Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

People make me, save me, change me, raise me. What am I?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.