- 1(current)
Q. No.Indicator of water pollution:
1. E. Coli
2. Chlorella
3. Beggiatoa
4. Ulothrix
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySewage purification is performed by:
1. Microbes
2. Fertilisers
3. Antibiotics
4. Antiseptics
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConcentration of DDT is highest in:
1. Primary consumer
2. Producers
3. Top consumer
4. Decomposers
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLarge-scale death of fish occurs in:
1. Saline lake
2. Oligotrophic lake
3. Eutrophic lake
4. Shallow lake
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe main reason for water bloom in rivers, lakes, sea, etc. is:
1. Brown algae and green algae
2. Cyanobacteria and dinoflagellates
3. Eicchornia
4. Fishes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMaximum DDT is present in birds feeding on:
1. Fishes
2. Meat
3. Insects
4. Seeds
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe shell of an egg in a bird becomes thin (not properly formed) due to the pollution of pesticides. This is due to interference in the activity of:
1. Ca ATPase
2. Mg ATPase
3. Calmodulin
4. None
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is absent in polluted water:
1. Hydrilla
2. Water hyacinth
3. Larva of stone fly
4. Blue-green algae
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFluoride pollution mainly affects:
1. Brain
2. Heart
3. Teeth
4. Kidney
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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