Chemistry The minimum energy required for an effective collision is Threshold energy Activation energy Internal energy Free energy Threshold energy Activation energy Internal energy Free energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The two metal ions that cause hardness to water are: Calcium, Magnesium Sodium, Potassium Sodium, Magnesium Sodium, Calcium Calcium, Magnesium Sodium, Potassium Sodium, Magnesium Sodium, Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Pyrethrin used in mosquito coil is obtained from A fungus A bacterium An insect A seed plant A fungus A bacterium An insect A seed plant ANSWER DOWNLOAD EXAMIANS APP
Chemistry The luster of a metal is due to its chemical inertness presence of free electrons its high polishing its high density its chemical inertness presence of free electrons its high polishing its high density ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful Solar infrared radiation SO2 in the air Solar ultraviolet radiation CO2 in the air Solar infrared radiation SO2 in the air Solar ultraviolet radiation CO2 in the air ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called Eutrophication None of these Green house effect Smog Eutrophication None of these Green house effect Smog ANSWER DOWNLOAD EXAMIANS APP
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