state gov Bihar Police Prohibition SI Mock Test Series 2025 General Science Biology Human body

मानवांमध्ये, आवाज कोणत्या अवयवाद्वारे निर्माण होतो.

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स्वरयंत्र 
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जीभ 
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फुफ्फुसे
4
मध्यपटल 
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