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From which mineral is radium obtained - |
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|
(a) |
Limestone |
(b) |
Haematitie |
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|
(c) |
Pitchblende |
(d) |
Rutile |
|
|
From which mineral is radium obtained - |
|
|||
|
(a) |
Limestone |
(b) |
Haematitie |
|
|
(c) |
Pitchblende |
(d) |
Rutile |
|