Chemistry In upper layer of atmosphere ozone is formed by The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The combination of oxygen molecules ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because Its atomic number is 2 It is one of the constitutents of water It is lighter than air It is a noble gas Its atomic number is 2 It is one of the constitutents of water It is lighter than air It is a noble gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Natural rubber is a polymer of Isoprene Styrene Vinyl acetate Propene Isoprene Styrene Vinyl acetate Propene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most commonly used chemicals in the artificial rainmaking or cloud seeding are Sodium Chloride (NaCl) Silver Iodide (Ag I) All of these Dry Ice (Frozen CO2) Sodium Chloride (NaCl) Silver Iodide (Ag I) All of these Dry Ice (Frozen CO2) ANSWER DOWNLOAD EXAMIANS APP
Chemistry One of the following is used to dissolve noble metals. That is Sulphuric acid Aqua ragia Hydrochloric acid Nitric acid Sulphuric acid Aqua ragia Hydrochloric acid Nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element required for solar energy conversion ? Silicon Ultra pure carbon Tantalum Beryllium Silicon Ultra pure carbon Tantalum Beryllium ANSWER DOWNLOAD EXAMIANS APP
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