Is (i) log 2 is rational or irrational ? Justify your answer.

Is (ii) log 100 is rational or irrational ? Justify your answer.

Is log_3 81 rational or irrational ? Justify your answer.

Is pi a rational or irrational ? Give reasons.

Is silver is mineral or Ore? Justify your answer.

Is oxidation good or evil or both ? Justify your answer with examples.

Is a square similar to a rectangle? Justify your answer.

Every surd is an irrational, but every irrational need not be a surd. Justify your answer.

State whether the following statements are true or false . Justify your answers . (i) Every irrational number is a real number . (ii) Every rational number is a real number . (iii) Every real number need not be a rational number (iv) sqrt(n) is not irrational if n is a perfect square .

Do eukaryotic cells have restriction endonucleases? Justify your answer.