What does below chemistry rebus means?

I have eight fingers and two thumbs but I do not live. What Am I?

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

What does this rebus puzzle means ?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

I travel all around the world but always stay in the corner. What am I?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?