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

Which five letter word can be added at the end of below word to form a
valid word?

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If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you find a five letter word that is left with only two letters if one is removed?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

When it is alive we sing, when it is dead we clap our hands. What is it?