Bihar Board 12th Chemistry VVI Objective Questions Model Set 3 in Hindi
Bihar Board 12th Chemistry Objective Questions and Answers Bihar Board 12th Chemistry VVI Objective Questions Model Set 3 in Hindi प्रश्न 1. ओलियम में H2SO4 के साथ और कौन-सा अवयव उपस्थित है? (a) SO2 (b) SO3 (c) H2S (d) HSO4…