Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Chlorofluorocarbons Sulphur dioxide Carbon dioxide Nitrous oxide Chlorofluorocarbons Sulphur dioxide Carbon dioxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound used in pricklyheat powder to prevent excessive sweating is Phosphoric acid Sulphuric acid Boric acid Carbonic acid Phosphoric acid Sulphuric acid Boric acid Carbonic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which amidst the following is not a gem stone ? Cat's-eye Topaz Pearl Opal Cat's-eye Topaz Pearl Opal ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Decreases Remains unchanged Does not follow a definite pattern Increases Decreases Remains unchanged Does not follow a definite pattern Increases ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the earth’s atmosphere is Argon Nitrogen Oxygen Krypton Argon Nitrogen Oxygen Krypton ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is x/6 5x/36 5x 7.2 x x/6 5x/36 5x 7.2 x ANSWER DOWNLOAD EXAMIANS APP
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