Decode this picture on T-Shirt and tell what it says ?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What does below chemistry rebus means?

I cannot talk, but I always reply when spoken to. What am I?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

A man dies of old age on his 25 birthday. How is this possible?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Which alphabet letter is a question?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Find the hidden tiger in the given optical illusion ?