Directions (): Study the following information carefully and answer the questions.
Six subjects Hindi, English, chemistry, Mathematics, Physics and Biology are taught at a coaching institute. Each subject was given a definite and continuous time slots. (i.e. there is no gap between two consecutive subjects). In a day a total 14 hours class was scheduled. A subject can start its slot from a whole hour or half hour only (i.e. a subject can start from 4 pm, 4 : 30 pm but it cannot starts from 4:13 pm, 4:03 pm) Hindi class takes place from 11 am to 12:30 pm. Only one class took place between Hindi and Mathematics. Time slot of Mathematics is twice the time slot of Hindi. Physics classes starts from 5:30 pm. Chemistry class took place between Hindi and Physics, but it did not take place immediately after or before Physics. Total slot time of English and Biology class is 4.5 hours. Number of classes that took place between Biology and Physics is same as the number of classes between chemistry and Biology. Time slot of Chemistry is 1 hour less than the time slot of Mathematics.