The degree of dissociation of Ca(NO3) in dilute aq.sol. containing 7.0 g of the salt per 100 g of water at 100oC is 70%. If the vapour pressure of water at 100oC is 760 mm. The vapour pressure of solution is(A) 730 (B) 735 (C) 760 (D) 746

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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