As per your request here I am sharing the IIT JEE previous papers for physics:

9. 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 disolocation defect
(C) Trapping of an electron in the lattice leads to the formation of F-centre
(D) Schottky defects have no effect on the physical properties of solids
Key. (B, C)
Sol. Frenkel defect is usually favoured by a very large difference in the sizes of cation and anion. In Schottky
defect pairs of cations and anions left the crystal lattice as a result density decreases. Hence (B) and (C) are
correct.

10. The compound(s) that exhibit(s) geometrical isomerism is(are)
(A) [Pt(en)Cl2] (B) [Pt(en)2]Cl2
(C) [Pt(en)2Cl2]Cl2 (D) [Pt(NH3)2Cl2]












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Attached Files

IIT JEE previous papers for physics.pdf (1.41 MB, 63 views)