An aromatic compound ‘A’ (C8H6) reacts with dil. H2SO4 and HgSO4 giving ‘B’, which upon reaction with NaOH and I2 gives compounds ‘C’ and ‘D’. ‘D’ upon reaction with soda lime gives a hydrocarbon ‘E’, which on reaction with CH3COCl in the presence of anhy- drous aluminium chloride gives ‘B’. Identify ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’ and write the equa- tions of the reactions involved ?

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consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

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