Chemical Arithamatic Chemical Arithamatic In the following reaction, which choice has value twice that of the equivalent mass of the oxidising agent SO₂ + H₂O → 3S + 2H₂O [DPMT 2000]
Chemical Arithamatic Chemical Arithamatic Complete combustion of 0.858 g of compound X gives 2.63 g of CO₂ and 1.28 g of H₂O. The lowest molecular mass X can have [Kerala MEE 2000]
Chemical Arithamatic Chemical Arithamatic The mass of 112 cm³ of CH₄ gas at STP is [Karnataka CET 2001]
Chemical Arithamatic Chemical Arithamatic What volume of Hydrogen gas, at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by Hydrogen [AIEEE 2003]
Chemical Arithamatic Chemical Arithamatic A 100 ml solution of 0.1 n HCl was titrated with 0.2 N NaOH solution. The titration was discontinued after adding 30 ml of NaOH solution. The remaining titration was completed by adding 0.25 N KOH solution. The volume of KOH required for completing the titration is [DCE 1999]
Chemical Arithamatic Chemical Arithamatic 3.92 g of ferrous ammonium sulphate crystals are dissolved in 100 ml of water, 20 ml of this solution requires 18 ml of KMnO₄ during titration for complete oxidation. The weight of KMnO4 present in one litre of the solution is [Tamilnadu CET 2002]
Chemical Arithamatic Chemical Arithamatic In standardization of Na₂S₂O₃ using K₂Cr₂O₇ by iodometry, the equivalent weight of K₂Cr₂O₇ is [IIT 2000]
Chemical Arithamatic Chemical Arithamatic One litre hard water contains 12.00 mg Mg^2+ milli equivalent of washing soda required to remove its hardness is
Chemical Arithamatic Chemical Arithamatic The set of numerical coefficient that balances the equation K₂CrO₄ + HCl → K₂Cr₂O₇ + KCl + H₂O is [Kerala CEE 2001]
Chemical Arithamatic Chemical Arithamatic If 10²¹ molecules are removed from 200mg of CO₂, then the number of moles of CO₂ left are [IIT 1983]
Chemical Arithamatic Chemical Arithamatic In a mole of water vapour at STP, the volume actually occupied or taken by the molecules (i.e., Avogadro’s No. x Volume of one molecule) is [Kerala EEE 2000]
Chemical Arithamatic Chemical Arithamatic Which of the following contains maximum number of atoms [JIPMER 2000]
Chemical Arithamatic Chemical Arithamatic A compound possesses 8% sulphur by mass. The least molecular mass is [AIIMS 2002]
Chemical Arithamatic Chemical Arithamatic The molar heat capacity of water at constant pressure is 75 JK^-1 mol ^-1. When 1.0 kJ of heat is supplied to 100 g of water which is free to expand, the increases in temperature of water is [CBSE PMT 2003]
Chemical Arithamatic Chemical Arithamatic 10 dm³ of N₂ gas and 10 dm³ of gas X at the same temperature contain the same number of molecules. The gas X is
Chemical Arithamatic Chemical Arithamatic Zinc sulphate contains 22.65% of zinc and 43.9% of water of crystallization. If the law of constant proportions is true, then the weight of zinc required to produce 20 g of the crystals will be
Chemical Arithamatic Chemical Arithamatic Irrespective of the source, pure sample of water always yields 88.89% mass of oxygen and 11.11% mass of hydrogen. This is explained by the law of [Kerala CEE 2002]
Chemical Arithamatic Chemical Arithamatic Mixture of sand and sulphur may best be separated by [Kerala CET 2001]
Chemical Arithamatic Chemical Arithamatic 100 g CaCO₃ reacts with 1litre 1 N HCl. On completion of reaction how much weight of CO₂ will be obtain [Kerala CET 2005]
Chemical Arithamatic Chemical Arithamatic 1.5 mol of O₂ combine with Mg to form oxide MgO. The mass of Mg (at. mass 24) that has combined is [KCET 2001]
