BOD stands for:

Important Questions on Environmental Chemistry

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 8th January 2020 Shift 1>Q 17

Among the gases $\left(\mathrm{a}\right)-\left(\mathrm{e}\right),$ the gases that cause greenhouse effect are:
$\left(\mathrm{a}\right){\mathrm{C}\mathrm{O}}_2$
$\left(\mathrm{b}\right){\mathrm{H}}_2\mathrm{O}$
$\left(\mathrm{c}\right)\mathrm{}\mathrm{C}\mathrm{F}\mathrm{C}\mathrm{s}$
$\left(\mathrm{d}\right){\mathrm{O}}_2$
$\left(\mathrm{e}\right){\mathrm{O}}_3$

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 8th April 2019 Shift 2>Q 18

The maximum prescribed concentration of copper in drinking water is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 8th April 2019 Shift 1>Q 19

Which is wrong with respect to our responsibility as a human being to protect our environment?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 8th April 2019 Shift 1>Q 20

Assertion: Ozone is destroyed by $\mathrm{C}\mathrm{F}\mathrm{C}\mathrm{s}$ in the upper stratosphere.
Reason: Ozone holes increase the amount of $\mathrm{U}\mathrm{V}$ radiation reaching the earth.

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 8th April 2018>Q 21

The recommended concentration of fluoride ion in drinking water is up to 1 ppm as fluoride ion is required to make teeth enamel harder by converting $\left[3{\mathrm{Ca}}_3{\left({\mathrm{PO}}_4\right)}_2.\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\right]$ to:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 8th April 2017>Q 22

Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal.

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 6 September 2020 Shift 1>Q 23

The presence of soluble fluoride ion upto 1 ppm concentration in drinking water, is :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 5 September 2020 Shift 1>Q 24

The condition that indicates a polluted environment is: