How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What is the longest word in the dictionary?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

What has lots of eyes, but can’t see?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

How can a man go eight days without sleep?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?