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Vapour density of a metal chloride is 66. Its oxide contains 53% metal. The atomic weight of the metal is [Bihar MADT 1982]

Question: Vapour density of a metal chloride is 66. Its oxide contains 53% metal. The atomic weight of the metal is [Bihar MADT 1982]

(a) 21 

(b) 54

(c) 27.06 

(d) 2.086


Correct Answer: (c) 27.06


Vapour density of a metal chloride is 66. Its oxide contains 53% metal. The atomic weight of the metal is [Bihar MADT 1982] (a) 21 (b) 54 (c) 27.06 (d) 2.086



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  1. In the following reaction, which choice has value twice that of the equivalent mass of the oxidising agent SO₂ + H₂O → 3S + 2H₂O [DPMT 2000]
  2. 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]
  3. The mass of 112 cm³ of CH₄ gas at STP is [Karnataka CET 2001]
  4. 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]
  5. 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]
  6. 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]
  7. In standardization of Na₂S₂O₃ using K₂Cr₂O₇ by iodometry, the equivalent weight of K₂Cr₂O₇ is [IIT 2000]
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  10. If 10²¹ molecules are removed from 200mg of CO₂, then the number of moles of CO₂ left are [IIT 1983]
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