railway RRB Technician Grade 3 Mock Test 2024 General Science Chemistry Chemical Reaction

ગરમ કરવા પર લેડ નાઈટ્રેટ શું આપે છે?

1
PbO2 અને NO2
2
PbO અને NO2
3
PbO અને NO
4
PbO2 અને NO
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