Chemistry In which of the following substances all carbon atoms are quaternary in nature ? Diamond Graphite Napthalene Teflon Diamond Graphite Napthalene Teflon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Coal Petroleum Natural Gas Mica Coal Petroleum Natural Gas Mica ANSWER DOWNLOAD EXAMIANS APP
Chemistry Solder is an alloy of Lead, zinc Copper, lead Sodium, lead Tin, lead Lead, zinc Copper, lead Sodium, lead Tin, lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Ultraviolet rays (UV) X–rays Infra-red (IR) Gamma rays Ultraviolet rays (UV) X–rays Infra-red (IR) Gamma rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Oxidation of cellulose Frequent use Lack of aeration Collection of dust Oxidation of cellulose Frequent use Lack of aeration Collection of dust ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Nitrous oxide Coloured impurities Oxygen Nitrogen dioxide Nitrous oxide Coloured impurities Oxygen Nitrogen dioxide ANSWER DOWNLOAD EXAMIANS APP
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