Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Noble gases Light metals Heavy metals Halogens Noble gases Light metals Heavy metals Halogens ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound to which H2 does not add is Tetraphenyl ethylene Tetra – a –naphthylethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene Tetraphenyl ethylene Tetra – a –naphthylethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas does not form the part of atmosphere ? Nitrogen Chlorine Helium None of these Nitrogen Chlorine Helium None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a method of preparing oxygen? Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water Fractional distillation of liquid air Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water Fractional distillation of liquid air ANSWER DOWNLOAD EXAMIANS APP
Chemistry German silver used for making utensils is an alloy of Copper, silver, nickel Copper, zinc, nickel Copper, zinc, aluminium Copper, nickel, aluminium Copper, silver, nickel Copper, zinc, nickel Copper, zinc, aluminium Copper, nickel, aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry If lime water is kept in the air, it turns milky due to presence of : Sulphurdioxide Nitrogen Carbondioxide Oxygen Sulphurdioxide Nitrogen Carbondioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
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