What does below rebus means ?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

I look at you, you look at me, I raise my right, you raise your left. What am I?

How do you go from 98 to 720 using just one letter?

Can you solve the maths in the below-given picture equation?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

What does below chemistry rebus means?