Options are:1. Activation enthalpy to form C is 5kJ mol^-1 less than to form D.2. D is kinetically stable product.3. C is thermodynamically stable product.4. Formation of A and B from C has highest enthalpy of activation.This question was given in JEE Main April 2019. The correct option given in the official answer key is 1. But I have a doubt if it’s not correct. Can you confirm it please?

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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