Chemistry Which of the following could be used as fuel in propellant or rockets ? Liquid Nitrogen + Liquid Oxygen Liquid Oxygen + Liquid Argon Liquid Hydrogen + Liquid Nitrogen Liquid Hydrogen + Liquid Oxygen Liquid Nitrogen + Liquid Oxygen Liquid Oxygen + Liquid Argon Liquid Hydrogen + Liquid Nitrogen Liquid Hydrogen + Liquid Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which is mainly responsible for the green house effect is: Carbon monoxide Ozone Oxygen Carbon dioxide Carbon monoxide Ozone Oxygen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The sewage obtained from water closets and urinals is known as Sanitary waste Sullage Garbage Industrial waste Sanitary waste Sullage Garbage Industrial waste ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Refining Smelting Calcination Roasting Refining Smelting Calcination Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electric fuse is an alloy of Copper and iron Zinc and lead Carbon and tin Tin and lead Copper and iron Zinc and lead Carbon and tin Tin and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Insecticides Leaded gasoline Tobacco Sewage Insecticides Leaded gasoline Tobacco Sewage ANSWER DOWNLOAD EXAMIANS APP
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