Chemistry Which one of the following elements is used in the manufacture of safety matches? Silicon Phosphorus Graphite Sodium Silicon Phosphorus Graphite Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by the pollution of environment by Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Nitrous oxide and Sulphur dioxide Carbon dioxide and Nitrogen Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Nitrous oxide and Sulphur dioxide Carbon dioxide and Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which metal is the heaviest in periodic table among the following ? Pt W Os Pb Pt W Os Pb ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has Smaller atomic radius High bond dissociation energy Stable half filled 2p sub level High nuclear charge Smaller atomic radius High bond dissociation energy Stable half filled 2p sub level High nuclear charge ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultra purification of a metal is done by : Slugging Leaching Smelting Zone melting Slugging Leaching Smelting Zone melting ANSWER DOWNLOAD EXAMIANS APP
Chemistry London smog is found in Winter during morning time Summer during morning time Summer during day time Winter during day time Winter during morning time Summer during morning time Summer during day time Winter during day time ANSWER DOWNLOAD EXAMIANS APP
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