Teaching Jharkhand (JSSC) PRT (1 to 5) Mock Test 2023 General Science Chemistry Periodic Table

ପୃଥିବୀରେ ଉପଲବ୍ଧ ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁଟି ସବୁଠାରୁ କଠିନ ପଦାର୍ଥ?

1
ସୁନା 
2
ଲୌହ 
3
ଡାଇମଣ୍ଡ
4
ପ୍ଲାଟିନମ୍
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