What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

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John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

John was piloting a plane behind a car but was never able to overtake it. Why?

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

The more of this there is, the less you see. What is it?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

How many times can you subtract the number 5 from 25?

If six children and two dogs were under an umbrella, how come none of them got wet?