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An examination was held during the 2 weeks of April 3rd-Sunday to 16th Saturday. There was 1 paper for the six subjects - Physics, Chemistry, Biology, Maths, English and Hindi. Only 1 paper per day No exam on Saturdays and Sundays and Holiday on April 5th. Only 3 exams were there in a week. Chemistry was before Biology and Maths was on the next day of Hindi. The day on which the paper of biology and maths were held was the same, while that for chemistry and physics was also the same. There was no exam for 3 days between Physics and the exam prior to it. Hindi exam on Tuesday and one exam between Hindi and English exam. There was at least a gap of one day between any 2 science paper. Which of the following exam was held on April 12th ?

II. Read the following passage and answer questions 6-10 that follow : During organic reactions, a covalent bond between two carbon atoms or carbon atom and some other atom is broken and a new bond is formed. The fission of bonds can be homolytic or heterolytic forming free radicals, carbocations carbanions, carbenes, etc. This also depends upon the displacement, of electron in a bond and is governed by inductive effect, electromeric effect, reasonance and hyperconjugation. Which of the two CH_2 = CH^(-) or HC -= C^(-) is a better nucleophile?

II. Read the following passage and answer questions 6-10 that follow : During organic reactions, a covalent bond between two carbon atoms or carbon atom and some other atom is broken and a new bond is formed. The fission of bonds can be homolytic or heterolytic forming free radicals, carbocations carbanions, carbenes, etc. This also depends upon the displacement, of electron in a bond and is governed by inductive effect, electromeric effect, reasonance and hyperconjugation. Which of the following is most stable and why? CH_(3)^(-) , overset(-) CH_2 CI, overset(-) CH CI_2, ""^(-) CCI_3