General Science- Kisi Madhyam Me Dhwani Tej Chalti Hai ?

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Q.10424: किसी माध्यम में ध्वनि तेज चलती है ?
A.
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D.
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किसी माध्यम में ध्वनि तेज चलती है ? General Science in hindi,  Saaf Pani question answers in hindi pdf  Nirvaat questions in hindi, Know About Hawa General Science online test General Science notes in hindi quiz book    Rangeen Pani

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