Chemistry Submarines move under water. They have engines that run on Diesel Batteries Steam Petrol and oxygen Diesel Batteries Steam Petrol and oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is emitted into air by Steam engine Burning coal Burning garbage Coal fire Steam engine Burning coal Burning garbage Coal fire ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by The action of nitrogen on oxygen in atmosphere The combination of oxygen molecules Subjecting oxygen to high pressure The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere The combination of oxygen molecules Subjecting oxygen to high pressure The action of ultraviolet rays on oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon dioxide Ozone Water vapour Carbon monoxide Carbon dioxide Ozone Water vapour Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal compound commonly found in Sindhoor or Kumkum is based on Zinc Tin Copper Lead Zinc Tin Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Refining Calcination Roasting Smelting Refining Calcination Roasting Smelting ANSWER DOWNLOAD EXAMIANS APP
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