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Hazardous Waste Management Mcqs

Q:

What is the hazardous pollutant released from LED’s?

A) Arsenic B) Barium
C) Cobalt D) Cadmium
 
Answer & Explanation Answer: A) Arsenic

Explanation: Semiconductors, diodes, microwaves, LED’s (Light-emitting diodes), solar cells releases arsenic into the environment.

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486
Q:

Which of the following element make e-waste hazardous in nature?

A) Lead B) Glass
C) Plastic D) Iron
 
Answer & Explanation Answer: A) Lead

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.

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399
Q:

Which of the hazardous pollutant occurs in plastic?

A) Lithium B) PCBs
C) Lead D) Copper
 
Answer & Explanation Answer: B) PCBs

Explanation: Transformers, capacitors, softening agents for paint, glue, and plastic contains PCBs (polychlorinated biphenyls).

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334
Q:

Nickel is released from _______

A) Display B) Calculator
C) Alloy D) Transformers
 
Answer & Explanation Answer: C) Alloy

Explanation: Nickel is released into environment from alloys, batteries, relays, semiconductors, and pigments.

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269
Q:

What is the hazardous pollutant released from circuit boards?

A) Arsenic B) Barium
C) Lead D) Copper
 
Answer & Explanation Answer: C) Lead

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.

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237
Q:

Why does site history have to be considered for hazard identification?

A) To estimate the risk B) To calculate carcinogenic exposure
C) To know the probable source and causes of contamination on site D) For determination of remedial actions
 
Answer & Explanation Answer: C) To know the probable source and causes of contamination on site

Explanation: Site history provides precise information about the activities that had been carried on the area. Most of the instance contamination is due to past activities on site.

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236
Q:

What is the hazardous pollutant released from inductive coils?

A) Arsenic B) Barium
C) Cobalt D) Copper
 
Answer & Explanation Answer: D) Copper

Explanation: Conductor in cables, copper ribbons, coils, circuitry, and pigments releases copper pollutant into environment.

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227
Q:

What is the hazardous pollutant released from telephones?

A) Lithium B) Barium
C) Lead D) Copper
 
Answer & Explanation Answer: A) Lithium

Explanation: Mobile telephones, photographic equipment, video equipment (batteries) releases lithium pollutant into environment.

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