Can you find the key in the picture below?

I am quite hot but become too cold if you remove the first two letters. What am I?

What can jump higher than a building?

Solve the mathematical equation in the picture below.

Solve this riddle by finding the odd one out from the rest.

What demands an answer, but asks no questions

What does the below rebus puzzle mean?

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *