 - 1. What is the primary industrial source of carbon disulfide in the environment?
A) Sulfur recovery plants
B) Carbon black production
C) Cellophane manufacturing
D) Rayon factories
- 2. Which byproduct is emitted during the production of carbon disulfide?
A) Sulfur dioxide
B) Carbon dioxide
C) Carbon monoxide
D) Hydrogen sulfide
- 3. As of 2004, how much carbon disulfide was emitted per kilogram of rayon produced?
A) 250 g
B) 0.341 g
C) 100 g
D) 30 g
- 4. In which country is rayon production increasing as of 2004?
A) China
B) USA
C) Japan
D) Korea
- 5. How much carbon disulfide is emitted per kilogram of carbon black produced?
A) 50 g
B) 0.341 g
C) 30 g
D) 250 g
- 6. What percentage of carbon disulfide is destroyed by incinerators in Japanese and Korean carbon black production?
A) 80%
B) 40%
C) 99%
D) 50%
- 7. When carbon disulfide is used as a solvent, what is the emission rate in Japan?
A) 80%
B) 40%
C) 99%
D) 20%
- 8. Which rayon production method does not use carbon disulfide?
A) Solvent spinning
B) Viscose process
C) Vulcanization
D) Lyocell process
- 9. Why is the lyocell process not widely used as of 2018?
A) It is more expensive than the viscose process
B) It produces lower quality rayon
C) It is illegal to operate
D) It uses more carbon disulfide
- 10. What mental health condition was famously associated with early rubber factory workers exposed to carbon disulfide?
A) Depression
B) Psychosis
C) Bipolar disorder
D) Schizophrenia
- 11. What was a historical use of carbon disulfide in the US related to animals?
A) Insect repellent
B) Burrow poison for ground squirrels
C) Pesticide for crops
D) Fertilizer additive
- 12. When was the first large epidemiological study of rayon workers conducted in the US?
A) Late 1930s
B) 1980s
C) Around 1900
D) Late 1960s
- 13. What health risks were identified in data released in the late 1960s regarding carbon disulfide exposure?
A) Skin lesions and blindness
B) Liver failure and kidney damage
C) Heart attacks and strokes
D) Lung cancer and asthma
- 14. Which company worked to prevent the publication of data regarding heart attack risks in the UK?
A) Rayon Inc.
B) Rubber Industry Group
C) Courtaulds
D) Viscose Corp
- 15. To what level were average concentrations in sampled rayon plants reduced in the 1980s compared to the 1950s?
A) 5–10 mg/m3
B) 250 mg/m3
C) 100 mg/m3
D) 20–30 mg/m3
- 16. What kind of complexes does CS2 form as a ligand?
A) delta complexes
B) pi complexes
C) sigma complexes
D) phi complexes
- 17. What is the common name for the polymer formed by CS2 under high pressure?
A) Rayon base
B) Carbonic soot
C) Bridgman's black
D) Sulfur polymer
- 18. Who discovered the polymer known as Bridgman's black?
A) Robert Boyle
B) Louis Pasteur
C) Percy Williams Bridgman
D) Charles Goodyear
- 19. What type of electrical material is the polymer 'Bridgman's black'?
A) superconductor
B) semiconductor
C) insulator
D) conductor
- 20. Carbon disulfide is a valued intermediate in the chemical synthesis of which substance?
A) chloroform
B) carbon tetrachloride
C) methane
D) sulfuric acid
- 21. Which organosulfur compounds, used in froth flotation for metal extraction, are synthesized from carbon disulfide?
A) thiols
B) thioethers
C) sulfonamides
D) xanthates
- 22. What is a drug example derived from the dithiocarbamates that carbon disulfide is a precursor to?
A) Penicillin
B) Ibuprofen
C) Metam sodium
D) Aspirin
- 23. Which specific reaction is noted for using carbon disulfide?
A) Grignard reaction
B) Diels-Alder reaction
C) Friedel-Crafts reaction
D) Barking dog reaction
- 24. What specific set of neurological and psychiatric symptoms is caused by acute CS2 poisoning?
A) encephalopathia sulfocarbonica
B) carbon sulfiditis
C) neuro-sulfur syndrome
D) viscose toxicity
- 25. Occupational exposure to carbon disulfide is associated with which health condition?
A) diabetes
B) anemia
C) stroke
D) arthritis
- 26. Which of these is a listed reproductive symptom of carbon disulfide exposure?
A) early menopause
B) testicular cancer
C) immobile or deformed sperm
D) increased fertility
- 27. What is one of the niche uses of carbon disulfide regarding grain storage?
A) insulation
B) moisture absorption
C) fireproofing
D) fumigation
- 28. What is the chemical formula of carbon disulfide?
A) CS4
B) CS2
C) CS
D) C2S
- 29. Who first prepared carbon disulfide in 1796?
A) Jöns Jacob Berzelius
B) Wilhelm August Lampadius
C) Antoine Lavoisier
D) Alexander Marcet
- 30. What name did Wilhelm August Lampadius give to carbon disulfide?
A) Carbonous sulfur
B) Liquid sulfur
C) Volcanic gas
D) Ether sulfide
- 31. What is the primary physical state of pure carbon disulfide?
A) Gas
B) Plasma
C) Liquid
D) Solid
- 32. What color is pure carbon disulfide?
A) Yellowish
B) Colorless
C) Red
D) Black
- 33. Which planet was found to have possible traces of CS2 in March 2024?
A) Mars
B) Venus
C) TOI-270 d
D) Jupiter
- 34. What product is formed when amines react with carbon disulfide?
A) Thiophosgene
B) Xanthates
C) Dithiocarbamates
D) Trithiocarbonates
- 35. What is the combustion product of carbon disulfide when reacted with oxygen?
A) Carbon monosulfide
B) Sulfur dioxide
C) Carbon monoxide
D) Sulfur trioxide
- 36. What is the result of the reaction between sodium sulfide and carbon disulfide?
A) Xanthate
B) Trithiocarbonate
C) Carbon tetrachloride
D) Dithiocarbamate
- 37. Which intermediate is formed during the chlorination of carbon disulfide to produce carbon tetrachloride?
A) Cellulose
B) Disulfur dichloride
C) Sodium trithiocarbonate
D) Thiophosgene
- 38. At what temperature is natural gas used to manufacture CS2 in the presence of catalysts?
A) 500 °C
B) 600 °C
C) 1200 °C
D) 800–1000 °C
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