The basicity of aniline is weaker in comparison to that of methyl amine due to A. hyperconjugative effect of Me-group in MeNH2 B. resonance effect of phenyl group in aniline C. lower molecular weight of methyl amine as compared to that of aniline D. resonance effect of –NH2 group in MeNH2

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