Is it true that a vector quantity is described with both magnitude and direction an a scalar is not

Yes - a scalar has magnitude but no direction.

is it true that a scalar depnds only upon the initial and final value of the quantity; this is not the case for vector quantity?

is it true that a scalar depnds only upon the initial and final value of the quantity; this is not the case for vector quantity?

is it true that a scalar depnds only upon the initial and final value of the quantity; this is not the case for vector quantity?

thank you

if a person makes a round-trip journey, finishing where she started. The displacement for the trip is zero and the distance is some nonzeo value?

is it true that two terms can be added only when they have the same dimension or unit?

is it true that two terms can be added only when they have the same dimension or unit?

I suggest that you attempt to answer these questions yourself, and state why you believe each is true or not, and then we'll be happy to check it for you. And there is no need to write the same quetion multiple times.