Chemistry Acid rain is caused by the pollution of environment by Carbon dioxide and Nitrogen Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Nitrous oxide and Sulphur dioxide Carbon dioxide and Nitrogen Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Nitrous oxide and Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lustre of the metals is because of High density, due to closed packing of atoms High polish Absorption of light due to the presence of cavities Reflection of light due to the presence of free electrons High density, due to closed packing of atoms High polish Absorption of light due to the presence of cavities Reflection of light due to the presence of free electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is nitrogen carbon oxygen hydrogen nitrogen carbon oxygen hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to sublimation of sodium to emit yellow colour The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow The low ionisation energy of sodium sublimation of sodium to emit yellow colour The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Its ability to absorb all other colours except yellow The low ionisation energy of sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following acids serves as an electrolyte in a lead storage battery? Hydrochloric acid Nitric acid Sulphuric acid Lactic acid Hydrochloric acid Nitric acid Sulphuric acid Lactic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is known as the 'brown coal'? Anthracite Lignite Coke Bituminous Anthracite Lignite Coke Bituminous ANSWER DOWNLOAD EXAMIANS APP
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