Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

How many letters are in the alphabet?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

What breaks yet never falls, and what falls yet never breaks?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

O_er_t_o_

Complete the missing letters of the given word.

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

I’m orange, I wear a green hat and I sound like a parrot. What am I?