The reactions of Cl2 gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two (different) oxoacids of chlorine, P and Q, respectively. The Cl2 gas reacts with SO2 gas, in presence of charcoal, to give a product R. R reacts with white phosphorus to give a compound S. On hydrolysis, S gives an oxoacid of phosphorus, T. 1. P and Q, respectively, are the sodium salts of (A) hypochlorus and chloric acids (B) hypochlorus and chlorus acids (C) chloric and perchloric acids (D) chloric and hypochlorus acids 2. R, S and T, respectively, are (A) SO2Cl2, PCl5 and H3PO4 (B) SO2Cl2, PCl3 and H3PO3 (C) SOCl2, PCl3 and H3PO2 (D) SOCl2, PCl5 and H3PO4

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

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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