Chemical Engineering Basics Mcqs


Q.  Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?

a. (r2 – r1)/r1. r2
b. r1. r2/(r2 – r1)
c. (r2 + r1)/r1. r2
d. r1. r2/(r2 + r1)



 
 

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