Chemistry Supersonic jet causes pollution by thinning of O3 layer SO2 layer O 2 layer CO2 layer O3 layer SO2 layer O 2 layer CO2 layer ANSWER DOWNLOAD EXAMIANS APP
Chemistry Quartz is made of Sodium Sulphate Calcium Sulphate Sodium Silicate Calcium Silicate Sodium Sulphate Calcium Sulphate Sodium Silicate Calcium Silicate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following contains high content of lead? Low octane fuel Cooking gas Coal High octane fuel Low octane fuel Cooking gas Coal High octane fuel ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Magnesium Silicon Oxygen Iron Magnesium Silicon Oxygen Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission? China, India, European Union, USA USA, India, China, European Union European Union, China, USA, India China, USA, European Union, India China, India, European Union, USA USA, India, China, European Union European Union, China, USA, India China, USA, European Union, India ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief constituent of natural gas is: Nitrogen Methane Helium Propane Nitrogen Methane Helium Propane ANSWER DOWNLOAD EXAMIANS APP
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