Can you find the missing piece of the Porsche?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

If an electric train is travelling south, then which way is the smoke going?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

How can you take 2 from 5 and leave 4?

What has many keys but can’t open a single lock?

During which month do people sleep the least?

What month of the year has 28 days?