here I am giving you question paper for joint entrance examination for admission in Indian institute of technology colleges in PDF file with it .. so you can get it easily…

**some questions are given below :**
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

3. The reaction of P4 with X leads selectively to P4O6. The X is

(A) Dry O2 (B) A mixture of O2 and N2

(C) Moist O2 (D) O2 in the presence of aqueous NaOH

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

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) NH4C

9. The compound(s) formed upon combustion of sodium metal in excess air is(are)

(A) Na2O2 (B) Na2O

(C) NaO2 (D) NaOH

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

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

29. In a triangle ABC with fixed base BC, the vertex A moves such that cosB + cosC = 2 A 4sin

2

. If a, b and c

denote the lengths of the sides of the triangle opposite to the angles A, B and C, respectively, then

(A) b + c = 4a (B) b + c = 2a

(C) locus of point A is an ellipse (D) locus of point A is a pair of straight lines