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

If eleven plus two equals one, what does nine plus five equal?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Buy me, smell me or deliver me, I do not change.

Who am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

In the image below, can you find the value of an angle(y)