What Deficiency does the below rebus represent?

VIT_MIN

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

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

What is more useful when it is broken?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

I have no life, but I can die. What am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?