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Jamb 2008 Chemistry Past QuestionsQuestion 41:A hydrocarbon X with a molar mass of 26 consists of 92.3% carbon. What is its molecular formular A. C2H2 B. C3H3 C. C4H4 D. C5H5 Question 42:A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I) chloride is introduced into A. CH2 = CH - CH2 - CH3 B. CH3 CH2 - C ≡ CH C. CH3 CH2 CH2 CH3 D. CH3 - C C - CH3 Question 43:Reduction of nitroalkanes, nitrites and amides is a route for the preparation of A. Amines B. Alkenes C. Polymers D. Detergents Question 44:Reduction of alkanonoes with LialH4 produces A. Primary alkanols B. Secondary alkanols C. Tertiary alkanols D. Polyhydric alkanols Question 45:The product obtained when a mixture of benzene vapour and hydrogen are passed over nickel catalyst at 180oC is A. Cyclohexane B. Cyclopentane C. N- hexane D. N - pentane |
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