Class 8th Science Chapter – 10 Sound
| Textbook | NCERT |
| Class | 8th |
| Subject | Science |
| Chapter | 10th |
| Chapter Name | Sound |
| Category | Class 8th Science |
| Medium | English |
| Source | Last Doubt |
| Class 8th Science Chapter – 10 Sound MCQ With Answer What is the SI unit of sound?, What is the type of sound?, What is the formula of sound?, What are the 3 units of sound?, What is the volume of sound called?, What is called sound?, What is the speed of a sound?, How is sound measured?, What is range of sound?, What is sound level?, What type of energy is sound?, How does sound travel?, What are waves in sound?, What is the sound of nature?, How big is a sound?, Why is sound a form of energy?, What are the 4 qualities of sound? |
Class 8th Science Chapter – 10 Sound
Chapter – 10
Sound
MCQ
| (1) Drum produces sound from ? A. vibrating membrane B. vibrating stretched membrane C. vibrating strings D. none of these Answer – (B) vibrating stretched membrane |
| (2) A shehnai produces sound from ? A. vibrating strings B. vibrating membrane C. vibrating air column D. none of these Answer – (C) vibrating air column |
| (3) Vibration in a body produce ? A. energy B. sound C. heat D. none of these Answer – (B) sound |
| (4) Voice of which of the following is likely to have minimum frequency ? A. baby girl B. baby boy C. a man D. a woman Answer – (A) baby girl |
| (5) Sound can travel through ? A. gases only B. solids only C. liquids only D. solids, liquids and gases Answer – (D) solids, liquids and gases |
| (6) The ultrasound equipment works at frequencies ? A. higher than 20,000 Hz B. lower than 20,000 Hz C. less than 20 Hz D. none of these Answer – (A) higher than 20,000 Hz |
| (7) When the amplitude is small, the sound produced is ? A. loud B. feeble C. low pitched D. none of these Answer – (B) feeble |
| (8) The frequency determines the of a sound ? A. loudness B. pitch C. both loudness and pitch D. none of these Answer – (B) pitch |
| (9) The unit of frequency is ? A. hertz B. hertz /sec C. hertz / min D. hertz / hour Answer – (A) hertz |
| (10) Frequency of oscillations is ? A. the number of oscillations per minute B. the number of oscillations per hour C. the number of oscillations per second D. none of these Answer – (C) the number of oscillations per second |
| (11) Large amplitude of sound vibrations will produce ? A. loud sound B. slow sound C. meak sound D. shreak Answer – (A) loud sound |
| (12) Voice box has stretched string like parts, which vibrate to produce sound are called ? A. larynx B. vocal cords C. nerves D. arteries Answer – (B) vocal cords |
| (13) Number of vocal cords in human is ? A. one B. two C. four D. none of these Answer – (B) two |
| (14) Trees planted along the roads reduces the harmful effect of ? A. noise pollution B. air pollution C. both A. and B. D. none of these Answer – (C) both A. and B. |
| (15) Noise pollution causes ? A. lack of sleep B. hypertension C. anxiety D. all of these Answer – (D) all of these |
| (16) Process of receiving sound vibrations and sensing them by brain is called ? A. producing B. speaking C. sensing D. hearing Answer – (D) hearing |
| (17) Unwanted and unpleasant sounds are called ? A. noise B. noise pollution C. music D. air pollution Answer – (A) noise |
| (18) Sound does not travel in ? A. vacuum B. gases C. solids D. liquids Answer – (A) vacuum |
| (19) Propagation of sound is fastest In ? A. gases B. liquids C. solids D. vacuum Answer – (C) solids |
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