Revision Questions for Class 9 Science Sound. Try first, then reveal the answer. These are exam-oriented practice items, not copied board papers.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
Answers opened: 0
Practice set
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Sound in the chapter Sound.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Sound is an NCERT chapter taught in CBSE Class 9 Science
C. Sound needs a medium
D. Amplitude relates to loudness
Answer
C. Sound needs a medium
Explanation
Sound needs a medium. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q2MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Speed of sound is fastest in solids among the three states typically
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Frequency decides pitch
Answer
D. Frequency decides pitch
Explanation
Frequency decides pitch. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q3MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Echo is reflection of sound
B. Every chapter ends with keywords or a summary that is useful for one-mark answers
C. Amplitude relates to loudness
D. Write three points from Sound in your own words; that is enough for a short-answer start
Answer
C. Amplitude relates to loudness
Explanation
Amplitude relates to loudness. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q4MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Speed of sound is fastest in solids among the three states typically
B. Use the terms used in the NCERT book; do not replace them with unofficial names
C. Sound is an NCERT chapter taught in CBSE Class 9 Science
D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer
A. Speed of sound is fastest in solids among the three states typically
Explanation
Speed of sound is fastest in solids among the three states typically. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Sound in the chapter Sound.
A. Echo is reflection of sound
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Mix MCQs with short answers so you remember both facts and explanations from Sound
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
A. Echo is reflection of sound
Explanation
Echo is reflection of sound. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q6MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Speed of sound is fastest in solids among the three states typically
B. Sound is an NCERT chapter taught in CBSE Class 9 Science
C. Every chapter ends with keywords or a summary that is useful for one-mark answers
D. Write three points from Sound in your own words; that is enough for a short-answer start
Answer
B. Sound is an NCERT chapter taught in CBSE Class 9 Science
Explanation
Sound is an NCERT chapter taught in CBSE Class 9 Science. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q7MCQ1 markEasy
Choose the correct statement related to Textbook first in the chapter Sound.
A. The textbook says the opposite of this statement
B. CBSE often tests a concept by asking a daily-life example from the same chapter
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
D. Use the terms used in the NCERT book; do not replace them with unofficial names
Answer
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
Explanation
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q8MCQ1 markEasy
Choose the correct statement related to Keywords in the chapter Sound.
A. This happens only in a laboratory and never in daily life
B. Mix MCQs with short answers so you remember both facts and explanations from Sound
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Explanation
Every chapter ends with keywords or a summary that is useful for one-mark answers. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Sound.
A. This idea is not part of the NCERT chapter
B. Write three points from Sound in your own words; that is enough for a short-answer start
C. CBSE often tests a concept by asking a daily-life example from the same chapter
D. Sound needs a medium
Answer
C. CBSE often tests a concept by asking a daily-life example from the same chapter
Explanation
CBSE often tests a concept by asking a daily-life example from the same chapter. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q10MCQ1 markModerate
Choose the correct statement related to Diagrams in the chapter Sound.
A. Use the terms used in the NCERT book; do not replace them with unofficial names
B. The textbook says the opposite of this statement
C. Frequency decides pitch
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Explanation
If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q11MCQ1 markEasy
Choose the correct statement related to Revision in the chapter Sound.
A. Mix MCQs with short answers so you remember both facts and explanations from Sound
B. Write three points from Sound in your own words; that is enough for a short-answer start
C. This happens only in a laboratory and never in daily life
D. Amplitude relates to loudness
Answer
B. Write three points from Sound in your own words; that is enough for a short-answer start
Explanation
Write three points from Sound in your own words; that is enough for a short-answer start. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q12MCQ1 markEasy
Choose the correct statement related to Accuracy in the chapter Sound.
A. This idea is not part of the NCERT chapter
B. Use the terms used in the NCERT book; do not replace them with unofficial names
C. Sound needs a medium
D. Speed of sound is fastest in solids among the three states typically
Answer
B. Use the terms used in the NCERT book; do not replace them with unofficial names
Explanation
Use the terms used in the NCERT book; do not replace them with unofficial names. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Sound.
A. Mix MCQs with short answers so you remember both facts and explanations from Sound
B. Echo is reflection of sound
C. The textbook says the opposite of this statement
D. Frequency decides pitch
Answer
A. Mix MCQs with short answers so you remember both facts and explanations from Sound
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Sound. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q14MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. This happens only in a laboratory and never in daily life
C. Sound needs a medium
D. Speed of sound is fastest in solids among the three states typically
Answer
C. Sound needs a medium
Explanation
Sound needs a medium. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q15MCQ1 markModerate
Choose the correct statement related to Sound in the chapter Sound.
A. Sound needs a medium
B. Echo is reflection of sound
C. Frequency decides pitch
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer
C. Frequency decides pitch
Explanation
Frequency decides pitch. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q16MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Sound is an NCERT chapter taught in CBSE Class 9 Science
B. CBSE often tests a concept by asking a daily-life example from the same chapter
C. Frequency decides pitch
D. Amplitude relates to loudness
Answer
D. Amplitude relates to loudness
Explanation
Amplitude relates to loudness. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Sound in the chapter Sound.
A. Amplitude relates to loudness
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Speed of sound is fastest in solids among the three states typically
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
C. Speed of sound is fastest in solids among the three states typically
Explanation
Speed of sound is fastest in solids among the three states typically. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q18MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Speed of sound is fastest in solids among the three states typically
B. Every chapter ends with keywords or a summary that is useful for one-mark answers
C. Echo is reflection of sound
D. Write three points from Sound in your own words; that is enough for a short-answer start
Answer
C. Echo is reflection of sound
Explanation
Echo is reflection of sound. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q19MCQ1 markEasy
Choose the correct statement related to Sound in the chapter Sound.
A. Frequency decides pitch
B. Echo is reflection of sound
C. Sound is an NCERT chapter taught in CBSE Class 9 Science
D. This topic is only for college
Answer
C. Sound is an NCERT chapter taught in CBSE Class 9 Science
Explanation
Sound is an NCERT chapter taught in CBSE Class 9 Science. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q20MCQ1 markModerate
Choose the correct statement related to Textbook first in the chapter Sound.
A. Mix MCQs with short answers so you remember both facts and explanations from Sound
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Sound is an NCERT chapter taught in CBSE Class 9 Science
Answer
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
Explanation
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q211 Mark1 markEasy
Define or state: Keywords.
Answer
Every chapter ends with keywords or a summary that is useful for one-mark answers.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q221 Mark1 markEasy
Define or state: Examples.
Answer
CBSE often tests a concept by asking a daily-life example from the same chapter.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q231 Mark1 markEasy
Define or state: Diagrams.
Answer
If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q241 Mark1 markEasy
Define or state: Revision.
Answer
Write three points from Sound in your own words; that is enough for a short-answer start.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q251 Mark1 markModerate
Define or state: Accuracy.
Answer
Use the terms used in the NCERT book; do not replace them with unofficial names.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q261 Mark1 markEasy
Define or state: Practice.
Answer
Mix MCQs with short answers so you remember both facts and explanations from Sound.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q271 Mark1 markEasy
Define or state: Sound.
Answer
Sound needs a medium.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q281 Mark1 markEasy
Define or state: Sound.
Answer
Frequency decides pitch.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q291 Mark1 markEasy
Define or state: Sound.
Answer
Amplitude relates to loudness.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q301 Mark1 markModerate
Define or state: Sound.
Answer
Speed of sound is fastest in solids among the three states typically.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q312 Mark2 marksModerate
Give two points to explain Sound as used in Sound.
Answer
1. Echo is reflection of sound.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q322 Mark2 marksDifficult
Give two points to explain Sound as used in Sound.
Answer
1. Sound is an NCERT chapter taught in CBSE Class 9 Science.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q332 Mark2 marksModerate
Give two points to explain Textbook first as used in Sound.
Answer
1. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q342 Mark2 marksModerate
Give two points to explain Keywords as used in Sound.
Answer
1. Every chapter ends with keywords or a summary that is useful for one-mark answers.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q352 Mark2 marksModerate
Give two points to explain Examples as used in Sound.
Answer
1. CBSE often tests a concept by asking a daily-life example from the same chapter.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q362 Mark2 marksDifficult
Give two points to explain Diagrams as used in Sound.
Answer
1. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q372 Mark2 marksModerate
Give two points to explain Revision as used in Sound.
Answer
1. Write three points from Sound in your own words; that is enough for a short-answer start.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q382 Mark2 marksModerate
Give two points to explain Accuracy as used in Sound.
Answer
1. Use the terms used in the NCERT book; do not replace them with unofficial names.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q392 Mark2 marksModerate
Give two points to explain Practice as used in Sound.
Answer
1. Mix MCQs with short answers so you remember both facts and explanations from Sound.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q402 Mark2 marksDifficult
Give two points to explain Sound as used in Sound.
Answer
1. Sound needs a medium.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 9 · Subject: Science · Chapter: Sound · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
FAQs
Are these official CBSE board questions?
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Will these questions appear in the board exam?
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
Is the chapter list the latest NCERT list?
Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.
How should I use the 100 questions?
Try the question first, then tap Show answer. Mix MCQs with long answers. Revise formulas and diagrams from the textbook alongside this set.
Where are NCERT solutions?
Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.
What is the suggested URL pattern?
Hub /cbse/, then /cbse/class-9/, then subject and chapter slugs.
Why is this a separate URL?
So students searching for “Revision Questions” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.
Today's 3-step path
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
