**941. The heat transfer co-efficient in film type condensation is _______________ that for dropwise condensation?**

A. Greater than**B. Lower than**

C. Is same as

D. Half

**942. The equation, (NSt × N2/3 Pr) = f/2, is the ____________ analogy ?**

A. Colburn**B. Reynolds**

C. Prandtl

D. None of these

**943. Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) ?****A. t4**

B. T4

C. 1/t4

D. 1/T4

**944. Boiling point elevation for a strong and concentrated solution is found by Duhring’s rule, which states that at the same pressure, the boiling point of a solution is a linear function of the _______________ of pure water?**

A. Boiling point**B. Dynamic viscosity**

C. Kinematic viscosity

D. Density

**945. In Biot number, the characteristic length used is the ratio of the _______________ of the solid?****A. Volume to surface area**

B. Perimeter to surface area

C. Surface area to volume

D. Surface area to perimeter

**946. Nusselt number is a function of Prandtl number and ______________ number of fluid in natural convection heat transfer?****A. Grashoff**

B. Biot

C. Stanton

D. Reynolds

**948. ______________ explains the mechanism of catalysis?****A. Activated complex theory**

B. Collision theory

C. Thermodynamics

D. None of these

**949. Which of the following factors control the design of a fluid-solid reactor ?**

A. Reaction kinetics for single particle

B. Size distribution of solids being treated

C. Flow patterns of solids and fluid in the reactor**D. All A., B. and C.**

**950. If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship ?**

A. t ∝ 1/an**B. t ∝ 1/an – 1**

C. t ∝ 1/an + 1

D. t ∝ an

**NOTEIF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.THANK YOU**