softer sound and why?
(A) Figure
(A) because it has low amplitude wave
(B) Figure
(B) because it has high amplitude wave
(C) Both (A) and (B)
(D) None of these

Question. The audible frequency range of sound is
(A) 20 HZ to 2000 HZ
(B) 40 HZ to 4000 HZ
(C) 20 HZ to 20000 HZ
(D) (A) and (B) both

Question. The speed of sound wave in air at room temperature is
(A) 364 m/s
(B) 346 m/s
(C) 3 × 108 m/s
(D) None of these

Question. In humans, the sound is produced by
(A) Larynx
(B) Windpipe
(C) Throat
(D) (A) and (B) both

Question. The intensity of sound decreases with increase in distance.
(A) Because sound needs a medium to travel
(B) Because sound energy is lost during propagation of sound
(C) Because loudness of sound depends upon amplitude of vibration
(D) None of these

Question. In the seven notes of Indian music system sa, re, ga, ma, pa, dha, nee the frequency
(A) Increases from nee to sa
(B) Decreases from sa to nee
(C) Increases from sa to nee
(D) (A) and (B) both

Question. If a pendulum has a time period of 3 seconds”then its frequency will be
(A) 3 HZ
B) 3 Seconds
(C) 0.33 HZ
(D) (A) and (C) both

Question. Two sounds A and B are of the same amplitudes, same wave forms, but of frequencies f and 2f respectively. Then:
(A) Frequency of wave (A) is greater than wave
(B) (B) Frequency of wave (B) is greater than wave (A)
(C) Cannot be determined
(D) None of these

Question. What is the relationship between frequency and pitch?
(A) The higher the frequency of a sound, the lower will be its pitch
(B) The higher the frequency of a sound, the higher will be its pitch
(C) The lower the frequency of a sound, the higher will be its pitch
(D) None of these

FILL IN THE BLANKS
Question. The frequency of sound is measured in ……………….
Answer: Hertz

Question. The maximum displacement of a vibrating body from its position of rest is its ………………
Answer: Amplitude

Question. The frequency of ultrasonics is ………………than the range of human hearing.
Answer: Below 20 khz

Question. Sound vibration die out after travelling some distance due to the loss of ………………
Answer: Energy

Question. Sound needs a …………….. to travel.
Answer: Medium

Question. Industrial noise can be reduced by proper ………………
Answer: Machine

Question. The reflecting surface has to be at least ……………… away for us to hear an echo distinctly.
Answer: 11 m

Question. Only vibrating bodies produce ………………
Answer: Sound

Question. The unit of loudness of sound of ………………
Answer: dB

Question. The sound travels faster in ……………… as compared to liquids.
Answer: Solid

Question. The ……………… of sound produced by a vibrating string decrease with the increase in length.
Answer: Frequency

Question. Any vibrating body produces ………………
Answer: Sound

Question. The number of vibrations per second is called ………………
Answer: Frequency

Question. Time taken by an object to complete one oscillation is called ……………..
Answer: Time period

Question. Loudness is determined by ……………… of vibration.
Answer: Amplitude

WRITE TRUE OR FALSE THE FOLLOWING STATEMENTS

Question. The SI unit of time is Hertz.
Answer: F

Question. Sound above 20,000, Hz is called infrasonic.
Answer: F

Question. Loudness of a sound depends on the amplitude of the vibrating object.
Answer: T

Question. Pitch depends on the amplitude of the vibrating object.
Answer: T

Question. The sounds produced by different whistles are the same.
Answer: F

Question. Louder the sound lesser is the amplitude of vibrating body.
Answer: F

Question. Sound travels slower in water as compared to air.
Answer: F

Question. The speed of sound in air is 5100 ms–1.
Answer: F

Question. Unwanted or unpleasant sound is termed as music.
Answer: F

Question. Noise pollution cannot cause partial deafness.
Answer: F

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The importance of MCQs For NCERT Class 8 Science has been increasing in the Class 8 examination. More and more questions with multiple choice have started coming in Class 8 examinations, thus it’s important for students to practice as many MCQs as possible given on our website. These choice based questions have been developed after careful study of Science textbook issued by NCERT and study of all important topics. Students have always been advised by teachers to go through as many MCQs as possible prior to the examination to make sure they have a thorough understanding of each topic and are able to get good scores in their exams.

Our Science teachers for class 8 have done a great amount of work in developing these questions and providing you solutions. Class 8 students should go through these questions and also for other subjects in Class 8 given on our website. This will help the students to gain a full understanding of each and every important topic in the chapters which you are currently studying.

Advantages of MCQs for Class 8 Science

a) More MCQ based questions have started coming in Class 8 Science examinations thus increasing its importance

b) Multiple Choice Questions for Science Class 8 should be practiced daily to make sure all points in a chapter are covered thoroughly.

c) Daily practicing MCQs will help you to gain an understanding of very minor topics given in each chapter of Science so that you have a strong understanding of everything given in each chapter

d) Though the MCQs can be tricky but if you practice as many multiple choice as possible then you will definitely give correct answers

We provide Free PDFs of MCQs in CBSE Class 8 Science which have been developed as per the latest syllabus and curriculum issued by CBSE, NCERT and KVS.