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Environmental Issues Test - 43

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Environmental Issues Test - 43
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Weekly Quiz Competition
  • Question 1
    1 / -0
    How are electronic items dangerous?
  • Question 2
    1 / -0
    The time taken for solid waste is very _____
    Solution
    The time taken for some solid waste to decompose is very long, 100-400 years for old cloths, wool etc. 
  • Question 3
    1 / -0
     The polluting strength of sewage is usually characterized by its
    Solution
    Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed (i. e., demanded) by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.
    Nitrogen content and ozone content cannot help us measure the sewage pollution.
    Eutrophication is the enrichment of an ecosystem with chemical nutrients, typically compounds containing nitrogen, phosphorus, or both. 
  • Question 4
    1 / -0
    Electronic devices which are reused or discarded are called 
    Solution
    Electronic waste or e-waste describes discarded electrical or electronic devices. Used electronics which are destined for reuse, resale, salvage, recycling or disposal are also considered e-waste. Informal processing of electronic waste in developing countries may cause serious health and pollution problems, as these countries have limited regulatory oversight of e-waste processing. 
  • Question 5
    1 / -0
    Mark the correct statement about biomedical wastes.
  • Question 6
    1 / -0
    Incomplete burning of petrol or diesel in vehicles creates .......... gas which is very poisonous. 
    Solution
    Incomplete burning of petrol or diesel in vehicles creates carbon monoxide. Carbon monoxide, when inhaled, reduces the oxygen carrying capacity of the blood. Thus, is dangerous for life.
  • Question 7
    1 / -0
    _______ waste includes waste from labs, medical origin etc.
    Solution
    Biomedical waste is waste that is either putrescible or potentially infectious. Biomedical waste may also include waste associated with the generation of biomedical waste that visually appears to be of medical or laboratory origin (e.g., packaging, unused bandages, infusion kits, etc.), as well research laboratory waste containing biomolecules or organisms that are restricted from environmental release. 
  • Question 8
    1 / -0
    Major pollutant of air is:
    Solution
    SO2, NO2SO_2, \ NO_2 & CFC CFC , all cause air pollution.
  • Question 9
    1 / -0
    Which toxic compound is not found in e-waste?
    Solution

    Substances found in large quantities include epoxy resins, fiberglass, PCBs, PVC (poly vinyl chlorides), thermosetting plastics, lead, tin, copper, silicon, beryllium, carbon, iron and aluminium. Elements found in small amounts include cadmium, mercury and thallium. Elements found in trace amounts include americium, antimony, arsenic, barium, bismuth, boron, cobalt, europium, gallium, germanium, gold, indium, lithium, manganese, nickel, niobium, palladium, platinum, rhodium, ruthenium, selenium, silver, tantalum, terbium, thorium, titanium, vanadium, and yttrium. Almost all electronics contain lead and tin (as solder) and copper (as wire and printed circuit board tracks), through the use of lead-free solder is now spreading rapidly. 

  • Question 10
    1 / -0
    What is the average life span of a computer?
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