CSIR Chemical Sciences: Questions 253 - 255 of 427

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Question number: 253

» Physical Chemistry » Principles of Quantum Mechanics » Orbital and Spin Angular Momenta

Appeared in Year: 2014

MCQ▾

Question

Simple Huckel molecular orbital theory, (June)

Choices

Choice (4) Response

a.

Considers Equation repulsion

b.

Distinguishes cis-butadiene and cyclobutadine.

c.

Distinguishes cis-butadiene and trans-butadiene.

d.

Has different coulomb integrals for non-equivalent carbons.

Question number: 254

» Physical Chemistry » Principles of Quantum Mechanics » Tunneling

Appeared in Year: 2014

MCQ▾

Question

A quantum particle with fixed initial energy Equation is allowed to strike four barrier. The transmission Probability is maximum in (Dec)

Choices

Choice (4) Response

a.

Maximum transmission probability is in: Choice A

Maximum Transmission Probability Is in: Choice A

Maximum transmission probability is in

b.

Maximum transmission probability is in: Choice B

Maximum Transmission Probability Is in: Choice B

Maximum transmission probability is in

c.

Maximum transmission probability is in: Choice C

Maximum Transmission Probability Is in: Choice C

Maximum transmission probability is in

d.

Question does not provide sufficient data or is vague

Question number: 255

» Physical Chemistry » Principles of Quantum Mechanics » Harmonic Oscillator and the Hydrogen Atom

Appeared in Year: 2013

MCQ▾

Question

Quantum mechanical virial theorem for a general potential Equation is given by Equation where T is kinetic energy operator and < > indicates expectation value. This leads to following relation between expectation value of kinetic energy and potential energy for a quantum mechanical harmonic oscillator with potential Equation (Dec)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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