When monkey rotate the gear, which mark will be hit 1 or 2 ?

What does below chemistry rebus means?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Keyboard words are not in alphabetical order, Why?

Which letter of the alphabet has the most water?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

Forwards I am heavy, backward I am not. What am I?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?