I think the higher than expected number of incorrect answers may be due to people finding the question a little unclear. Here is another way of phrasing what I am guessing was intended:

Is the value for Col2 updated in the row where the value of Id =1 ?

As the question was written, "where the value of Id =1 updated" implies that the value of Id = 1 somehow updated as part of the update statement. I'm not sure that's what was intended.