I have branches, but no fruit, trunk or leaves. What am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

I look at you, you look at me I raise my right, you raise your left. What am I?

How can you tell a raw egg from a hard-boiled egg?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Who always enjoys poor health?

What happened when the wheel was invented?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?