Sound — Class 8 MCQs with Answers
Class 8 CBSE Science · Chapter 110
Pre-2026 syllabusThis chapter is from the older NCERT book. See the 2026-27 Class 8 Science chapters →
72 practice questions · 24 Easy · 24 Medium · 24 Hard · Updated
Jump to the 6 solved questions
Practise the most important Class 8 CBSE Science questions from Chapter 110, "Sound". You get 6 timed quizzes made from 72 NCERT-based MCQs, with answers and explanations. The questions are split into 24 Easy, 24 Medium and 24 Hard. Warm up on the basics, then move on to the exam-level questions that top scorers in CBSE Board exams get right.
To score well in "Sound", focus on clear concepts in physics, chemistry and biology basics. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This helps you stay accurate when time is short, just as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Sound, then move to Medium and Hard to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 8 Science mastery score. Try the 6 sample questions below: tap an option to see the answer and a worked explanation. Sign in free to start practising.
Sound — important questions & MCQs with answers (Class 8 Science)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. Tap an option to check yourself.
0 of 6 answered
- Q1 of 6Easy
Sound is produced by objects that are:
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Answer: Vibrating
Explanation: Sound is produced by vibrating objects — a rapid to-and-fro motion.
- Q2 of 6Easy
Sound needs a ____ to travel.
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Answer: Medium
Explanation: Sound requires a material medium (solid, liquid or gas) to travel; it cannot travel through a vacuum.
- Q3 of 6Medium
Two sounds have the same loudness but one is more shrill. The shriller sound has:
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Answer: A higher frequency
Explanation: Pitch (shrillness) depends on frequency, so the shriller sound has a higher frequency.
- Q4 of 6Medium
How do we hear a sound made some distance away?
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Answer: Vibrations travel through the air to the eardrum, which vibrates and we hear
Explanation: Sound vibrations travel through air to the eardrum; its vibrations let us hear the sound.
- Q5 of 6Hard
Which of the following statements is INCORRECT?
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Answer: Pitch depends on amplitude
Explanation: Pitch depends on FREQUENCY, not amplitude, so this statement is incorrect.
- Q6 of 6Hard
In a flute, the sound is produced by the vibration of:
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Answer: The column of air inside it
Explanation: Blowing across a flute sets the air column inside vibrating, producing the sound.
Sound notes: key concepts (Class 8 Science)
This chapter covers how sound is produced and travels, its characteristics, the human ear, and noise pollution.
- Production of sound
- Sound is produced by vibrating objects; without vibration there is no sound.
- Propagation of sound
- Sound needs a medium (solid, liquid or gas) to travel; it cannot travel through a vacuum.
- Characteristics of sound
- Amplitude decides loudness; frequency decides pitch (frequency is measured in hertz, Hz).
- Audible range
- Humans hear frequencies from 20 Hz to 20,000 Hz; below is infrasound, above is ultrasound.
- Noise pollution
- Unwanted, loud sound that harms health; reduced by controlling sources and planting trees.
Start this chapter free
You have 6 to try above. Sign in with Google (no card needed). You get 1 Easy + 1 Medium quiz on every chapter, free for good (up to 6 quizzes a day) — plus a free Hard quiz when you score 70%+ on a Medium quiz (1 per subject), and the formulas & exam tips.
This chapter has 72 questions (24 Easy · 24 Medium · 24 Hard), with timed scoring and instant feedback. The rest unlock with the ₹999/year plan.
Start with the questions above. The full quiz opens here after.
Sound — FAQs
What are the key concepts in Class 8 Science Sound?+
This chapter covers how sound is produced and travels, its characteristics, the human ear, and noise pollution. Key ideas include Production of sound, Propagation of sound, Characteristics of sound, Audible range, Noise pollution.
What does Class 8 Science Chapter 110 (Sound) cover on XamBaaz?+
It has 72 NCERT-based MCQs on "Sound": 24 Easy, 24 Medium and 24 Hard. Together they make 6 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE Board exams.
Are these "Sound" questions free to practise?+
Yes. Sign in with Google to practise "Sound" free. Full unlimited access is ₹999/year. One year from the day you pay. You stay in Class 8 till 31 March; on 1 April your account moves up to Class 9 and the rest of your year carries over. No chapter is charged separately.
How should I revise "Sound" for the exam?+
Start with the Easy quiz to check your basics, then try Medium and Hard to practise applying them. There are 6 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Sound" MCQs available with answers?+
Yes. 6 sample questions are on this page with answers: tap an option, or "Show answer", to see the correct option and a step-by-step explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Sound" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Sound (Class 8 Science)?+
The questions that matter most test Production of sound, Propagation of sound, Characteristics of sound, Audible range, Noise pollution. This page shows 6 solved important MCQs with answers and explanations. Sign in to practise all 72 questions on the chapter as timed quizzes.
Is there an online quiz for Sound?+
Yes — Class 8 Science Sound has timed online quizzes at Easy, Medium and Hard levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.
Are there question answers and extra questions for Sound (Class 8 Science)?+
Yes. This page has 6 solved questions on Sound, each with the correct answer and a short explanation. Sign in to practise all 72 questions on the chapter as timed quizzes.