36. The atomic orbital is

1. 1. the circular path of the electron

   
   
   

   2. elliptical shaped orbit.

   
   
   

   3. three dimensional field around nucleus

   
   
   

   4. the region in which three is maximum probability of finding electron

   
   
   

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   NA

   Correct Option: D

   NA

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37. Match colunm-I and column-II
    

    	Column-I		Column-II
    A.	Thomson model	1.	Dual nature of electron
    B.	Rutherford model	2.	Nuclear theory
    C.	Bohr's model	3.	Plum pudding model
    D.	de-Broglie theory	4.	Concept of quantization of energy

1. 1. A-3, B-4, C-2, D-1

   
   
   

   2. A-2, B-4, C-1, D-2

   
   
   

   3. A-2, B-1, C-3, D-4

   
   
   

   4. A-3, B-2, C-4, D-1

   
   
   

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   NA

   Correct Option: D

   NA

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38. Nuclear particles responsible for holding all nucleons together are

1. 1. electrons

   
   
   

   2. neutrons

   
   
   

   3. positrons

   
   
   

   4. mesons

   
   
   

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   NA

   Correct Option: D

   NA

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39. Meson was discovered by

1. 1. Powell

   
   
   

   2. Seaburg

   
   
   

   3. Anderson

   
   
   

   4. Yukawa

   
   
   

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   NA

   Correct Option: D

   NA

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40. Neutron was discovered by

1. 1. J.J. Thomson

   
   
   

   2. Chadwick

   
   
   

   3. Rutherford

   
   
   

   4. Priestley

   
   
   

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   NA

   Correct Option: B

   NA

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