At what time between 4 and 5 o’clock will the hands of a watch point in opposite directions

At what time between 7 and 8 o’clock will be the hands of the clock be in the same straight line but, not together

A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min,48 sec fast at 2 p,m on the following Monday. When was it correct