Chemistry Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs? Nitrogen Methane Helium Hydrogen Nitrogen Methane Helium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry An oxidising agent is a In a chemical reaction its oxidation number increases An electron acceptor It releases H2 in a chemical reaction An electron donor In a chemical reaction its oxidation number increases An electron acceptor It releases H2 in a chemical reaction An electron donor ANSWER DOWNLOAD EXAMIANS APP
Chemistry PH scale ranges from 0 – 7 None 0 – 14 8 – 14 0 – 7 None 0 – 14 8 – 14 ANSWER DOWNLOAD EXAMIANS APP
Chemistry A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be Zinc Aluminium Copper Silver Zinc Aluminium Copper Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultra purification of a metal is done by : Slugging Zone melting Smelting Leaching Slugging Zone melting Smelting Leaching ANSWER DOWNLOAD EXAMIANS APP
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