Interesting Quiz On CFC Test
Chlorofluorocarbons often called CFCs, are chemical compounds often used as refrigerants. This is because they are non-inflammable and non-toxic. The uses of CFC gained much popularity in the 1950s when the cost of purchasing them reduced due to an improved method of synthesis. Do you know the implication of the use of CFC in the environment? Tackle the following questions if you do.
CFC Test Questions and Answers
- 1.
CFCs are often produced as derivatives of the following except
- A.
Butane
- B.
Ethane
- C.
Propane
- D.
Methane
Correct Answer
A. ButaneExplanation
CFCs, or chlorofluorocarbons, are a type of synthetic organic compound that contain chlorine, fluorine, and carbon atoms. They were commonly used in aerosol propellants, refrigerants, and solvents. Butane, ethane, propane, and methane are all hydrocarbons, meaning they only contain carbon and hydrogen atoms. CFCs are not derivatives of these hydrocarbons, so the correct answer is Butane.Rate this question:
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- 2.
The most common representative of Freon is
- A.
Dichlorodifluoromethane
- B.
Dichloromethane
- C.
Cyclohexane
- D.
Catecholamine
Correct Answer
A. DichlorodifluoromethaneExplanation
Dichlorodifluoromethane is the most common representative of Freon. Freon is a brand name for a group of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) that were widely used as refrigerants and propellants. Dichlorodifluoromethane, also known as CFC-12 or R-12, was one of the most commonly used CFCs. It has a chemical formula of CCl2F2 and was widely used in air conditioning and refrigeration systems until it was phased out due to its harmful effects on the ozone layer.Rate this question:
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- 3.
CFCs are used in the production of the following save:
- A.
Liquid soap
- B.
Aerosol
- C.
Refrigerants
- D.
Propellants
Correct Answer
A. Liquid soapExplanation
CFCs, or chlorofluorocarbons, are not used in the production of liquid soap. CFCs are primarily used as refrigerants, propellants, and in aerosol products. They were commonly used in these products in the past, but their use has been greatly reduced due to their harmful effects on the ozone layer. Therefore, the correct answer is not liquid soap.Rate this question:
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- 4.
What is the boiling point of methane on the Celsius scale?
- A.
-89 degree
- B.
-161.5 degree
- C.
-141 degree
- D.
-123 degree
Correct Answer
B. -161.5 degreeExplanation
The boiling point of methane on the Celsius scale is actually approximately -161.5°C. At this temperature, methane transitions from its liquid state to its gaseous state. It's important to note that methane is a gas at room temperature and pressure, so its boiling point represents the temperature at which it will condense into a liquid under atmospheric pressure.Rate this question:
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- 5.
Freon containing bromine are signified by ____________
- A.
Three numbers
- B.
Five numbers
- C.
Four numbers
- D.
Six numbers
Correct Answer
C. Four numbersExplanation
Freon containing bromine is signified by four numbers. Freon is a type of refrigerant that is used in air conditioning and cooling systems. The numbers used to signify different types of Freon represent the chemical composition of the refrigerant. In the case of Freon containing bromine, it is identified by four specific numbers.Rate this question:
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- 6.
What is the boiling point of Trichlorofluoromethane on Celsius scale?
- A.
23.77 degree
- B.
27.20 degree
- C.
34.98 degree
- D.
42.78 degree
Correct Answer
A. 23.77 degreeExplanation
Trichlorofluoromethane, also known as CFC-11, has a boiling point of 23.77 degrees Celsius on the Celsius scale.Rate this question:
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- 7.
Which of these is the formula for Chlorotrifluoromethane?
- A.
CCl
- B.
CCIF³
- C.
CICF³
- D.
CCIF
Correct Answer
B. CCIF³Explanation
The correct answer is CClF3. Chlorotrifluoromethane is a compound formed by one carbon atom bonded to one chlorine atom and three fluorine atoms. The formula CClF3 represents this arrangement, with the symbol C representing carbon, Cl representing chlorine, and F representing fluorine.Rate this question:
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- 8.
Who pioneered the synthesis of CFCs?
- A.
Joseph Priestly
- B.
Sampson Wheels
- C.
Ewart Jordan
- D.
Frédéric Swarts
Correct Answer
D. Frédéric SwartsExplanation
Frédéric Swarts is the correct answer because he is known for pioneering the synthesis of chlorofluorocarbons (CFCs). CFCs are a group of organic compounds that were widely used in various industries, including as refrigerants and aerosol propellants. Swarts conducted extensive research on the synthesis and properties of CFCs in the early 20th century, making significant contributions to the field. His work laid the foundation for the widespread use of CFCs, although their environmental impact and contribution to ozone depletion were later discovered.Rate this question:
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- 9.
CFCs replaced the following compounds as refrigerants except
- A.
Hydrogen Sulphide
- B.
Sulphur dioxide
- C.
Chloromethane
- D.
Ammonia
Correct Answer
A. Hydrogen SulpHideExplanation
CFCs, or chlorofluorocarbons, were commonly used as refrigerants in the past. They were chosen because they were non-toxic, non-flammable, and had excellent heat transfer properties. However, it was discovered that CFCs were causing damage to the ozone layer. As a result, international agreements were made to phase out the use of CFCs. Hydrogen Sulphide, on the other hand, was not used as a refrigerant and therefore was not replaced by CFCs.Rate this question:
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- 10.
Who was the first person to discover presence of CFCs in the air?
- A.
Sigmund Freud
- B.
Abraham Maslow
- C.
Adams Salt
- D.
James Lovelock
Correct Answer
D. James LovelockExplanation
James Lovelock is credited with discovering the presence of CFCs (chlorofluorocarbons) in the air. CFCs are synthetic compounds that were widely used in aerosol propellants, refrigerants, and solvents. Lovelock, a British scientist, conducted research in the 1970s and 1980s that led to the discovery of CFCs in the atmosphere. His findings were instrumental in raising awareness about the detrimental effects of CFCs on the ozone layer and ultimately led to the global phase-out of these chemicals.Rate this question:
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Apr 03, 2024Quiz Edited by
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Jul 14, 2018Quiz Created by
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