Which of the following statements regarding ozone is not correct ? (A) The Ozone molecule is angular in shape (B) The Ozone is a resonance hybrid of two structures (C) The Oxygen– Oxygen bond length in ozone is identical with that of molecular oxygen (D) Ozone is used as germicide and disinfectant for the purification of air.

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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