In a water body polluted with biodegradable organic compounds,
1. the BOD and DO content are low
2. the BOD and DO content are high
3. the BOD is low and DO content is high
4. the BOD is high and DO content is low
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn an algal bloom, the cause of death of other algae is usually:
1. toxins
2. decreased DO
3. decreased sunlight
4. decreased nutrients
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe world’s most problematic aquatic weed, “The terror of Bengal”, is the name given to:
1. | Zostera | 2. | Ceratophyllum |
3. | Eichhornia | 4. | Parthenium |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyApart from DDT, what else is known to undergo biological magnification in aquatic food chain?
1. | Nitrates | 2. | Phosphates |
3. | Mercury | 4. | Calcium |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn increase in concentration of the intoxicant at successive trophic levels is known as:
1. | Eutrophication | 2. | Biomagnification |
3. | Bioremediation | 4. | Biofortification |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHigh concentrations of accumulated DDT in birds:
1. kills pathogens in their blood
2. causes sterility by affecting gametogenesis
3. leads to premature breaking of eggs
4. causes spasticity of the muscles of the body
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHot wastewater discharged from industries into water bodies:
1. | increases the nutrient content of the water body |
2. | decreases the BOD of water |
3. | is considered a water pollutant |
4. | is desirable as cool water is more damaging to aquatic life |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEcological sanitation, also known as 'Ecosan', is a new paradigm in sanitation that:
1. | eliminates the use of conventional pesticides to decrease environmental insult |
2. | recognises human excreta and household wastewater as resources that can and are recovered, treated, and reused |
3. | emphasises the disposal of solid waste in sanitary landfill sites |
4. | emphasises the need for strict legislation against polluting industries. |
Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology