The correct statement among the following is

Important Questions on Environmental Chemistry

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 51

The ozone layer of the stratosphere requires protection from indiscriminate use of:

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 52

Ozone is an important constituent of the stratosphere because:

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 53

Which among the following statements is false?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 54

Presence of which fuel gas in exhaust fumes shows incomplete combustion of fuel?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 55

The formation of ozone in the upper atmosphere from oxygen takes place by the action of:

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 56

The chemical entities present in thermosphere of the atmosphere are:

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 57

Which of the following statements is not true about classical smog?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 11 - Environmental Chemistry>Level 1>Q 58

Biochemical Oxygen Demand ($\mathrm{BOD}$) is a measure of organic material present in water. $\mathrm{BOD}$ value less than $5 \mathrm{ppm}$ indicates the water sample to be: