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

At what time between 2 and 3 O'Clock will the hands of a clock be together ?

At what time between 5.30 and 6 will the hands of a clock be at right angles?

At what time between 5 and 6 will the two hands of a watch coincide?

The angle(in degrees) between the minute hand and the hour hand of a clock when the time is 4:20, is:

At what angle the hands of a clock are inclined when it is half past 8?