Metal And Its Compounds - Study Mode
[#71] What is the percentage of oxygen in Al 2 (SO 4 ) 3 ?
Correct Answer
(C) 56.10%
[#72] What are the two chemicals used in black and white photography?
Correct Answer
(B) AgCl and AgBr
[#73] Which compound is produced when magnesium ribbon is burn in air?
Correct Answer
(C) magnesium oxide
[#74] Which of the following is used in making ointment for curing skin disease?
Correct Answer
(A) ZnCO 3
[#75] Which process is used for the purification of impure metals such as oxide of metals?
Correct Answer
(A) Polling