Chemistry The antiparticle of an electron is Positron Beta particles Proton Alpha particles Positron Beta particles Proton Alpha particles ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process which does not evolve CO2 in air is Organic delay Photosynthesis Burning Breathing Organic delay Photosynthesis Burning Breathing ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Oxidation of cellulose Frequent use Lack of aeration Collection of dust Oxidation of cellulose Frequent use Lack of aeration Collection of dust ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass number of an atom is equal to the number of protons and electrons the number of protons the number of neutrons the number of nucleons the number of protons and electrons the number of protons the number of neutrons the number of nucleons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Identify the metal which is non toxic in nature. Cobalt Cadmium Chromium Gold Cobalt Cadmium Chromium Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which substance is used to retard the setting action of cement? Al2O3 CaSO4, 2H2O CaO Na2O + K2O Al2O3 CaSO4, 2H2O CaO Na2O + K2O ANSWER DOWNLOAD EXAMIANS APP