Four metals A, B, C and D have E° values: – 0.76V, 0.34V, –2.13 V and 0.44V respectively. What is the correct order of their increasing oxidising power? (a) A > B > C > D (b) D > B > A > C (c) D > A > B > C (d) C> D > A > B

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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