Explain why
A spinning cricket ball in air does not follow a parabolic trajectory.

A hard struck cricket ball does not produce waves. Why?

Explain why PbI_4 does not exist.

Explain the following : (1) Nickel does not form low spin octahedral complexes.

Explain why trachea does not collapse?

Explain why is roasting of zinc blende carried out in controlled supply of air.

Explain why trachea does not collapse ?

Explain why : Lithium on being heated in air mainly forms the monoxide and not peroxide.

In which of the following examples of motion, can the body be considered approximately a point object: (a) a railway carriage moving without jerks between two stations. (b) a monkey sitting on top of a man cycling smoothly on a circular track. (c) a spinning cricket ball that turns sharply on hitting the ground. (d) a tumbling beaker that has slipped off the edge of a table.