railway RRB JE (CBT I + CBT II) Mock Test 2024 General Science Chemistry Chemistry in Everyday Life

નીચેનામાંથી કોનું કેલોરીફિક મૂલ્ય સૌથી વધુ છે?

1
બાયોગેસ
2
હાઇડ્રોજન
3
મિથેન
4
LPG
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