Boiling point elevation of an ideal solution_______________?

Byadmin March 3, 2019August 24, 2021

Boiling point elevation of an ideal solution_______________?

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

Chemical Heat Transfer

While the total emissivity of a perfect black body is unity, the same for a real body is__________________?

While the total emissivity of a perfect black body is unity, the same for a real body is__________________?

A. 0
B. 1
C. > 1
D. Between 0 and 1

Read More While the total emissivity of a perfect black body is unity, the same for a real body is__________________?
Chemical Heat Transfer

Cpμ/K is termed as the ______________ number?

Cpμ/K is termed as the ______________ number?

A. Grashoff
B. Nusselt
C. Prandtl
D. Stanton

Read More Cpμ/K is termed as the ______________ number?
Chemical Heat Transfer

A composite flat wall of a furnace is made of two materials ‘A’ and ‘B’. The thermal conductivity of ‘A’ is twice of that of material ‘B’, while the thickness of layer of ‘A’ is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material ‘A’ is________________?

A composite flat wall of a furnace is made of two materials ‘A’ and ‘B’. The thermal conductivity of ‘A’ is twice of that of material ‘B’, while the thickness of layer of ‘A’ is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material ‘A’ is________________?

A. 125
B. 133
C. 150
D. 160

Read More A composite flat wall of a furnace is made of two materials ‘A’ and ‘B’. The thermal conductivity of ‘A’ is twice of that of material ‘B’, while the thickness of layer of ‘A’ is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material ‘A’ is________________?
Chemical Heat Transfer

A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?

A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?

A. Lower heat transfer area
B. Lower steam economy
C. Higher steam economy
D. Higher solute concentration in the product

Read More A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?
Chemical Heat Transfer

The Graetz number is concerned with the___________________

The Graetz number is concerned with the___________________

A. Mass transfer between a gas and a liquid
B. Absorption with chemical reaction
C. Heat transfer in turbulent flow
D. Heat transfer in laminar flow

Read More The Graetz number is concerned with the___________________
Chemical Heat Transfer

Nusselt number (for forced convection heat transfer) is a function of the _____________ number?

Nusselt number (for forced convection heat transfer) is a function of the _____________ number?

A. Prandtl
B. Reynolds
C. Both A. & B.
D. Neither A. nor B.

Read More Nusselt number (for forced convection heat transfer) is a function of the _____________ number?

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