Class 12 Biology Environmental Issues Pollution

Medium

In a polluted lake:

A
$BOD$ and $DO$ are high
B
$BOD$ is high and $DO$ is low
C
Both are low
D
$BOD$ is low and $DO$ is high

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Biology Questions

Chapter

Environmental Issues

Subtopic

Pollution

Similar Questions

Thermal pollution of water bodies is due to

Easy

It is a common practice to undertake desilting of the overhead water tanks. What is the possible source of silt that gets deposited in the water tanks?

Medium

The dental disease characterized by mottling of teeth due to the presence of a specific chemical in drinking water is caused by which of the following elements?

Give scientific reasons: Noise is also considered a part of air pollution.

Medium

The effect of pollution is first marked on:

Medium

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.