Rate of Reaction Jee Exam August 27, 2021

Calculate the rate of disappearance given the rate of formation. This is from the Jee Main exam on August 27, 2021 from 9:00 am to 12:00 pm.
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[@madhukarmore2850]

Thanks ma'am...really appreciate your efforts to explain in depth questions and answers..

[@mouadb9069]

Hey I just wanna know what can we calculate with this formula :
ν=(1/V)×(dx/dt)
V: is the volume in m³
dx/dt:mol/sec

[@OldSchoolChemistry]

Hi Mouad, It looks like rate of change of a reaction. The volume could be converted to Liters. Mol/L*sec is the unit for rate. I hope that helps! Thanks:)