Exams › NEET › Chemistry

Which one of the following statement is not true?

1. pH of drinking water should be between 5.5–9.5.
2. Concentration of DO below 6 ppm is good for the growth of fish.
3. Clean water would have a BOD value of less than 5 ppm.
4. Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant.

Correct answer: Concentration of DO below 6 ppm is good for the growth of fish.

Solution

The statement 'Concentration of DO below 6 ppm is good for the growth of fish' is incorrect because dissolved oxygen (DO) levels below 6 ppm are generally harmful to aquatic life, including fish.

Related NEET Chemistry questions

• Which of these are particulates?
• Untreated domestic sewage has a low:
• Which is among the greatest contributors to gaseous pollutions that are responsible for acidic rain?
• Chlorofluorocarbons (CFCs) are widely used in air conditioners, refrigerators etc, because of being:
• Which of the following is a nonbiodegradable pollutant?
• Sulphur dioxide levels in the atmosphere can be reduced by using:

⚔️ Practice NEET Chemistry free + battle 1v1 →