I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

One fine day, an intellectual man came to the emperor's court with the aim of testing Birbal's wittiness. In order to do this, he challenged Birbal to answer his question and hence prove that he was as intelligent and witty as he was said to be.
He asked Birbal, Do you want me to ask one difficult question or a hundred easy ones?
Since both Akbar and Birbal had had a tough day and were eager to leave, Birbal hastily told the intellectual to ask him a single difficult question.
Intellectual: OK. Tell me what came first into the world, the egg or the chicken?
Of course, the chicken, Birbal replied with a smile.
This time with a note of victory in his voice, the intellectual asked Birbal, How will you demonstrate that?
What did Birbal say?

Replace the question mark with the correct number below.

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Can you name an animal whose killing cannot be performed without spilling your own blood?

Spot the cat in the picture below

Can you find the key in the picture below?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?