Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Which is heavier: a ton of bricks or a ton of feathers?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

If 21x = 79x, what is the value of x?

Can you name four days which start with the letter 'T'?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

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