Chemical Heat Transfer

A. Increases rapidly with temperature rise
B. Decreases rapidly with temperature rise
C. In independent of pressure
D. Both B. and C.

A. Facilitate the cleaning of outer tube surface
B. Enhance turbulence
C. Hold the tubes in position
D. All A , B & C

A. 10-50
B. 100-500
C. 1000-1500
D. 5000-15000

A. Wavelength of radiation
B. Nature of the body
C. Temperature of the body
D. None of these

A. Δt
B. Δt2
C. Δt3
D. √(Δt)

A. 50 -100 Kcal/hr.m2.°C
B. 50 -100 W/m2.°K
C. 50 -100 BTU/hr. ft.2°F
D. 1000 – 1500 BTU/hr. ft.2°F

A. Basket type
B. Horizontal tube
C. Calandria

D. None of these

A. Increases
B. Decreases
C. Is not affected
D. May increase or decrease; depends on the feed

A. Increases the heating area required
B. Reduces the economy
C. Both A. and B.
D. Decreases the heating area required

A. Baffle spacing & shell diameter
B. Tube diameter & pitch
C. Viscosity, density & mass velocity of shell side fluid
D. None of these