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Physics

One quarter sector is cut from uniform circular disc of radius R. This sector has mass M. It is made to rotate about a line perpendicular to its plane and passing through the center of the original disc. Its moment of inertia about the axis of rotation is

(a)

MR²

(b)

MR²

(c)

MR²

(d)

MR²

Chemistry

According to molecular orbital theory which of the following statements about the magnetic character and bond order is correct regarding O₂⁺

(a)	Paramagnetic and Bond order < O₂	(b)	Paramagnetic and Bond order > O₂
(c)	Diamagnetic and Bond order < O₂	(d)	Diamagnetic and Bond order > O₂

Mathematics

(a)

2

(b)

-2

(c)

1/2

(d)

-1/2

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