MEDIUM
JEE Main
IMPORTANT
Earn 100

Biochemical Oxygen Demand BOD is the amount of oxygen required (in ppm ):

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Important Questions on Environmental Chemistry

EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th January 2019 Shift 2>Q 9
The pH of rain water is approximately:
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th January 2019 Shift 2>Q 10
Which of the following conditions in drinking water causes methemoglobinemia?
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th January 2019 Shift 1>Q 11
A water sample has ppm level concentration of the following metals:

Fe=0.2; Mn=5.0; Cu=3.0; Zn=5.0 .

The metal that makes the water sample unsuitable for drinking is
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th April 2019 Shift 2>Q 12
The layer of atmosphere between 10 km to 50 km above the sea level is called as:
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th April 2019 Shift 1>Q 13
Excessive release of CO2 into the atmosphere results in
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th April 2019 Shift 1>Q 14
The correct order of the oxidation states of nitrogen in NO, N2O, NO2 and N2O3 is
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th April 2017>Q 15
Which of the following is a set of greenhouse gases?
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 16 - Environmental Chemistry>JEE Main - 9th April 2016>Q 16
BOD stands for: