MCQ PracticeA train is 125 m long. If the train takes 30 sec to cross a tree by the railway line, then the speed of the train is :Subject: MathematicsTopic: Time DistanceA14 km/hrB15 km/hrC16 km/hrD12 km/hrCorrect Answer: BPractice QuizBack to MCQsRelated MCQsUnbroken series of organisms arranged from ancestor to descendant sequence is___Percentage of water in brain cells is_______?Branch of biology which deals with the study of chemical components and chemical