what does this picture(rebus) riddle means ?

How many sides does a circle have?

I’m tall when I’m young, and I’m short when I’m old. What am I?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

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

Who am I?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C