An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is___________________?

Byadmin March 3, 2019August 24, 2021

An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is___________________?

A. 4000
B. 9000
C. 4600
D. 3000

Chemical Heat Transfer

For heat flow through very thick walled cylinder, use ___________mean radius?

For heat flow through very thick walled cylinder, use ___________mean radius?

A. Arithmetic
B. Logarithmic
C. Geometric
D. Either A. or C.

Read More For heat flow through very thick walled cylinder, use ___________mean radius?
Chemical Heat Transfer

What is the thermal conductivity of a perfect heat insulator ?

What is the thermal conductivity of a perfect heat insulator ?

A. Zero
B. One
C. ∞
D. Between 0 and ∞

Read More What is the thermal conductivity of a perfect heat insulator ?
Chemical Heat Transfer

For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature) ?

For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature) ?

A. Δt
B. Δt2
C. Δt3
D. √(Δt)

Read More For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature) ?
Chemical Heat Transfer

In Joule’s experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2. Neglecting the heat capacity of agitator, the temperature of water (in °C) is________________?

In Joule’s experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2. Neglecting the heat capacity of agitator, the temperature of water (in °C) is________________?

A. 40.5
B. 34.4
C. 26.8
D. 25

Read More In Joule’s experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2. Neglecting the heat capacity of agitator, the temperature of water (in °C) is________________?
Chemical Heat Transfer

A _____________ evaporator employs an annular downtake?

A _____________ evaporator employs an annular downtake?

A. Basket type
B. Horizontal
C. Long tube vertical
D. None of these

Read More A _____________ evaporator employs an annular downtake?
Chemical Heat Transfer

Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

A. 0.4
B. 0.5
C. 0.6
D. 0.7

Read More Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

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