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

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?

I have Rs.50 and I spend it in the way as below.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

The more of this there is, the less you see. What is it?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

What is the word or phrase?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Which digit occurred maximum times between the number 1 and 1000?