Chemistry Major portion of the earth’s crust is mainly constituted by Silicon and Iron Silicon and Aluminium Oxygen and Iron Oxygen and Silicon Silicon and Iron Silicon and Aluminium Oxygen and Iron Oxygen and Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Natural Gas Coal Mica Petroleum Natural Gas Coal Mica Petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry In an oxygen molecule, two atoms are united by Three bonds One bond Four bonds Two bonds Three bonds One bond Four bonds Two bonds ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called Smog Green house effect Eutrophication None of these Smog Green house effect Eutrophication None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is used in the manufacture of safety matches? Silicon Sodium Phosphorus Graphite Silicon Sodium Phosphorus Graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitric acid does not react with Copper Iron Zinc Gold Copper Iron Zinc Gold ANSWER DOWNLOAD EXAMIANS APP
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