Chemistry Conduction band electrons have more mobility than holes because they Have negative charge Are lighter Experience collision less frequently Need less energy to move them Have negative charge Are lighter Experience collision less frequently Need less energy to move them ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the purest form of carbon Graphite Diamond Coal Iron Graphite Diamond Coal Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Does not follow a definite pattern Increases Decreases Remains unchanged Does not follow a definite pattern Increases Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Chemistry The Latin word formica means ant. The name formic acid is derived from this Latin word because this corrosive acid is secreted by ants to drive away their enemies this acid was first obtained by the distillation of ants ants are attracted by the odour of this acid this acid, in ancient times, was used to eliminate ant-hills this corrosive acid is secreted by ants to drive away their enemies this acid was first obtained by the distillation of ants ants are attracted by the odour of this acid this acid, in ancient times, was used to eliminate ant-hills ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxide of sulphur present in the atmosphere are washed down by rains to cause : Lowering of pH of soil Depletion of fossil fuel reserves Eutrophication in lakes Industrial smog formation Lowering of pH of soil Depletion of fossil fuel reserves Eutrophication in lakes Industrial smog formation ANSWER DOWNLOAD EXAMIANS APP
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