a colourless solid ‘X’ on heating evolved CO2 and also gave a white residue ‘Y’.Which is soluble in water.’Y’ also gave CO2 when treated with dil.H2SO4.’X’ is

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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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