On electrical decomposition of 150 ml dry and pure O₂, 10% of O₂ gets changed to O, then the volume of gaseous mixture after reaction and volume of remaining gas left after passing in turpentine oil will be

Question: On electrical decomposition of 150 ml dry and pure O₂, 10% of O gets changed to O, then the volume of gaseous mixture after reaction and volume of remaining gas left after passing in turpentine oil will be

(a) 145 ml 

(b) 149 ml

(c) 128 ml 

(d) 125 ml


Correct Answer: (a) 145 ml


Question: On electrical decomposition of 150 ml dry and pure O₂, 10% of O₂ gets changed to O, then the volume of gaseous mixture after reaction and volume of remaining gas left after passing in turpentine oil will be (a) 145 ml (b) 149 ml (c) 128 ml (d) 125 ml




More Question

  1. The weight of 1 x 10²² molecules of CuSO₄.5H₂O is [IIT 1991]
  2. If NA is Avogadro’s number then number of valence electrons in 4.2 g of nitride ions (N^3-)
  3. Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g of BaCO₃ (Atomic mass of Ba=137) will be [CBSE PMT 2000]
  4. The atomic weights of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms, how many atoms are present in 2x g of B
  5. Total number of atoms represented by the compound CuSO₄.5H₂O is [BHU 2005]
  6. What is the concentration of nitrate ions if equal volumes of 0.1 M AgNO₃ and 0.1 M NaCl are mixed together [CPMT 1983; NCERT 1985]
  7. Boron has two stable isotopes, ¹⁰B (19%) and ¹¹B (81%). The atomic mass that should appear for boron in the periodic table is [CBSE PMT 1990]
  8. When potassium permanganate is titrated against ferrous ammonium sulphate, the equivalent weight of potassium permanganate is [CPMT 1988]
  9. In the reaction 2Na₂S₂O₃ + I → Na₂S₄O₆ + 2NaI, the equivalent weight of Na₂S₂O₃ (mol. wt. = M) is equal to
  10. 1 mol of CH₄ contains
  11. For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be [MP PET 1996]
  12. In chemical scale, the relative mass of the isotopic mixture of oxygen atoms (O¹⁶, O¹⁷, O¹⁸) is assumed to be equal to [Bihar MADT 1981]
  13. When 100 ml of 1 M NaOH solution and 10 ml of 10ml of NH₂SO₄ solution are mixed together, the resulting solution will be [DPMT 1982]
  14. The sulphate of a metal M contains 9.87% of M. This sulphate is isomorphous with ZnSO₄.7H₂O. The atomic weight of M is [IIT 1991]
  15. Sulphur forms the chlorides S₂Cl₂ and SCl₂. The equivalent mass of sulphur in SCl₂ is [EAMCET 1985; Pb. CET 2001]
  16. 1 amu is equal to
  17. The modern atomic weight scale is based on [MP PMT 2002]
  18. Which one of the following properties of an element is not variable [Bihar MADT 1981]
  19. Which property of an element is always a whole number [MP PMT 1986]
  20. Which one of the following pairs of compounds illustrates the law of multiple proportion [EAMCET 1989]
  21. The law of definite proportions is not applicable to nitrogen oxide because [EAMCET 1981]

Previous Post Next Post