201)The number of molecules in 16 g of methane is a) b) c) d) ...

101)A chemical equation is balanced according to the law of a) multiple proportions b) reciprocal proportions c) conservation of mass d) definite proportions 102)A gas is found to have the formula . Its V.D is ...

1)According to the Stock system of nomenclature UO2SO4 is a) dioxo uranium (VI) sulphate b) dioxo uranium (IV) sulphate c) dioxo uranium (II) sulphate d) dioxo uranium (III) sulphate 2)The best method to identify trace elements is...