railway RRB JE (CBT I + CBT II) Mock Test 2024 General Science Chemistry Periodic Table

________  ଏକ ବାଇଗଣୀ ରଙ୍ଗର କଠିନ ହାଲୋଜେନ ଅଟେ |

1
ବ୍ରୋମିନ୍ 
2
ଫ୍ଲୋରିନ୍ 
3
କ୍ଲୋରିନ୍ 
4
ଆୟୋଡିନ୍
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