Chemistry The element used for making solar cells is Silicon Calcium Sodium Magnesium Silicon Calcium Sodium Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The water pollution in river is measured by the dissolved amount of Nitrogen Chlorine Oxygen Ozone Nitrogen Chlorine Oxygen Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry A colloidal system in which a liquid is dispersed in a liquid is called Gel Precipitate Sol Emulsion Gel Precipitate Sol Emulsion ANSWER DOWNLOAD EXAMIANS APP
Chemistry Number of neutrons in an atom of hydrogen is Zero Three One Two Zero Three One Two ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Heavy metals Noble gases Light metals Halogens Heavy metals Noble gases Light metals Halogens 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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