allery28 فروری کو قومی سائنس کا دن اس دریافت کی یاد مناتا ہے:
Aکائناتی شعاعیں۔
Bنیوکلیئر فیوژن
Cرامن اثر
Dالیکٹران اسپن
Answer & Solution
Correct answer: C. رامن اثر
قومی سائنس کا دن ہر سال 28 فروری کو منایا جاتا ہے تاکہ رامن اثر کی دریافت کو نشان زد کیا جا سکے۔
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