choice question. 1. A) Complete the statements by choosing the ri The frequency of audible sound is A) 20 Hz to 2000 Hz B) Less than 20 Hz C) Less than 200 Hz D) More than 20000 H To avoid sprouting, potatoes are exposed to A) Polarization B) Preservative C) Radiati The chemical symbol for calcium is C).CI A) Ca B) CCu koi question ta puchheo na ji pakka jot hi ho na fake ta ni
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Answer:
1) A) 20 Hz to 2000 Hz
2) B) Preservative
3) A) Ca
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