Structure of Atom- Test paper 05, Chemistry, class XI, Cbse test paper Class 11 Notes | EduRev

Class 11 : Structure of Atom- Test paper 05, Chemistry, class XI, Cbse test paper Class 11 Notes | EduRev

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CBSE TEST PAPER-05 
CLASS - XI CHEMISTRY (Structure of Atom)   
 
Topic:-Quantum Mechanical Model of the Atom 
Marks: 20 
 
1.  States Heisenberg’s Uncertainty Principle.       [1] 
2. Give the mathematical expression of uncertainty principle.    [2] 
3. How would the velocity be effected if the position is known?    [1] 
4. We don not see a car moving as a wave on the road why?     [1] 
5. Give the de – Broglie’s relation.         [1] 
6. Why cannot the motion of an electron around the nucleus be determined  
 accurately?           [2] 
7. Calculate the uncertainty in the momentum of an electron if it is confined to a 
 linear region of length 
10
1 10 .
- ×       [2] 
8. Calculate the uncertainty in the velocity of a wagon of mass 4000kg whose  
 position is known accurately of 10m ±       [1] 
9. What is the physical significance of 
2
? up?       [1] 
 
 
 
 
 
 
 
 
 
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