Provide me question paper for chemistry subject examination for IIT JEE in PDF file format ?

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1. The Henry’s law constant for the solubility of N2 gas in water at 298 K is 1.0 × 105 atm. The mole fraction
of N2 in air is 0.8. The number of moles of N2 from air dissolved in 10 moles of water at 298 K and 5 atm
pressure is
(A) 4.0 × 10−4 (B) 4.0 × 10−5
(C) 5.0 × 10−4 (D) 4.0 × 10−6
Sol. (A)

4. Among cellulose, poly(vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular
force of attraction is weakest is
(A) Nylon (B) Poly(vinyl chloride)
(C) Cellulose (D) Natural Rubber
Sol. (D)

5. Given that the abundances of isotopes 54Fe, 56Fe and 57Fe are 5%, 90% and 5% respectively, the atomic
mass of Fe is
(A) 55.85 (B) 55.95
(C) 55.75 (D) 56.05

7. Among the electrolytes Na2SO4, CaCl2, Al2(SO4)3 and NH4Cl, the most effective coagulating agent for
Sb2S3 sol is
(A) Na2SO4 (B) CaCl2
(C) Al2(SO4)3 (D) NH4Cl
Sol. (C)

9. The compound(s) formed upon combustion of sodium metal in excess air is(are)
(A) Na2O2 (B) Na2O
(C) NaO2 (D) NaOH
Sol. (A, B) in dry air

10. The correct statement(s) about the compound H3C(HO)HC−CH=CH−CH(OH)CH3 (X) is(are)
(A) The total number of stereoisomers possible for X is 6
(B) The total number of diastereomers possible for X is 3
(C) If the stereochemistry about the double bond in X is trans, the number of enantiomers possible for
X is 4
(D) If the stereochemistry about the double bond in X is cis, the number of enantiomers possible for X is 2
Sol. (A, D)



12. The correct statement(s) regarding defects in solids is(are)
(A) Frenkel defect is usually favoured by a very small difference in the sizes of cation and anion
(B) Frenkel defect is a dislocation defect
(C) Trapping of an electron in the lattice leads to the formation of F-center
(D) Schottky defects have no effect on the physical properties of solids
Sol. (B, C)

26. The number of seven digit integers, with sum of the digits equal to 10 and formed by using the digits 1, 2
and 3 only, is
(A) 55 (B) 66
(C) 77 (D) 88
Sol. (C)
Coefficient of x10 in (x + x2 + x3)7

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