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Hazardous Waste Management Mcqs

Q:

When did Texas City disaster occur?

A) 1946 B) 1947
C) 1948 D) 1949
 
Answer & Explanation Answer: B) 1947

Explanation: Texas City disaster was an industrial accident, occurred on April 26, 1947, in port of Texas.

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Q:

PCBs are classified by the U.S. EPA as _______ carcinogens.

A) A1 B) A2
C) B1 D) B2
 
Answer & Explanation Answer: D) B2

Explanation: PCBs are classified by the U.S. EPA as B2 probable human carcinogens, based on liver tumors in adult rats.

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Q:

Chronic PCBs exposure has been associated with _______

A) Dizziness B) Low birth rate
C) Acneiform eruption D) Chloracne
 
Answer & Explanation Answer: B) Low birth rate

Explanation: In adult males chronic PCB exposure has been associated with decreased sperm integrity or sperm counts and in feamles increased cord blood PCB concentrations were significantly associated with lower birth weight.

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Q:

Acute high dose exposure to PCBs resulted in ________

A) Dizziness B) Ataxia
C) Acneiform eruption D) Chloracne
 
Answer & Explanation Answer: D) Chloracne

Explanation: Acute high dose exposure to PCBs resulted in chloracne (distinctive skin lesions) in children and adults, which can be severe and disfiguring lesions and persist from 1 year to permanently.

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Q:

What is the PCB route of exposure for children?

A) Breast milk B) Air
C) Water D) Soil
 
Answer & Explanation Answer: A) Breast milk

Explanation: Route of PCB exposure for children is ingestion of foods containing PCBs, including fish and other foods, and human breast milk.

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Q:

Pyrolysis of PCBs and chlorinated benzene at high temperatures produced PCDFs.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: Pyrolysis of PCBs and chlorinated benzene at high temperatures produced polychlorinated dibenzofurans (PDFs) and polychlorinated dibenzo-p-dioxins (PCDDs).

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Q:

Which among the following is the Yusho symptoms?

A) Dizziness B) Ataxia
C) Acneiform eruption D) Choking
 
Answer & Explanation Answer: C) Acneiform eruption

Explanation: Yusho symptoms includes acneiform eruption, dermal pigmentation, and increased eye discharge.

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48
Q:

What is the TDI of TDQ established in 1996?

A) 5 pg/kg/day B) 10 pg/kg/day
C) 15 pg/kg/day D) 20 pg/kg/day
 
Answer & Explanation Answer: B) 10 pg/kg/day

Explanation: Tolerable daily intake (TDI) of TEQ, 10 pg/kg/day, was established in 1996 by Ministry of Health and Welfare.

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