Chemistry Supersonic jet causes pollution by thinning of O3 layer SO2 layer CO2 layer O 2 layer O3 layer SO2 layer CO2 layer O 2 layer ANSWER DOWNLOAD EXAMIANS APP
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 oxygen helium ozone methane oxygen helium ozone methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used for refrigeration? Freon Chlorine Phosphine Sulphur dioxide Freon Chlorine Phosphine Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vulcanization of rubber is carried out by adding Ozone Carbon Sulphur Phosphorus Ozone Carbon Sulphur Phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a donor atom? Antimony Aluminium Phosphorus Arsenic Antimony Aluminium Phosphorus Arsenic ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Iron and cadmium Lead peroxide and lead Nickel and cadmium Zinc and carbon Iron and cadmium Lead peroxide and lead Nickel and cadmium Zinc and carbon ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS