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Chapter 23: Sound Waves - Science Mcqs for Grade 7
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Chapter 23: Sound Waves - Science Mcqs for Grade 7
>> The length of air cutting is changed by
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CBSE MCQs
Q. The length of air cutting is changed by
a.
valves
b.
fingers
c.
valves and fingers
d.
hands
ANSWER: valves and fingers
Answer & Explanation
No explanation is available for this question!
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