Bay of Bengal is in which state?

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 ?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

What occurs twice in a week, once in a year but never in a day?

What goes up but never comes down?

Why is a river so rich ?

Can you count the number of children in the picture below

Can you replace the question mark with the correct number in the below table sequence?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?