Chemistry Which of the following is not a method of preparing oxygen? Decomposition of manganese dioxide Fractional distillation of liquid air Electrolysis of water Decomposition of potassium permanganate Decomposition of manganese dioxide Fractional distillation of liquid air Electrolysis of water Decomposition of potassium permanganate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas Will be doubled Will be reduced to half Remains unchanged Will increase four-fold Will be doubled Will be reduced to half Remains unchanged Will increase four-fold ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 4 x 6.02 x 1023 gram 1.00 gram 4.00 gram 8.00 gram 4 x 6.02 x 1023 gram 1.00 gram 4.00 gram 8.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry Extensively used nitrogenous fertilizer is Nitro-lime Ammonium sulphate Ammonium nitrate Urea Nitro-lime Ammonium sulphate Ammonium nitrate Urea ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electric iron has a heating element made of : Nichrome Copper Zinc Tungsten Nichrome Copper Zinc Tungsten ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following fibres catches fire least ? Cotton Nylon Terricot Rayon Cotton Nylon Terricot Rayon ANSWER DOWNLOAD EXAMIANS APP
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