Chemistry Which of the following is used as non-stick coating for cooking utensils? Perspex Polystyrene Teflon Styrofoam Perspex Polystyrene Teflon Styrofoam ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has 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 Stable half filled 2p sub level ANSWER DOWNLOAD EXAMIANS APP
Chemistry In an oxygen molecule, two atoms are united by Three bonds Two bonds Four bonds One bond Three bonds Two bonds Four bonds One bond ANSWER DOWNLOAD EXAMIANS APP
Chemistry J.J. Thomson’s proposed model of atom is generally called ________ model. Plum and cake Cream and pudding Cream and cake Plum and pudding Plum and cake Cream and pudding Cream and cake Plum and pudding ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas emitted by power stations causes acid rain? Carbon dioxide Sulphur dioxide Helium Nitrogen Carbon dioxide Sulphur dioxide Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Sodium carbonate Alum Potassium Permangante Lime Sodium carbonate Alum Potassium Permangante Lime ANSWER DOWNLOAD EXAMIANS APP
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