Environmental Chemistry - Online Test
Q1. The gas released during volcanic eruptions is :
Answer : Option C
Explaination / Solution:
CO2 is the second most abundant gas released in volcanic eruption after water vapours.
Q2. This process in which nutrient enriched water bodies support a dense plant population, which kills animal life by depriving it of oxygen and results in subsequent loss of biodiversity, is called as :
Answer : Option A
Explaination / Solution:
Eutrophication is the process in which nutrient enriched water bodies support a dense plant population, which kills animal life by consuming oxygen and depriving them of it.
Q3. Measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically is termed as :
Answer : Option C
Explaination / Solution:
Measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically is termed as Biochemical Oxygen Demand (BOD)
Q4. Recycling of materials and energy will lead to :
Answer : Option C
Explaination / Solution:
Recycling of materials and energy will lead to decrease in environmental pollution as amount of waste material will be lesser and so lesser pollution will be caused.
Q5. Reducing potentially hazardous waste through smarter productions is called :
Answer : Option D
Explaination / Solution:
Metathesis is the method developed by noble prize winning trio, Chauvin, Grubbs and Schrock. It is a method in organic synthesis in which a certain group of atoms are rearranged in a molecule so that a molecule with lesser harmful effect is produced.
Q6. Metathesis is developed by :
Answer : Option C
Explaination / Solution:
Yves Chauvin, Robert H. Grubbs and Richard R Schrock won the noble prize in 2005 for designing the method of metathesis.
Q7. Three elements needed for the healthy growth of plants are
Answer : Option D
Explaination / Solution:
Nitrogen , phosphorus, and potassium are needed.
Q8. The Earth does not directly provide which of man’s basic needs :
Answer : Option A
Explaination / Solution:
The Earth does not directly provide Shelter which is man's basic need. we have to use different resources on earth available in different forms to convert them into objects that can be used as a shelter
Q9. Which of these is not released from burning fossil fuels?
Answer : Option C
Explaination / Solution:
Copper oxide can never be released during burning of fossil fuels because they do not contain copper in it which would be released as copper oxide after combustion.
Q10. Dissolved pollutant gases can form :
Answer : Option C
Explaination / Solution:
Pollutant gases dissolve in water in atmosphere to form Acid rain.
2SO2 + 2H2O + O2 -------> 2H2SO4
