Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . X–rays Infra-red (IR) Ultraviolet rays (UV) Gamma rays X–rays Infra-red (IR) Ultraviolet rays (UV) Gamma rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry Petroleum is a mixture of Salts Polymers Elements Hydrocarbons Salts Polymers Elements Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is very reactive and kept in kerosene? Sodium Iodine Bromine Potassium Sodium Iodine Bromine Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Baking soda is : Sodium hydroxide Sodium bicarbonate Potassium carbonate Sodium carbonate Sodium hydroxide Sodium bicarbonate Potassium carbonate Sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the lightest element in the periodic table Helium Oxygen Hydrogen Carbon Helium Oxygen Hydrogen Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals does not react with water to produce Hydrogen ? Cadmium Potassium Lithium Sodium Cadmium Potassium Lithium Sodium ANSWER DOWNLOAD EXAMIANS APP
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