Chemistry Which of the following is used to remove rust stains on cloth? Petrol Kerosene Oxalic acid solution Lime Petrol Kerosene Oxalic acid solution Lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry Why is water not suitable for putting out a petrol fire ? Petrol is too inflammable to be extinguished by water The heat required for combustion of petrol is very low The oxygen content of water is isolated by petrol and thus it helps in burning Water, being heavy, slips below petrol which thus remains in contact with air and burns Petrol is too inflammable to be extinguished by water The heat required for combustion of petrol is very low The oxygen content of water is isolated by petrol and thus it helps in burning Water, being heavy, slips below petrol which thus remains in contact with air and burns ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen forms a variety of compounds in all oxidation states ranging from –3 to + 4 –3 to + 5 –3 to + 6 –3 to + 3 –3 to + 4 –3 to + 5 –3 to + 6 –3 to + 3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most commonly used chemicals in the artificial rainmaking or cloud seeding are Silver Iodide (Ag I) Sodium Chloride (NaCl) Dry Ice (Frozen CO2) All of these Silver Iodide (Ag I) Sodium Chloride (NaCl) Dry Ice (Frozen CO2) All of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of nitrogen present in ammonium sulphate is : 0.27 0.305 0.25 0.18 0.27 0.305 0.25 0.18 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is an iron ore ? Magnetite Nitrite Lignite Bauxite Magnetite Nitrite Lignite Bauxite ANSWER DOWNLOAD EXAMIANS APP
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