What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I have teeth but i don't bite. Who Am I ?

It is always ahead of me yet I can never see it. What is it?

The more it dries, the wetter it becomes. Can you tell what it is?

Which five letter word can be added at the end of below word to form a
valid word?

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Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

What can you catch but never throw?

What is so fragile that saying its name breaks it?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?