Chemistry Major portion of the earth’s crust is mainly constituted by Silicon and Iron Oxygen and Iron Silicon and Aluminium Oxygen and Silicon Silicon and Iron Oxygen and Iron Silicon and Aluminium Oxygen and Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry When iron rusts, its weight Increases Remains the same Decreases First increases and then decreases Increases Remains the same Decreases First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called : Vulcanization Zinc plating Alloy formation Galvanization Vulcanization Zinc plating Alloy formation Galvanization ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance that is added to make natural rubber strong and more bouncy is Chlorine Polythene Sponge Sulphur Chlorine Polythene Sponge Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has Stable half filled 2p sub level High nuclear charge Smaller atomic radius High bond dissociation energy Stable half filled 2p sub level High nuclear charge Smaller atomic radius High bond dissociation energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry Candle is a mixture of Bees wax and stearic acid Bees wax and paraffin wax Paraffin was and stearic acid Higher fatty acids and stearic acid Bees wax and stearic acid Bees wax and paraffin wax Paraffin was and stearic acid Higher fatty acids and stearic acid ANSWER DOWNLOAD EXAMIANS APP
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