Chemistry The most abundant constituent of atmospheric air is : Hydrogen Carbon Oxygen Nitrogen Hydrogen Carbon Oxygen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the highest quality of hard coal? Lignite Anthracite Bituminous Peat Lignite Anthracite Bituminous Peat ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hydrogen is not found in atmosphere because It immediately combines with oxygen to form water It is the lightest gas It is absorbed by plants It is highly inflammable It immediately combines with oxygen to form water It is the lightest gas It is absorbed by plants It is highly inflammable ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Iron and cadmium Zinc and carbon Nickel and cadmium Lead peroxide and lead Iron and cadmium Zinc and carbon Nickel and cadmium Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Photo chemical smog is a resultant of the reaction among CO, O2 and peroxy acetyl nitrate in the presence of Sunlight CO, CO2 and NO2at low temperature NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight High concentration of NO2, O3, and CO in the evening CO, O2 and peroxy acetyl nitrate in the presence of Sunlight CO, CO2 and NO2at low temperature NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight High concentration of NO2, O3, and CO in the evening ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is used to dilute oxygen in the gas cylinders used by divers ? Helium Krypton Argon Neon Helium Krypton Argon Neon ANSWER DOWNLOAD EXAMIANS APP
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