Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I have no life, but I can die. What am I?

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?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

What can go through glass without breaking it?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?