What is the Surname of Barbie Doll?

Count the number of lines in the image below ?

Why 1729 is a magic number? Answer Logically.

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

In the image below, can you find the value of an angle(y)

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

Decode below rebus
D
N
A
T
S , D

What is so fragile that saying its name breaks it?

Keyboard words are not in alphabetical order, Why?