Chemistry The percentage of oxygen in air is approximately 0.78 0.01 1 0.21 0.78 0.01 1 0.21 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element which is used for vulcanizing rubber Phosphorus Sulphur Silicon Bromine Phosphorus Sulphur Silicon Bromine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The octane number of zero is assigned to 3-methyl octane n-heptane 2-methyl octane iso-octane 3-methyl octane n-heptane 2-methyl octane iso-octane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The addition of gypsum to portland cement helps in : Reduction in the cost of cement Increasing the strength of cement Preventing rapid setting of cement Rapid setting of cement Reduction in the cost of cement Increasing the strength of cement Preventing rapid setting of cement Rapid setting of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water is Distilled water Rain water Ground water Tap water Distilled water Rain water Ground water Tap water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 6, 8, 4 2, 8, 10 2, 10, 8 2, 8, 8, 2 2, 6, 8, 4 2, 8, 10 2, 10, 8 2, 8, 8, 2 ANSWER DOWNLOAD EXAMIANS APP
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