Chemistry The presence of ozone in the stratosphere is responsible for Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth Increasing the average global temperature in recent years Higher rate of photosynthesis Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth Increasing the average global temperature in recent years Higher rate of photosynthesis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to iodise common salt ? Potassium iodide Potassium iodate Iodine Sodium iodide Potassium iodide Potassium iodate Iodine Sodium iodide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major constituent of air is oxygen hydrogen carbon dioxide nitrogen oxygen hydrogen carbon dioxide nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry What particles move around the nucleus of an atom and are negatively charged? Neutrons Positrons Protons Electrons Neutrons Positrons Protons Electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused due to pollution of atmosphere by Oxides of nitrogen and sulphur None of these Oxides of carbon and nitrogen Oxides of nitrogen and phosphorous Oxides of nitrogen and sulphur None of these Oxides of carbon and nitrogen Oxides of nitrogen and phosphorous ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in making smoke bombs? Carbon Phosphorus Hydrogen Sulphur Carbon Phosphorus Hydrogen Sulphur ANSWER DOWNLOAD EXAMIANS APP
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