Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

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?

What do you answer even though it never asks you questions?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What is black when you buy it, red when you use it, and gray when you throw it away?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Who can jump higher than a Mountain?