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

ନିମ୍ନଲିଖିତ ଯୁଗଳଗୁଡ଼ିକ ମଧ୍ୟରୁ କେଉଁଟି 'ଉପାଦାନ - ଭାଲେନସି' ସଠିକ୍ ଅଟେ ?

I. ବୋରନ୍ - ୨

II ଫ୍ଲୋରାଇନ୍ -

1
I ନୁହେଁ କି II ମଧ୍ୟ ନୁହେଁ 
2
ଉଭୟ I ଏବଂ II
3
କେବଳ II
4
କେବଳ I
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