on account of,because of,due to,owing to,in view of,on the grounds of
Are all the same meaning?
Can ı use these conjuctions instead of each other?
Yes and no. They all mean the same thing more or less, but a few of them are far too formal for day-to-day speech. For example:
Teacher: Why didn't you do your homework?
Student: I didn't do my homework on the grounds of a power outage.
While this is understandable and acceptable, it's not common to hear the phrase "on the grounds of" in such a case, where "because of" or "due to" would be more fitting.
In view of is a bit of a special case because it doesn't really indicate a cause and effect relationship in the same fashion as the others you listed. It's more of an associative phrase as in the below example.
Presenter: In view of your company's recent accomplishments in the field of cardiac surgery, we would like to present you with this plaque.
Judge: In view of your good behavior in the county jail, I hereby reduce your sentence from the maximum of 10 years to 5 years of incarceration....