Chemistry The most important ore of lead is Magnetite Siderite Pyrolusite Galena Magnetite Siderite Pyrolusite Galena ANSWER DOWNLOAD EXAMIANS APP
Chemistry One carat of diamond is equal to 100 mg 150 mg 200 mg 250 mg 100 mg 150 mg 200 mg 250 mg 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 Smog None of these Eutrophication Green house effect Smog None of these Eutrophication Green house effect ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass is a Homogeneous mixture Element Heterogeneous mixture Compound Homogeneous mixture Element Heterogeneous mixture Compound ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is a : Liquid metal Solid non-metal Solid metal Liquid non-metal Liquid metal Solid non-metal Solid metal Liquid non-metal ANSWER DOWNLOAD EXAMIANS APP
Chemistry The minimum energy required for an effective collision is Activation energy Internal energy Free energy Threshold energy Activation energy Internal energy Free energy Threshold energy ANSWER DOWNLOAD EXAMIANS APP
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