Bauxite is the principal ore of which element(s) ?
A) B
B) Tl
C) Al
D) Ga
E) all of these
Correct Answer:
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Q12: Which of the following statements about the
Q13: Which of the following is not a
Q14: What is the metallurgical process of roasting?
A)A
Q15: Choose the most metallic element.
A)As
B)P
C)Bi
D)N
E)Sb
Q16: Which of the following statements is true?
A)An
Q18: In the first stage of the Bayer
Q19: At which step in the production of
Q20: Which element commonly has both +1 and
Q21: The valence electrons in a metal crystal
Q22: Which of the following is initially obtained
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