"Qunut" is a supplication type of prayer made while standing in Islam. For example, it is sunnah (recommended) to supplicate with qunut in the witr prayer during the entire year.
Qunoot is highly recommended in Prayers but not obligatory in any Salah.
Thank you for your question. There is no requirement for the hands to be together.
May you always be successful
We can pray for non Muslim parents, relatives and friends who are still alive, to Allah (SWT) to guide them to The Right Path and enlighten their hearts and minds with the light of the Truth.
For those who passed away as non Muslims, we can pray to Allah (SWT) to deal with them with His Mercy.
We are not allowed to seek forgiveness for those who insisted and died on Shirk (polytheism) as we read in Quran, Sura Tawbah, verse 113: It is not proper for the Prophet and the believers to seek forgiveness for the Mushriks, even though they be of kin.
Yes it is permissible to look at the Ka'bah during Qunoot because looking at the Ka'bah is a worship by itself. Nevertheless, it is always recommended during Qunoot of Prayers to look at your palms (inner side of your hands).
Qunoot as Qunoot should be in Arabic according to the precaution, but Du'a , any Du'a (supplication) is permissible during Prayers in any language.