Download App

Environmental Issues — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues1 Mark
MCQ
What is $\text{BOD}?$
  • A
    The amount of $O_2$ utilized by organisms in water.
  • ✓
    The amount of $O_2$ utilized by microorganisms for decomposition.
  • C
    The total amount of $O_2$ present in water.
  • D
    All of the above.
✓

Answer

Correct option: B.
The amount of $O_2$ utilized by microorganisms for decomposition.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Environmental Issues→Environmental Issues — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which one of the following is not used for construction of ecological pyramids?
→
Which of the following $STDs$ cannot be treated with antibiotics?

$A.$ Gonorrhoea   $B.$ Syphilis   $C.$ Chlamydia   $D.$ Genital herpes

→
A population of a species invades a new area. Which of the following condition will lead to Adaptive Radiation ?
→
Which one of the following statements is incorrect about menstruation?
→
Ovulation in the human female normally takes place during the menstrual cycle.
→
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as
→
$X$ - Chemical carcinogens are responsible for lung cancer

$Y$ - Strong magnetic field is used in $CT-SCAN$ to diagnose cancer

→
The prerequisites for biotechnological production of antibiotics is
→
Acclimatization is
→
World wild life week is:
→