MCQOPTIONS
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MCQOPTIONS
This section includes 272 Mcqs, each offering curated multiple-choice questions to sharpen your Environment Management knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Secondary treatment reduces bacterial load, ranges from |
| A. | 90-100% |
| B. | 80-98% |
| C. | 40-60% |
| D. | 10-30% |
| Answer» C. 40-60% | |
| 252. |
What does an inorganic compounds contain ? |
| A. | Sodium Chloride |
| B. | Nutrients |
| C. | Oil |
| D. | Fats |
| Answer» B. Nutrients | |
| 253. |
Which is chief source of nitrogenous matter urea ? |
| A. | Phosphorous |
| B. | Protein |
| C. | Calcium |
| D. | Nutrient |
| Answer» C. Calcium | |
| 254. |
In higher temperature, D.O concentration of water molecules is, comparatively |
| A. | High |
| B. | Low |
| C. | Medium |
| D. | Very High |
| Answer» C. Medium | |
| 255. |
Presence of hydrogen sulphide indicates anaerobic |
| A. | Decomposition |
| B. | Eutrophication |
| C. | Degradation |
| D. | Biodegradation |
| Answer» B. Eutrophication | |
| 256. |
What is important to support marine animals in water bodies? |
| A. | Dissolved Oxygen |
| B. | Nitrogen |
| C. | CO |
| D. | CO₂ |
| Answer» B. Nitrogen | |
| 257. |
Secondary treatment is also known as |
| A. | Biological Treatment |
| B. | Preliminary Treatment |
| C. | Secondary Treatment |
| D. | Tertiary Treatment |
| Answer» B. Preliminary Treatment | |
| 258. |
BOD, which is not oxidized biologically is known as |
| A. | Biologically Degradable |
| B. | Biologically Inactive |
| C. | Biologically Active |
| D. | Bioactive |
| Answer» C. Biologically Active | |
| 259. |
WHERE_WE_CAN_FIND_WATER_SOLUBLE_RADIOACTIVE_ISOTOPES??$ |
| A. | In radioactive reactor |
| B. | In radioactive coolant |
| C. | In radioactive shield |
| D. | In radioactive waste |
| Answer» E. | |
| 260. |
Why thermal pollution causing the release of hot water by power plants is dangerous?$ |
| A. | They increase the solubility of oxygen |
| B. | They decrease the solubility of oxygen |
| C. | They don’t dissolve oxygen |
| D. | They dissolve nitrogen |
| Answer» C. They don‚Äö√Ñ√∂‚àö√ë‚àö¬•t dissolve oxygen | |
| 261. |
What_is_the_main_reason_for_thermal_pollution?$ |
| A. | Increase in the temperature of the ecosystem |
| B. | Increase in the chemical contains in water |
| C. | Hot water released by power plants and industries |
| D. | Pollution causing by vehicles |
| Answer» D. Pollution causing by vehicles | |
| 262. |
Leakage of oil from underground tanks can pollute groundwater. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 263. |
The birds lay eggs with shells that are much thinner than normal is an example of_______________ |
| A. | Bioaccumulation |
| B. | Mutation |
| C. | DNA sequence |
| D. | Mal nutrients |
| Answer» B. Mutation | |
| 264. |
How to minimize the pollution of water pollution due organic chemicals that release to water bodies? |
| A. | To remove all the aquatic organisms from the water |
| B. | To purify water manually after released to the water bodies |
| C. | Purify the water before enter the water directly from industries |
| D. | Leave the water bodies without using it |
| Answer» D. Leave the water bodies without using it | |
| 265. |
What is a sediment of suspended matter? |
| A. | Insoluble particles of soil and other solids |
| B. | Soluble particles of soil and other solids |
| C. | Insoluble particles of water |
| D. | Soluble particles of water |
| Answer» B. Soluble particles of soil and other solids | |
| 266. |
Who sediment of suspended matter occurs? |
| A. | When soil is eroded from the air |
| B. | When soil is eroded from the land |
| C. | When soil is eroded from the water |
| D. | When soil is eroded from the rock |
| Answer» C. When soil is eroded from the water | |
| 267. |
There is only one class of common water pollutants. |
| A. | True |
| B. | False |
| Answer» C. | |
| 268. |
What are water soluble inorganic chemicals? |
| A. | Compounds of pure metals |
| B. | Compounds of non-metals |
| C. | Compounds of synthetic metals |
| D. | Compounds of toxic metals |
| Answer» E. | |
| 269. |
Why certain parts of water bodies contain more number of algae? |
| A. | Due to favorable environment |
| B. | Due to run-off excess fertilizers |
| C. | Due to lack of fertilizers |
| D. | Due to water pollution |
| Answer» C. Due to lack of fertilizers | |
| 270. |
What is the indicator of pollution in water? |
| A. | Amount of oxygen |
| B. | Amount of hydrogen |
| C. | Amount of BOD |
| D. | Amount of nitrogen |
| Answer» D. Amount of nitrogen | |
| 271. |
What is oxygen depleting waste? |
| A. | Organic waste that can be decomposed by aerobic bacteria |
| B. | Organic waste that can be decomposed by anaerobic bacteria |
| C. | Organic waste that can be decomposed by aerobic viruses |
| D. | Organic waste that can be decomposed by anaerobic viruses |
| Answer» B. Organic waste that can be decomposed by anaerobic bacteria | |
| 272. |
Which of the following organisms found in human waste that cause water pollution? |
| A. | Coliform bacteria |
| B. | Viruses |
| C. | Protozoa |
| D. | Parasitic worms |
| Answer» B. Viruses | |