CLEAN : Helium: South Africa strikes new 'gold'

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Physics, Chemistry, Science
•
9th - 10th Grade
•
Hard
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the range of helium concentrations discovered in the gas?
1% to 3%
4% to 6%
2% to 4%
3% to 5%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the average helium concentration in the wells compare to that of the United States?
It is 5 times higher.
It is about the same.
It is 10 times higher.
It is slightly lower.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the highest concentration of helium found in the wells?
8%
10%
12%
14%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What process is used to purify the gas?
Electrolysis
Distillation
Amine wash
Filtration
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What additional challenge is mentioned in the project related to stock exchanges?
Being listed on a foreign stock exchange
Being unlisted
Being dual-listed on two stock exchanges
Being listed on a single stock exchange
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