Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Buy me, smell me or deliver me, I do not change.

Who am I?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

What kind of storm is always in a rush?

Which fur should we be getting from the Lion?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

A guy in his thirties is found dead in a forest. The shocking thing about the body is that he is wearing his swimming trunks snorkel and a facemask.

For your information, the nearest lake is some 10 miles away and the sea is hundreds of miles away.

How did he die then?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?