Ore pitch blende is main source of [DPMT 1985; RPET 1999]

1.	Ore pitch blende is main source of [DPMT 1985; RPET 1999]
A.	\[Ra\]
B.	\[Ce\]
C.	\[Th\]
D.	\[Mg\]
Answer» B. \[Ce\]

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Ore pitch blende is main source of [DPMT 1985; RPET 1999]

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