If I breastfeed my baby (inside a close room where no one would be present) while I am in ablution (wudhu) condition would the ablution break as we know one of the reason to break the ablution is to open up a hidden parts of body.

2. As we know that we are only allowed to do sujood to the Almighty Allah, but after creating Adam why did Allah ask all the Jinns and Angels to do Sujood to him when Iblis denied to do so?

  This is not true. Exposing awrah does not break one's wudhu.

There is no evidence that proves exposing the awrah breaks the wudoo. So if there is no authentic evidence stating the nullification of wudoo through exposing one’s awrah, then it cannot cause one’s wudhu to be broken.

The origin of all things is that it is permissible until proven otherwise.

As for the second question, the prostration was one of respect for what Allah had created, Adam.

Although prostration is only done to the Almighty Allah, the prostration of the angels to Adam was because of the command of Allah, and obeying the command of Allah is in fact worshipping Him.

Allah says in the Qur'an:

إنَّ اللهَ يَحْكُمُ مَا يُرِيْدُ

“Certainly, Allah ordains what He wants.” [1]

[1] Quran, 5:1.