Eutrophication of water body results from

Statements about Eutrophication : (a) The eutrophication occurs in the lotic water body primarily in the hilly regions. (b) The eutrophication occurs in lentic water and there is a gradual accumulation of organism and their products. (c) Eutrophication promotes fish growth as algal blooms serve as a source of food for fishes. (d) The eutrophicated water is oxygen-rich and safe for human consumption without treatment. Which is /are the correct statement(s) ?

A

only (a)

B

only (d)

C

(b) and (c)

D

(a) and (d)

Consider the following facts related to eutrophication 1. Oxygen demand in water increases in the process of eutrophication. 2. The quantity of oxygen dissolved in water increases in the process of eutrophication. Which of the above statements is/are correct?

A

Only 1

B

Only 2

C

Both 1 and 2

D

Neither 1 nor 2

Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Quantity A∶ A 30 litre mixture of wine and water has wine and water in the ratio 5∶ 7. How much water must be drawn off so that the ratio of wine and water becomes 25∶ 19? Quantity B∶ A 35 litre mixture of wine and water has wine and water in the ratio 1∶ 3. How much water must be drawn off so that the ratio of wine and water becomes 1.75∶ 3.35? Quantity C∶ A 27 litre mixture of wine and water has wine and water in the ratio 3∶ 2. How much water must be drawn off so that the ratio of wine and water becomes 81∶ 11?

A

A = B = C

B

A > B > C

C

B > C > A

D

A > C > B

E

A < B > C

Eutrophication in a water body leads to which of the following? A. Bloom of algae B. Increase in the level of dissolved oxygen (DO) C. Increase in turbidity and odor of the water body D. Difficulty in sustaining normal aquatic life E. Deficiency of nutrients Choose the correct answer from the options given below:

A

A, B and C only

B

B, C and D only

C

A, C and D only

D

C, D and E only

In which of the following case we can surely say that the body A is charged: a) When a positively charged body is kept near to body A and it gets attracted b) When a negatively charged body is kept near to body A and it gets attracted c) When a positively charged body is kept near to body A and it gets repelled

A

Only in case a the body A is surely charged

B

Only in case b the body A is surely charged

C

Only in case c the body A is surely charged

D

In all the cases a, b and c the body A is surely charged

Eutrophication of water body results from-

A

Submersing idols in the water body

B

Depletion of Oxygen

C

Enhanced growth of algal blooms

D

High amounts of notrogenous nutrients and orthophosphates

Bottled water is drinking water (e.g., well water, distilled water, mineral water, or spring water) packaged in PET Bottle or Glass Water Bottles. Bottled water is comprehensively regulated by the U.S. Food and Drug Administration (FDA) as a packaged food product. By law, the FDA regulations for bottled water must be at least as stringent as the Environmental Protection Agency standards for tap water. What inference can be drawn from the above passage?

A

Bottled water is more expensive than tap water.

B

Bottled water is more nutritious than tap water.

C

Tap water is monitored by the FDA.

D

Bottled water can pose an environmental risk.

With reference to Eutrophication, which of the following statements is/are correct? 1.It is a phenomenon of nutrient enrichment of a water body. 2. It depletes dissolved oxygen from the water. Select the correct answer using the codes given below :

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

With reference to Eutrophication, which of the following statement(s) is/are correct? 1. It decreases dissolved oxygen of water. 2. It is a phenomenon of nutrient enrichment of a water body. Select the correct answer from the codes given below:

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

With reference to Eutrophication, which of the following statements is/are correct?
1. It is a phenomenon of nutrient enrichment of a water body.
2. It depletes dissolved oxygen of the water.
Select the correct answer:

A

Only 1

B

Only 2

C

Both 1 and 2

D

Neither 1 nor 2

Eutrophication of water body results from

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