Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Calcium None of these Magnesium Manganese Calcium None of these Magnesium Manganese ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove rust stains on cloth? Lime Oxalic acid solution Petrol Kerosene Lime Oxalic acid solution Petrol Kerosene ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? There is a violent explosion. There is no reaction. There is a crackling sound The paper ignites There is a violent explosion. There is no reaction. There is a crackling sound The paper ignites ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Generator Power transmittor Uninterrupted power supply (UPS) Battery Generator Power transmittor Uninterrupted power supply (UPS) Battery ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of different elements have Different atomic number and same eletronic configu-ration Different atomic number and different number of valence electrons Same number of electrons and neutrons Same atomic number and same electronic configuration Different atomic number and same eletronic configu-ration Different atomic number and different number of valence electrons Same number of electrons and neutrons Same atomic number and same electronic configuration ANSWER DOWNLOAD EXAMIANS APP
Chemistry White coal is Uranium None of these Diamond Hydro-electricity Uranium None of these Diamond Hydro-electricity ANSWER DOWNLOAD EXAMIANS APP
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