I have teeth but i don't bite. Who Am I ?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Who is that with a neck and no head, two arms and no hands? What is it?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Can you find a number that lies one third of the distance between 1/3 and 2/3?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)