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WorksheetsQuiz on Organic Chemicals in the Environment
Total questions: 10
Worksheet time: 5mins
What processes are important for the degradation of solvents produced by the chemical industry?
Biodegradability
Chemical reactions
Ultraviolet light
Oxygen and water vapour
What prevents the biodegradation of chemicals in polluted streams?
Heavy pollution
High temperatures
Low oxygen levels
Chemical reactions
How do particular species in a microbial community adapt to new conditions?
By mutation and natural selection
By genetic modification
By chemical reactions
By environmental changes
What is the environmental concern regarding synthetic organic chemicals?
They do not occur naturally
They are biodegradable
They are easily degradable
They are found in nature
What affects the degradability of alkane hydrocarbons?
Chain branching and length
Temperature
Chemical composition
Presence of oxygen
What is the effect of chlorine substitution in alkanes?
Easier degradation
Increased resistance
No effect
Increased toxicity
What is the general trend in the degradability of alkenes compared to alkanes?
Alkenes are less readily degraded
Alkenes are more readily degraded
They have the same degradability
Alkenes are not degradable
What happens to benzene under conditions of appreciable dilution?
It becomes toxic
It sustains bacterial growth
It degrades rapidly
It becomes insoluble
What effect does monoalkyl substitution have on benzene?
Increases degradability
Decreases degradability
No effect
Makes it toxic
What is the effect of chlorine polysubstitution in the benzene ring?
Increases degradability
Imparts resistance
No effect
Makes it more soluble
