state gov Kerala PSC Degree (Common Preliminary Examination) Mock Test Series 2025 Science & Technology

କିଏ ସୌର ମଣ୍ଡଳ ଆବିଷ୍କାର କରିଥିଲେ ?

1
ନ୍ୟୁଟନ୍ 
2
ଜନ ହାଡଲେ 
3
କପର୍ନିକସ୍ 
4
ଗାଲିଲିଓ
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