Chemistry Which of the following is used for refrigeration? Phosphine Freon Chlorine Sulphur dioxide Phosphine Freon Chlorine Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The new strain of bacteria produced by biotechnology in alcohol industry is Saccharomyces cerevisiae Bacillus subtilis Pseudomonas putida Escherichia coli Saccharomyces cerevisiae Bacillus subtilis Pseudomonas putida Escherichia coli ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a common name for the substance which irritates lachrymal glands ? Laughing Gas Anaesthetic Gas Tear Gas Noble Gas Laughing Gas Anaesthetic Gas Tear Gas Noble Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following forms of phosphorus is most reactive? Black phosphorus Red phosphorus Violet phosphorus White phosphorus Black phosphorus Red phosphorus Violet phosphorus White phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry Solder metal is an alloy of Copper and zinc Copper and tin Lead and antimony Lead and tin Copper and zinc Copper and tin Lead and antimony Lead and tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because Air exerts an upward force on the balloon Helium pushes down on the air below the balloon Helium is less dense than air The balloon is weightless Air exerts an upward force on the balloon Helium pushes down on the air below the balloon Helium is less dense than air The balloon is weightless ANSWER DOWNLOAD EXAMIANS APP
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