What has to be broken before you can use it?

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 jumps when it walks and sits when it stands?

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

Find the last number in the series below:

voN luJ yaM raM ---

What you cannot hold but it is yours?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

who is silent in the parliament?