Quantum MCQs

Prof. Fazal Rehman Shamil
Last modified on August 23rd, 2021

Quantum MCQs Questions Answers

 

on the basis of quantum efficiency can be done into which categories classification of photochemical reaction.

(A).  4

(B).  2

(C).  3

(D).  5

(E). None of these

Multiple Choice Question Answer:  c

.With the number of photons absorbed for expressing the relationship between the number of molecules reacting, the concept of which one was introduced?

(A).  photon degradation

(B).  photon analysis

(C).  quantum mechanism

(D).  quantum efficiency

(E). None of these

Multiple Choice Question Answer:  d

. By which of the following Quantum efficiency is given?

(A). nq/Nhcλ

(B). nNhc/qλ

(C). ncλ/Nhq

(D). qλ/nNhc

(E). None of these

Multiple Choice Question Answer:  b

. which of the following is correct if a reaction obeys Einstein law, quantum yield?

(A).  0

(B).  more than 1

(C).  less than 1

(D).  1

(E). None of these

Multiple Choice Question Answer:  d

. The reaction has which quantum yield when the number of molecules decomposed is less than one per photon,.

(A).  variable

(B).  high

(C).  unpredictable

(D).  low

(E). None of these

Multiple Choice Question Answer:  d

. The reaction has which quantum yield when two or more molecules are decomposed per photon?

(A).  unpredictable

(B).  low

(C).  high

(D).  variable

(E). None of these

Multiple Choice Question Answer:  c

. Decomposition of HI has quantum yield equals to which one?

(A).  1

(B).  0

(C).  2

(D).  4

(E). None of these

Multiple Choice Question Answer:  c

. __________________ is the condition for high and low quantum yield.

(A).  for forming the products the molecules in the activated state should be largely unstable and decompose

(B).  in the different energy state all the reactant molecules should be

(C).  temperature dependent the reactivity of the molecules should be

(D).  quantum field=1

(E). None of these

Multiple Choice Question Answer:  a

 

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