Material Balances for Batch and Semi-Batch Processes

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Water flowing in plants from tap through a pipe, the process is an example of which of the following process?
Batch
Semi-batch
Neither of them
Batch & Semi-batch
Explanation:
Since water enters the pipe from one end and leaves from another end, it is a batch process.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Two reactants enter a vessel and a reaction is carried out, it is an example of which of the following?
Batch
Semi-batch
Neither of them
Batch & Semi-batch
Explanation:
Since material enters the vessel and operated but does not comes out, so it is a semi-batch process.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Tap filling a jar with water is an example of which of the following process?
Batch
Semi-batch
Neither of them
Batch & Semi-batch
Explanation:
Since water is entering the jar and does not leave, it is a semi-batch process.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
A semi-batch process differs from an open process in which of the following?
Input
Output
Generation
Consumption
Explanation:
A semi-batch process does not have output, while an open system has output.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Water boiling in a container is an example of which of the following?
Batch
Semi-batch
Neither of them
Batch & Semi-batch
Explanation:
Since nothing is entering in the container but steam is leaving the container, it is neither a batch process nor a semi-batch process.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
A semi-batch process differs from a closed process in which of the following?
Input
Output
Generation
Consumption
Explanation:
A semi-batch process has some input, while a closed process does not have input.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
A semi-batch process is that in which material enters the system and _____ which of the following should fill the gap?
Leaves
Does not leaves
Half of it leaves
None of the mentioned
Explanation:
A semi-batch process is that in which material enters a system and does not leave.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
In a batch process, 70 Kg of H2O and 10 Kg of NaOH and some other reactants enters the vessel, if 100 Kg of the product leaves the vessel, what is the percentage of H2O in the product?
10%
30%
70%
100%
Explanation:
Percentage of H2O in the product = (70/100)*100 = 70%.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
10 Kg of oil is burnt in a container and taken off from the container if 1% of oil remains on the container wall, how much oil is taken off?
8.9 Kg
9 Kg
9.9 Kg
10 Kg
Explanation:
Amount of oil taken off = 10*(1 – 1/100) = 9.9 Kg.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
A batch process is that in which material enters the system and _____ which of the following should fill the gap?
Leaves
Does not leaves
Half of it leaves
None of the mentioned
Explanation:
A batch process is that in which material enters the system and operated and leaves.