Multiple Choice
Roasting is an example of which step in the production of a metal?
A) reduction
B) alloying
C) smithing
D) refining
E) preliminary treatment
Correct Answer:
Verified
Correct Answer:
Verified
Q20: Which of the following is the acid
Q21: The commercial method of isolating magnesium from
Q22: Nitric acid is obtained commercially from<br>A)NH<sub>3</sub>.<br>B)NH<sub>4</sub>NO<sub>3</sub>.<br>C)Mg<sub>3</sub>N<sub>2</sub>.<br>D)NaNO<sub>2</sub>.<br>E)CO(NH<sub>2</sub>)<sub>2</sub>.
Q23: Which of the following statements concerning lead
Q24: Which of the following statements concerning aluminum
Q26: Most HCl(g)is obtained commercially<br>A)by reaction of MnO<sub>2</sub>
Q27: What is the acid anhydride of perchloric
Q28: A chemical method of isolating aluminum oxide
Q29: Which of the following statements concerning calcium
Q30: Which of the following equations describes the