Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is methane ozone oxygen helium methane ozone oxygen helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry 24 carat of diamond is equal to 95% mg 200 g 200 mg 91% gold 95% mg 200 g 200 mg 91% gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry Pollutant from motor car exhaust that causes mental disease is NO2 Lead SO2 Hg NO2 Lead SO2 Hg ANSWER DOWNLOAD EXAMIANS APP
Chemistry The important metal used with iron to produce stainless steel is Aluminium Tin Carbon Chromium Aluminium Tin Carbon Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is not an anasthetic agent in surgical operations? Nitrous oxide Acetone Chloroform Ether Nitrous oxide Acetone Chloroform Ether ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is used in storage batteries? Zinc Tin Copper Lead Zinc Tin Copper Lead ANSWER DOWNLOAD EXAMIANS APP
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