railway RPF Constable Mock Test Series 2024 General Science Chemistry Structure of Atom

ନିମ୍ନଲିଖିତ ଉପାଦାନଗୁଡ଼ିକ ମଧ୍ୟରୁ କେଉଁଟିରେ ନ୍ୟୁଟ୍ରନ୍ ନାହିଁ?

1
ଅମ୍ଳଜାନ 
2
ନାଇଟ୍ରୋଜେନ୍
3
ହାଇଡ୍ରୋଜେନ 
4
ଏଗୁଡ଼ିକ ମଧ୍ୟରୁ କୌଣସି ଟି ନୁହେଁ 
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