Chemistry Which of the following is used as a lubricant in heavy machines? Phosphorus Sulphur Bauxite Graphite Phosphorus Sulphur Bauxite Graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a chemical bond is formed ? Energy is neither released nor absorbed Energy in always released Energy is always absorbed More energy is released than is absorbed Energy is neither released nor absorbed Energy in always released Energy is always absorbed More energy is released than is absorbed ANSWER DOWNLOAD EXAMIANS APP
Chemistry When Hydrogen starts burning in air, it produces ? Carbonic Acid Methane Water Ammonia Carbonic Acid Methane Water Ammonia ANSWER DOWNLOAD EXAMIANS APP
Chemistry Calcium salts used as fertilizer is : Calcium Sulphate Calcium Carbonate Calcium Carbide Calcium Cyanide Calcium Sulphate Calcium Carbonate Calcium Carbide Calcium Cyanide ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Increases Does not follow a definite pattern Remains unchanged Decreases Increases Does not follow a definite pattern Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following forms of phosphorus is most reactive? Black phosphorus White phosphorus Violet phosphorus Red phosphorus Black phosphorus White phosphorus Violet phosphorus Red phosphorus ANSWER DOWNLOAD EXAMIANS APP