Question

10.Why is standard time needed for every country?​

Answer 1

Answer:

Since there will be a different time with a slight variance of longitude at every meridian, there is a need for having a standard time for practical purposes and to create less chaos and confusion. Thus the standard time zones and Central Meridians were born.

Answer 2

So that every country has a suitable time

As if all followed one time then in one place it could be noon and in another evening at 8pm