Food Engineering Questions and Answers - Tea and Coffee Processing

1. Which of the following is NOT a step in Black tea manufacture?
a) Drying/Firing
b) Rolling
c) Withering
d) Lump formation

  Discussion

Answer: d
Explanation: Lump formation is NOT a step in Black tea manufacture

2. Which of the following is NOT a step in Black tea manufacture?
a) Rolling of the leaves on a horizontal roller
b) Putting the leaves in a vacuum drier to remove moisture
c) Roll breaking using sieves
d) None of the mentioned

  Discussion

Answer: d
Explanation: All the statements given are true.

3. Oxidation/ fermentation of tea leaves is done for Black tea manufacture such that the enzymes in the leaves come out and start to oxidize. This gives tea its flavour.
a) True
b) False

  Discussion

Answer: a
Explanation: Oxidation/ fermentation of tea leaves is done for Black tea manufacture such that the enzymes in the leaves come out and start to oxidize. This gives tea its flavour. This statement is true.

4. Difference of Green tea from Black tea is that ________
a) The oxidation process is omitted
b) The tea leaves are steamed in a pan before being rolled so that the enzymes don’t interact with air and oxidize
c) The oxidation process is omitted & the tea leaves are steamed in a pan before being rolled so that the enzymes don’t interact with air and oxidize
d) None of the mentioned

  Discussion

Answer: c
Explanation: The difference of Green tea from Black tea is that the oxidation process is omitted. The tea leaves are steamed in a pan before being rolled so that the enzymes don’t interact with air and oxidize

5. Oolong Tea is _____
a) Mixture of Green and Black teas
b) Partial Oxidation takes place
c) The leaves are greenish brown
d) All of the mentioned

  Discussion

Answer: d
Explanation: All the statements given are true.

6. Company xyz claims that its Coffee is really expensive because they only choose the best coffee beans. What does that mean?
a) The coffee beans have been strip picked
b) The coffee beans have been selectively picked
c) The coffee cherry beans irrespective of how ripe they’re, are picked
d) None of the mentioned

  Discussion

Answer: b
Explanation: The coffee beans have been strip picked means that the coffee cherry beans irrespective of how ripe they’re, are picked altogether. But, in the process of being selectively picked, only the ripe coffee beans are picked. This task requires extensive amount of labour and hence the Company xyz sells coffee which is more expensive.

7. Which of the following sentences is untrue?
a) The ideal moisture content in the coffee beans ready to be packed is about 11%
b) In wet type of process, the pulp is first removed and then washed away with water
c) The remaining bean is made wet and passed through rotating drums which separate them in size
d) None of the mentioned

  Discussion

Answer: d
Explanation: All the sentences given are true.

8. Ripened berries sink in water and unripe ones float on water.
a) True
b) False

  Discussion

Answer: a
Explanation: Ripened berries (heavier ones) sink in water and unripe ones float on water

9. Which of the following is untrue?
a) Bean size is expressed in terms of 1/64 of an inch
b) Hulling and polishing of beans is done
c) Bean size is expressed in terms of 1/64 of an inch & Hulling and polishing of beans is done
d) None of the mentioned

  Discussion

Answer: c
Explanation: Both the mentioned statements about coffee are true.

10. The process of tasting coffee is called _____
a) Cupping
b) Green Coffee
c) Cupping & Green Coffee
d) None of the mentioned

  Discussion

Answer: a
Explanation: The process of tasting coffee is called Cupping.