Choose the incorrect sentence in eng portion ..prepositions..n choose correct sentence..

Math portion
90 angle is also called right angle
Linear motion is motion of straight line
5x=30 solve
Find proprtion one km to 600m
Pak study
Quaid present 14 points in which year
Who wrote now or never
Ghazwa badar in which hijri
Present of uk;afghanistan
President of india
Tashket agreement between
Gomal pass?
Morroco capital is Rabat etc