Atomic Structure (NEET (National Eligibility cum Medical Entrance Test) Chemistry): Questions 21  25 of 73
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Question number: 21
» Atomic Structure » DeBroglie's Relationship
Question
Calculate momentum of radiations of wavelength 0.33 nm.
Choices
Choice (4)  Response  

a.  Kg m sec^{1} 

b.  Kg m sec^{1} 

c.  Kg m sec^{1} 

d.  Kg m sec^{1} 

Question number: 22
» Atomic Structure » Bohr Model of Hydrogen Atom
Question
One of the postulate Bohr’s atomic model is
Choices
Choice (4)  Response  

a.  The electron can move in only those circular orbits where the angular momentum is a whole number multiply of h/2 

b.  Uncertainty in measurement is not due to lack of any experimental technique but due to nature of subatomic particle itself 

c.  The emission and absorption of energy does not take place continuously but in the form of quantum. 

d.  None of the above 

Question number: 23
» Atomic Structure » Quantum Mechanical Model of Atom
Question
The minimum energy required overcoming the attracted forces between electron and surface of Ag metal is 7.52 x 10^{19} J. What will be the maximum K. E. of electron ejected out from Ag which is being exposed to U. V. light of = 360 Å
Choices
Choice (4)  Response  

a.  67.68 x 10^{19} Joule 

b.  6.96 x 10^{19} Joule 

c.  57.68 x 10^{19} Joule 

d.  36.38 x 10^{19} Joule 

Question number: 24
» Atomic Structure » Thomson and Rutherford Atomic Models
Question
Rutherford’s experiment on scattering of alpha particles shows that atom has
Choices
Choice (4)  Response  

a.  Neutrons 

b.  Nucleus 

c.  Proton 

d.  Electron 

Question number: 25
» Atomic Structure » DeBroglie's Relationship
Question
Calculate the wavelength of a moving electron having 4.55 x 10^{25} J of kinetic energy 
Choices
Choice (4)  Response  

a.  6.27 x 1meter 

b.  7.27 x 1 meter 

c.  12.27 x1meter 

d.  6.27 x 1 meter 
