Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Science Chemistry Classification of Elements and Periodicity in Properties

କିଏ ପ୍ରଥମେ ପର୍ଯ୍ୟାୟ ସାରଣୀ  ପ୍ରସ୍ତାବ ଦେଲେ ?

1
ଜେଜେ ଥମସନ 
2
ମେଣ୍ଡେଲିଭ୍ 
3
ଜେମ୍ସ ଚାଡୱିକ୍ 
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ଏରନେଷ୍ଟ ରଦରଫୋର୍ଡ 
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