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

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

What do you answer even though it never asks you questions?

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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

What runs around the whole yard without moving?

What will you call your mother's brother's brother-in-law?

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

What is at the end of a rainbow?

You can see it everyday, But cannot touch it at will. What is it?