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JEE Main Chemistry · Some Basic Concepts of Chemistry · Set 4 (Q91-120)

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  1. 91.
    In the reaction,
    1. (1) at STP is produced for every mole of HCl consumed.
    2. (2) is produced regardless of temperature and pressure for every mole of Al tat reacts.
    3. (3) is consumed for every produced.
    4. (4) at STP is produced for every mole of Al that reacts.
  2. 92.
    What is the total number of electrons present in one mole of ethane?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  3. 93.
    What amount of conc. solution should be used to prepare of ? (The concentration of solution being used is and molecular mass of
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  4. 94.
    Dimensions of pressure are same as that of
    1. (1)Energy
    2. (2)Force
    3. (3)Energy per unit volume
    4. (4)Force per unit volume
  5. 95.
    2.8 of is left after removing molecules from its ' ' mg sample. The
    mass of taken initially is Given:
    1. (1)98.3 mg
    2. (2)48.2 mg
    3. (3)196.2 mg
    4. (4)150.4 mg
  6. 96.
    Empirical formula of a compound is and its molecular mass is 90 , the molecular formula of the compound is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  7. 97.
    If molecules are removed from of , then number of moles of left are
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  8. 98.
    of solution is required to react completely with of oxalic acid solution in acidic medium. The value of is
    1. (1)0.04
    2. (2)0.01
    3. (3)0.03
    4. (4)0.02
  9. 99.
    An organic compound has carbon, hydrogen and remainder is oxygen. If its molecular weight is 342, then its molecular formula is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  10. 100.
    Molarity of a given orthophosphoric acid solution is . Its normality is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  11. 101.
    The equivalent mass of a certain bivalent metal is 20 . The molecular mass of its anhydrous chloride is
    1. (1)91
    2. (2)111
    3. (3)55.5
    4. (4)75.5
  12. 102.
    The density of ' ' solution (' molar) of is , while in molality, the concentration of the solution is (3molal). Then is (Given : Molar mass of is )
    1. (1)3.5
    2. (2)3.8
    3. (3)2.8
    4. (4)3.0
  13. 103.
    250 g solution of D-glucose in water contains 10.8% of carbon by weight. The molality of the solution is nearest to (Given: Atomic Weights are H, lu ; C, 12u; 0,16u)
    1. (1)1.03
    2. (2)2.06
    3. (3)3.09
    4. (4)5.40
  14. 104.
    What volume of a 0.8 M solution contains 100 milli moles of the solute?
    1. (1)100 mL
    2. (2)125 mL
    3. (3)500 mL
    4. (4)62.5 mL
  15. 105.
    atoms of an element weighs . The atomic mass of the element is
    1. (1)23
    2. (2)10
    3. (3)16
    4. (4)35.5
  16. 106.
    The mass of a metal, with equivalent mass 31.75 which would combine with of oxygen is
    1. (1)1
    2. (2)8
    3. (3)3.175
    4. (4)31.75
  17. 107.
    In an experiment it showed that 10 of 0.05 solution of chloride required 10 of 0.1 solution of , which of the following will be the formula of the chloride (X stands for the symbol of the element other than chlorine)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  18. 108.
    For formation of of ammonia gas, what volumes of hydrogen gas and nitrogen gas, respectively are required at NTP conditions?
    1. (1) and
    2. (2)2.24 L and
    3. (3) and
    4. (4)6.72 L and
  19. 109.
    of has been mixed with of , the amount of formed is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  20. 110.
    Molarity of liquid , if density of solution is 1.17 is
    1. (1)36.5
    2. (2)18.25
    3. (3)32.05
    4. (4)42.10
  21. 111.
    An organic compound contains (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is [At. wt. of C is 12, H is 1]
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  22. 112.
    A gas mixture contains He and by volume at a given temperature and pressure. The percentage by mass of methane in the mixture is approximately
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  23. 113.
    If 500 ml of 1 M solution of glucose is mixed with 500 ml of 1 M solution of glucose final molarity of solution will be:
    1. (1)1 M
    2. (2)0.5 M
    3. (3)2 M
    4. (4)1.5 M
  24. 114.
    The number of oxygen atoms in 4.4 of is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  25. 115.
    is doped with mole percent of . The number of cationic vacancies in of crystal is____. (Round off to the Nearest Integer). [Atomic Mass:
  26. 116.
    In Duma's method of estimation of nitrogen, of an organic compound gave of nitrogencollected at and of Hg pressure. The percentage composition of nitrogen in the compound is
    (Round off to the Nearest Integer).
    [Given : Aqueous tension at of ]
  27. 117.
    20 mL of sodium iodide solution gave 4.74 g silver iodide when treated with excess of silver nitrate solution. The molarity of the sodium iodide solution is M. (Nearest Integer value) (Given: )
  28. 118.
    The normality of in the solution obtained on mixing 100 mL of 0.1 M with 50 mL of 0.1 M NaOH is_______ N. (Nearest Integer)
  29. 119.
    The molarity of a (mass / mass) aqueous solution of a monobasic acid (X) is M (Nearest integer) [Given: Density of aqueous solution of (X) is Molar mass of the acid is ]
  30. 120.
    The molality of a 10% (v/v) solution of di-bromine solution in (carbon tetrachloride) is V. x = ________x M (Nearest integer)
    [Given : molar mass of = 160 g atomic mass of C = 12 g atomic mass of Cl = 35.5 g density of dibromme = 3.2 g density of = 1.6 ]