This set of Hazardous Waste Management Multiple Choice Questions & Answers (MCQs) focuses on “E-waste – Sources and Management”.
1. What is the iron and steel constitute of e-waste?
a) 20
b) 30
c) 40
d) 50
View Answer
Explanation: E-waste consists of iron and steel constitute about 50%, followed by plastics (21%), non-ferrous metals (13%) and other constituents.
2. Which of the following element make e-waste hazardous in nature?
a) Lead
b) Glass
c) Plastic
d) Iron
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Explanation: The presence of elements like lead, mercury, arsenic, cadmium, selenium, hexavalent chromium, and flame retardants beyond threshold quantities make e-waste hazardous in nature.
3. In 2006, the IAER projected that _________ electronic and electrical appliances would become e-waste by 2010.
a) 1 billion
b) 2 billion
c) 3 billion
d) 4 billion
View Answer
Explanation: In 2006, the International Association of Electronics Recyclers (IAER) projected that 3 billion electronic and electrical appliances would become WEEE or e-waste by 2010.
4. According to the Comptroller and Auditor- General’s (CAG) report what is the amount of e-waste generated annually?
a) 4LT
b) 5LT
c) 6LT
d) 7LT
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Explanation: According to CAG report over 4 lakh tonnes of electronic waste, 1.5 MT of plastic waste, 1.7 MT of medical waste, 48 MT of municipal waste are generated in the country annually.
5. What is the hazardous pollutant released from LED’s?
a) Arsenic
b) Barium
c) Cobalt
d) Cadmium
View Answer
Explanation: Semiconductors, diodes, microwaves, LED’s (Light-emitting diodes), solar cells releases arsenic into the environment.
6. What is the hazardous pollutant released from electron tubes?
a) Arsenic
b) Barium
c) Cobalt
d) Cadmium
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Explanation: Electron tubes, filler for plastic and rubber, lubricant additives releases barium into the environment.
7. What is the hazardous pollutant released from batteries?
a) Arsenic
b) Barium
c) Cobalt
d) Cadmium
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Explanation: Batteries, pigments, solder, alloys, circuit boards, computer batteries, monitor cathode ray tubes (CRT) releases cadmium when handled improperly.
8. Insulators release chrome.
a) True
b) False
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Explanation: Chrome is released by dyes or pigments, switches, solar panels whereas, insulators release cobalt.
9. What is the hazardous pollutant released from inductive coils?
a) Arsenic
b) Barium
c) Cobalt
d) Copper
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Explanation: Conductor in cables, copper ribbons, coils, circuitry, and pigments releases copper pollutant into environment.
10. What is the hazardous pollutant released from circuit boards?
a) Arsenic
b) Barium
c) Lead
d) Copper
View Answer
Explanation: Lead rechargeable batteries, solar, transistors, lithium batteries, PVC, (polyvinyl chloride) stabilizers, lasers, LED’s, thermoelectric elements, and circuit boards releases lead pollutant into environment.
11. What is the hazardous pollutant released from telephones?
a) Lithium
b) Barium
c) Lead
d) Copper
View Answer
Explanation: Mobile telephones, photographic equipment, video equipment (batteries) releases lithium pollutant into environment.
12. What is the hazardous pollutant released from calculators?
a) Lithium
b) Mercury
c) Lead
d) Copper
View Answer
Explanation: Components in copper machines and steam irons; batteries in clocks and pocket calculators, switches, LCDs release mercury into environment when improperly handled.
13. Nickel is released from _______
a) Display
b) Calculator
c) Alloy
d) Transformers
View Answer
Explanation: Nickel is released into environment from alloys, batteries, relays, semiconductors, and pigments.
14. Which of the hazardous pollutant occurs in plastic?
a) Lithium
b) PCBs
c) Lead
d) Copper
View Answer
Explanation: Transformers, capacitors, softening agents for paint, glue, and plastic contains PCBs (polychlorinated biphenyls).
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