KVPY Government Jobs Exams

XeF6 hydrolyses to give an oxide. The structure of XeF6 and the oxide, respectively, are-
(A) octahedral and tetrahedral
(B) distorted octahedral and pyramidal
(C) octahedral and pyramidal
(D) distorted octahedral and tetrahedral

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KVPY Other Question

At a distance l from a uniformly charged long wire, a charged particle is thrown radially outward with a velocity u in the direction perpendicular to the wire. When the particle reaches a distance 2l from the wire
its speed is found to be sqrt(2) u . The magnitude of the velocity, when it is a distance 4l away from the wire, is
(ignore gravity) MnO4
– oxidizes (i) oxalate ion in acidic medium at 333 K and and (ii) HCl. For balanced chemical
equations, the ratios [MnO4
– : C2O4
2–] in (i) and [MnO4
– : HCl] in (ii), respectively, are-
(A) 1 : 5 and 2 : 5 (B) 2 : 5 and 1 : 8 (C) 2 : 5 and 1 : 5 (D) 5 : 2 and 1 : 8