The oxide of a metal (R) can be reduced by the metal (P) and metal | Filo
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Class 12



General Principles and Processes of Isolation of Elements

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The oxide of a metal (R) can be reduced by the metal (P) and metal (R) can reduce the oxide of metal (Q). Then the decreasing order of the reactivity of metal (P), (Q) and (R) with oxygen is :

  1. P > Q > R
  2. P > R > Q
  3. R > P > Q
  4. Q > P > R
Correct Answer: Option(b)
Solution: As R can reduce oxide of Q, so R is more reactive than Q. 
P can reduce oxide of R so P is more reactive than R.
So, reactivity order is P > R > Q.
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general principles and processes of isolation of elements