General Science- Kis Tatv Ki Kami Ke Karan ghengha Rog Ho Jata Hai ?

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Q.12300: किस तत्व की कमी के कारण घेंघा रोग हो जाता है ?
A.
B.
C.
D.
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किस तत्व की कमी के कारण घेंघा रोग हो जाता है ? General Science in hindi,   Calcium question answers in hindi pdf  iodine questions in hindi, Know About Nitrogen General Science online test General Science notes in hindi quiz book    Phosphorus