Which five letter word can be added at the end of below word to form a
valid word?

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A father's child, a mother's child, yet no one's son.

Who am I?

What can you see in the middle of March and April that you can never see in any other month?

I add 5 to 9 and get 2. The answer is correct, so what am I?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Spot 5 differences in two Christmas tree below:

The more you take me, the more you leave me behind.
Who Am I?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?