Nuclear Physics

Q: Nuclei with an even number of protons plus electrons should have:

(a) :  Half-integral spins
(b) :  Integral spins
(c) :  Both half-integral & integral spins
(d) :  None of these
(e) :  None of the Above
Answer:  Integral spins
Explanation:  Protons and electrons are firmi particles with spins of 1/2 that is angualr momenta of 1/2h. Thus nuclie with even number of electrons and protons should have integral spins.

Q: Thermonuclear reaction takes place at:

(a) :  Low temperature
(b) :  High temperature
(c) :  Extra-ordinary high temperature
(d) :  Very low temperature
(e) :  None of these
Answer:  Extra-ordinary high temperature
Explanation:  

Q: "Whole number rile" was formulated by:

(a) :  Prout
(b) :  Aston
(c) :  J. J. Thomsan
(d) :  Neil Bohr
(e) :  None of the Above
Answer:  Aston
Explanation:  

Q: Neutron was discovered by

(a) :  Rutherford in 1920
(b) :  Chadwick in 1932
(c) :  Bohr in 1913
(d) :  Compton in 1927
(e) :  None of these
Answer:  Chadwick in 1932
Explanation:  

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