Read the given Bar Graph which shows the percentage of marks obtained by Brinda in different subjects in an assessment test.

Observe the bar graph and answer the following questions.
(i) 1 unit = ___ % of marks on vertical line.
(ii) Brinda has scored maximum marks in _____ subject.
(iii) Brinda has scored minimum marks in ______ subject.
(iv) The percentage of marks scored by Brinda in Science is _____
(v) Brinda scored 60% marks in the subject ______
(vi) Brinda scored 20% more in _______ subject than _____ subject.