What is so fragile that saying its name breaks it?

Count the Triangle in the figure given below:

Find the hidden tiger in the given optical illusion ?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What came first, the chicken or the egg?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

The more you take me, the more you leave me behind.
Who Am I?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?