What does this Rebus Picture means ?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

How can you make number one disappear by adding something to it?

What jumps when it walks and sits when it stands?

Can you find a rabbit in the given picture?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?