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

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

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

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He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

Look at the picture and find out which square is not linked with any of the other squares.

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

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?

What question can you never answer yes to?

Spot what is wrong here in below Picture?