What has no start, end, or centre?

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

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

Solve the mathematical equation in the picture below.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?