What has to be broken before you can use it?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

A bomb exploded in a room full of married couples and no one died. How?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

What has many teeth, but cannot bite?

Spot 5 differences in two Christmas tree below:

Find out which of the given views in the picture is accurately the top view of the given pyramid.

What is the next number?

77, 49, 36, 18 ?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.