Chemistry Which substance is used to retard the setting action of cement? CaO Na2O + K2O CaSO4, 2H2O Al2O3 CaO Na2O + K2O CaSO4, 2H2O Al2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of different elements have Different atomic number and different number of valence electrons Different atomic number and same eletronic configu-ration Same number of electrons and neutrons Same atomic number and same electronic configuration Different atomic number and different number of valence electrons Different atomic number and same eletronic configu-ration Same number of electrons and neutrons Same atomic number and same electronic configuration ANSWER DOWNLOAD EXAMIANS APP
Chemistry One of the constituents of tear gas is Ethanol Ethane Ether Chloropicrin Ethanol Ethane Ether Chloropicrin ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? Zero 6 12 18 Zero 6 12 18 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bleaching action of moist sulphur di-oxide is because of its Acidic property Reducing property Basic property Oxidising property Acidic property Reducing property Basic property Oxidising property ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas that usually causes explosions in coal mines is Air Carbon monoxide Methane Hydrogen Air Carbon monoxide Methane Hydrogen ANSWER DOWNLOAD EXAMIANS APP
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