The decolourising action of bone charcoal is due to its capacity to -
The end of a long bone is connected to another bone by
In which type of rocks are metals like gold and copper mostly found ?
Directions : Six Persons P, Q, R, S, T and U are sitting in a circle facing one another front to front. P is sitting in front of Q, Q is sitting to the right of T and left of R, P is to the left U and right of S.
Who is sitting between P and R ?