Solution:

He was walking

Solution:

A bubble.

A bubble is lighter than air, but no matter how many people try, they cannot lift or hold a bubble in their hands because it will burst upon contact.

Solution:

Baby girl because she is a little bigger.

Solution:

There are no easy ways to double your money unless you put it in front of a mirror.

Solution:

The baby

Solution:

You like orange fruit and hate orange color or vice versa.

Solution:

Pizza

Explanation:
Pizza is served to people with 2 E's and rest are served Burgers.

Solution:

1

Explanation:
Because I have only one mouse and not a pair required for reproduction.

Solution:

It

Solution:

Downwards