State Engineering Entrances - East & West India (WBJEE & GUJCET)

Modern Physics & Optics question bank (Applied Physics & Physical Chemistry)

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Q1.

[Engineering Chemistry - CET Assessment #1] Which pair of species is isoelectronic and has identical bond order according to Molecular Orbital Theory?

(A)

O2 and N2 (Bond Order = 2.5)

(B)

CO and NO (Bond Order = 2)

(C)

F2 and O2^2- (Bond Order = 2)

(D)

N2 and CO (Bond Order = 3)

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Q2.

[Engineering Physics - CET Assessment #2] A body of mass m is projected from the surface of Earth (radius R, mass M) with escape velocity v_e. What is the expression for v_e?

(A)

v_e = 2√(GM / R)

(B)

v_e = √(GM / R) = √(gR)

(C)

v_e = √(GM / 2R)

(D)

v_e = √(2GM / R) = √(2gR)

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