Water Chemistry-Concept of DO, BOD, COD (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 1 - 3 of 3

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Question number: 1

» Water Chemistry » Concept of DO, BOD, COD

Appeared in Year: 2015

MCQ▾

Question

BOD of the effluents discharged on land for irrigation should not exceed: (June)

Choices

Choice (4) Response

a.

100 mg/L

b.

60 mg/I.

c.

30 mg/L

d.

300 mg/I.

Question number: 2

» Water Chemistry » Concept of DO, BOD, COD

Appeared in Year: 2015

MCQ▾

Question

BOD of the effluents discharged on land for irrigation should not exceed: - (June)

Choices

Choice (4) Response

a.

60mgL

b.

300mgL

c.

100mgL

d.

30mgL

Question number: 3

» Water Chemistry » Concept of DO, BOD, COD

Appeared in Year: 2009

MCQ▾

Question

A measure of the amount of oxygen consumed in the biological process that breaks down organic matter is known as: (June)

Choices

Choice (4) Response

a.

Bio concentration

b.

Bioaccumulation

c.

Biomagnification

d.

Biochemical oxygen demand

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