Environmental Issue And Environmental Pollution Ques 22

Question: What is B.O.D.?

Options:

A) The amount of $ O _2 $ utilized by organisms in water

B) The amount of $ O _2 $ utilized by micro-organisms for decomposition

C) The total amount of $ O _2 $ present in water

D) All of the above.

Show Answer

Answer:

Correct Answer: B

Solution:

  • Strength of sewage or degree of water pollution is measured in terms of BOD (Biochemical Oxygen Demand) value. BOD may be defined as, ’number of milligrams of $ O _2 $ required for decomposition of one litre of waste or water by decomposing microorganisms (bacteria)'.
ICAR Preparation

ICAR AIEEA (UG) Exam

ICAR Course

Recorded Course

Master Course for Agriculture

Master Course for Biology

Master Course for Chemistry

Master Course for Mathematics

Master Course for Physics

NCERT Books

Class 11

Class 12

Important Resources

ICAR AIEEA(UG) Syllabus

Blog

Forms

SATHEE Forum

icon  BETA

© 2014-2025 Copyright SATHEE

Privacy Policy

Powered by Prutor@IITK

goolge

Play Store
goolge

App Store

The Ministry of Education has launched the SATHEE initiative in association with IIT Kanpur to provide free guidance for competitive exams. SATHEE offers a range of resources, including reference video lectures, mock tests, and other resources to support your preparation. Please note that participation in the SATHEE program does not guarantee clearing any exam or admission to any institute.