Study the following information and answer the questions given below it.
A blacksmith has five iron articles M, N, O, P and Q each having a different weight.
• M weighs twice as much as N.
• N weighs four and a half times as much as O.
• O weighs half as much as P.
• P weighs half as much as Q.
• Q weighs less than M but more than O.
For the following questions answer them individually