Silver and mercury are less reactive than copper and as copper will displace those metals from its salt solution which are less reactive than it.

We know that zinc layer prevents iron from getting rusted. Through galvanization method, iron is covered by a coat of zinc. Where there is no chance to corrosion of Iron metal.

The incident rays coming from the distant tree placed will be parallel to the principal axis and as we know the rays parallel to the principal axis, after refraction by convex lens, will pass through the principal focus. Therefore, a ...

As urine is actually stored in the urinary bladder, which is a muscular organ and under our nervous control. The only incorrect statement is that urine is stored in the urethra.

Egestion involves elimination of the remaining undigested food Material by rupturing of cell wall at any time.