Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Infrared Radio-waves Ultraviolet Visible Infrared Radio-waves Ultraviolet Visible ANSWER DOWNLOAD EXAMIANS APP
Chemistry The green colour seen in firework displays is due to the chloride salt of : Barium Strontium Calcium Sodium Barium Strontium Calcium Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical that is used to ripen mangoes is Calcium sulphide Calcium carbonate Calcium carbide Calcium chloride Calcium sulphide Calcium carbonate Calcium carbide Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bakelite is a co-polymer of Phenol and Cinnaldehyde Benzaldehyde Formaldehyde Acetaldehyde Cinnaldehyde Benzaldehyde Formaldehyde Acetaldehyde ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 12 18 Zero 6 12 18 Zero 6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Supersonic jet causes pollution by thinning of O3 layer CO2 layer O 2 layer SO2 layer O3 layer CO2 layer O 2 layer SO2 layer ANSWER DOWNLOAD EXAMIANS APP
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