Shadow of a pole 24m long = 56 m Shadow of a pole 1 m long = 56/24 m Shadow of a building 40m long = (56 /24) × 40 m = 93m
The most reactive among the halogens is-
Which of the following is a physical change?
The most reactive among the halogens is-
Formation of ozone hole is maximum over
Which of the following is a physical change?
Alum stops bleeding in minor cuts because of
The gas used for filling weather balloons is-
The important ore of aluminium is-
The acid used in lead storage cells is-
Which metal is extracted from seawater?
