Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Carbon dioxide Sulphur dioxide Nitrous oxide Chlorofluorocarbons Carbon dioxide Sulphur dioxide Nitrous oxide Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Silicon Oxygen Calcium Nitrogen Silicon Oxygen Calcium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the inert gases can form compounds? Xenon Argon Krypton Helium Xenon Argon Krypton Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Galena is a mineral of Calcium Gold Lead Iron Calcium Gold Lead Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The name of unreactive gas is Nitrogen Carbon dioxide Oxygen Hydrogen Nitrogen Carbon dioxide Oxygen Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Excimer laser Semiconductor laser Gas laser Dye laser Excimer laser Semiconductor laser Gas laser Dye laser ANSWER DOWNLOAD EXAMIANS APP
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