Choose the wrong statements :

Important Questions on Environmental Chemistry

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-2>Q 21

The depletion of ozone layer is caused by :

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-2>Q 22

Which of the following is/are proper method(s) to dispose sludge?

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-2>Q 24

Which of the following is/are greenhouse gases ?

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-2>Q 26

Which of the following is a biodegradable pesticide?

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-2>Q 27

Which of the following compounds belongs to herbicides?

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-2>Q 31

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-3>Q 1

The concentration of fluoride, lead, nitrate and iron in water sample from an underground lake was found to be $1000 \mathrm{ppb}, 40 \mathrm{ppb}, 100 \mathrm{ppm}$and $0.2 \mathrm{ppm}$ respectively. This water is unsuitable for drinking due to high concentration of:

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Alpha Question Bank for Engineering: Chemistry>Chapter 17 - Environmental Chemistry>Exercise-3>Q 2

The smog is essentially caused by the presence of: