1.

In the nuclear reaction \[_{92}{{U}^{238}}{{\to }_{82}}P{{b}^{206}}\], the number of alpha and beta particles decayed are [DPMT 1983; MNR 1985; Roorkee Qualifying 1998]

A.      \[4\alpha ,\,3\beta \]    
B.      \[8\alpha ,\,6\beta \]
C.      \[6\alpha ,\,4\beta \]    
D.      \[7\alpha ,\,5\beta \]
Answer» C.      \[6\alpha ,\,4\beta \]    


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