Chemistry Major portion of the earth’s crust is mainly constituted by Oxygen and Silicon Silicon and Aluminium Silicon and Iron Oxygen and Iron Oxygen and Silicon Silicon and Aluminium Silicon and Iron Oxygen and Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry One property of ammonia is It is a yellowish gas It is insoluble in water Its aqueous solution turns red litmus blue It is a odourless gas It is a yellowish gas It is insoluble in water Its aqueous solution turns red litmus blue It is a odourless gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamonds are glittering and attractive because light incident on them undergoes Multiple internal reflections Multiple surface reflections Highest refraction Hundred percent transmission Multiple internal reflections Multiple surface reflections Highest refraction Hundred percent transmission ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sour taste of lemon is due to the presence of which of the following ? Acetic acid Citric acid Oxalic acid Formic acid Acetic acid Citric acid Oxalic acid Formic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a greenhouse gas ? Carbon dioxide Sulphur dioxide Nitrogen Helium Carbon dioxide Sulphur dioxide Nitrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following group of gases contributes to the 'Green House Effect'? Carbon monoxide and Sulphur dioxide Ammonia and Ozone Carbon dioxide and Methane Carbon tetraflouride and Nitrous oxide Carbon monoxide and Sulphur dioxide Ammonia and Ozone Carbon dioxide and Methane Carbon tetraflouride and Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
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