Environmental Issues NEET MCQ for Biology with Answers

Environmental Issues NEET MCQ Introduction

Environmental Issues NEET MCQ: Ecosystems' regular functioning is disrupted by environmental issues. Furthermore, these problems may be the result of natural processes or human activity (human effect on the environment). When an ecosystem can no longer heal under the current conditions, these problems are deemed critical, and catastrophic when an ecological collapse is predicted.

NEET Biology MCQ

Environmental Issues NEET MCQ

Q 1. Which of the following best describes environmental chemistry?

1. Study of chemical interactions that take place in water, air, land, biological ecosystems, and human activities
2. Study of only chemical processes that take place in biological, terrestrial, aquatic, and atmospheric environments.
3. Study of only chemical interactions that take place in water, air, and land.
4. None of the above

Answer- Option (1) is correct.

Explanation: Environmental chemistry is the study of chemical processes that take place in water, air, land, and biological environments as well as the effects of human activity on them. The subjects addressed include astrochemistry, atmospheric chemistry, environmental modeling, geochemistry, marine chemistry, and pollution removal.

Q 2. What is the dominating range of light wavelengths in the lower atmosphere?

1. Less than 100 nm,
2. Greater than 300 nm,
3. Between 100 and 300 nm,
4. All wavelengths are equally present.

Answer- Option (2) is correct.

Explanation: Ozone does not often develop at ground level because of the presence of light with wavelengths larger than 300 nm in the lowest layers of the atmosphere. The light with wavelength less than 300nm falls in the ultraviolet category and is often filtered by the ozone layer which is present in the stratosphere.

Q 3. Which of the following pollutant categories best describes cultural eutrophication?

1. Noise pollution,
2. Thermal pollution,
3. Soil pollution,
4. Water pollution.

Answer- Option (4) is correct.

Explanation: Cultural eutrophication is a form of water pollution caused by an abundance of nutrients from household trash, factories, etc. that contaminate lakes, lower oxygen levels, and harm aquatic ecosystems. The process that accelerates natural eutrophication as a result of human activities is known as cultural or anthropogenic eutrophication. As a result of land clearance and urban development, lakes and rivers receive additional nutrients like phosphates and nitrate, which are subsequently provided to coastal estuaries and bays.

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Q 4. Which of the following best describes the field of environmental science?

1. Study of just human-environment interactions
2. Study of only environment-physical component interactions
3. Research on how chemical elements interact with the environment
4. Research on how the environment's physical, chemical, and biological elements interact

Answer- Option (4) is correct.

Explanation: Environmental science is the study of how the environment's physical, chemical, and biological elements interact. In order to comprehend human interactions, perspectives, and environmental policy, environmental studies increasingly combine social sciences. Design and technologies for enhancing environmental quality in all areas are the focus of environmental engineering. Environmental scientists work to comprehend the earth's physical, chemical, biological, and geological processes and then use that understanding to comprehend how issues like alternative energy sources, pollution control and mitigation, resource management, and the effects of global warming and climate change affect and influence the natural systems and processes of the earth.

Q 5. What one of the following is true about water vapor?

Answer- Option (2) is correct.

Explanation: Aqueous vapor or water vapor are both terms for the gaseous state of water. It is a specific kind of water condition found in the hydrosphere. In addition to the sublimation of ice, the boiling or evaporation of liquid water can also produce water vapor. Water vapor is translucent, like most other components of the atmosphere.

Q 6. What is the procedure for clearing a region of its forest cover known?

1. Forestry conversion;
2. Deforestation;
3. Pollution;
4. The greenhouse impact.

Answer- Option (2) is correct.

Explanation: Deforestation is the process of removing a forest cover from a region and converting a forest area to a non-forested one. Due to this, the number of tropical forests has decreased by around 40% compared to just 1% in the temperate zone. This removal of forest cover is very harmful to the environment because it causes soil erosion, changes weather patterns, and damages the air and water balance and ecological growth.

Q 7. Which of the following processes is used by farmers to clear forests of trees and burn plant debris?

1. Room culture,
2. Jhum cultivation,
3. Crop cultivation,
4. Reforestation.

Answer- Option (2) is correct.

Explanation: Jhum cultivation is the method of cultivating crops by removing trees and other plant life from the forest and burning the leftovers for agriculture. It is sometimes referred to as "slash-and-burn agriculture" and is mostly used in India's northeastern states.

Q 8. Which honor is bestowed on rural dwellers or groups that have made noteworthy contributions and demonstrated a commitment to safeguarding wildlife across the nation?

1. The Arjuna Award,
2. The Padma Bhushan Award,
3. The Rajiv Gandhi Wildlife Conservation Award,
4. The Amrita Devi Bishnoi Wildlife Protection Award.

Answer- Option (4) is correct.

Explanation: It is given to people or communities from rural regions who have displayed great bravery, made a substantial contribution, and dedicated themselves to the conservation of wildlife nationwide. A financial award of Rs. 1 lakh is further awarded to that person or community.

Q 9. What is the full form of DDT?

1. Dichlorodiphenyltrichloroethane,
2. Diphenyldichlorotrichloroethane,
3. Dichlorodiphenyltriphenylethane,
4. Dichlorodiphenyltrichloroethane.

Answer- Option (2) is correct.

Explanation: DDT is officially known as dichlorodiphenyltrichloroethane. It is a crystalline chemical substance that is tasteless, practically odorless, and colorless. It was first created as an insecticide, but its usage was later discontinued due to its negative effects on the environment and living things. High quantities of it can make people throw up, have seizures, or tremble.

Q 10. Which of the following doesn't makeup DDT?

1. Carbon,
2. Fluorine,
3. Chlorine,
4. Hydrogen.

Answer- Option(b) is correct. Fluorine is not a component of DDT. Dichlorodiphenyltrichloroethane, often known as DDT, has the chemical formulaC14H9Cl5. Therefore, as is clear from its chemical composition, DDT doesn't include fluorine. About 15% of its makeup is made up of contaminants, which are present in modest amounts. Its para isomer, which makes up 77% of the material, is the main ingredient.

Q 11. Which of the following is a degradable pollutant?

1. Chemicals,
2. Metals,
3. Vegetable Wastes,
4. Plastic.

Answer- Option (3) is correct.

Explanation: Vegetable waste is a biodegradable contaminant. They can be quickly degraded by microorganisms through natural processes since they are organic. Since they are inorganic and will slowly disintegrate over time, chemicals, metals, and polymers will stay in the environment for many years without changing.

Q 12. Which of the following has not become a global concern since the development of environmental biotechnology?

1. Marine pollution
2. Oil spills
3. Topsoil erosion
4. Global warming

Answer- Option (3) is correct.

Explanation: While topsoil erosion is categorized as a national issue because the national government would be involved in resolving it, global warming, marine pollution, oil spills, air pollution, and the energy crisis have emerged as international issues that are receiving attention due to the advent of environmental biotechnology.

Q 13. Which of the following does not contribute to the decline or extinction of species?

1. Land conversion,
2. Unsustainable resource extraction,
3. The introduction of foreign species,
4. Reforestation.

Answer- Option (4) is correct.

Explanation: The extinction or decline of species is primarily brought on by a variety of ecosystem-unfriendly activities like land conversion, unsustainable resource extraction, and the introduction of exotic species, which changes the world's biodiversity. In contrast, reforestation results in the planting of plants, which helps to restore biodiversity.

Q 14. The main factor contributing to environmental degradation is ____.

1. Bio-magnification,
2. Nitrogen deposition,
3. Quorum quenching,
4. Lyophilization.

Answer- Option (2) is correct.

Explanation: The main contributor to environmental deterioration is nitrogen deposition because it causes species extinctions and changes in plant communities in the soil and water. Contrarily, quorum quenching inhibits quorum sensing, lyophilization is the process of freeze drying, and bio-magnification causes harmful compounds to be deposited in the food chain.

Q 15. Which of the following techniques for getting rid of solid waste releases organic contaminants into the environment?

1. Landfilling;
2. Incineration;
3. Phytoremediation;
4. Biological treatment.

Answer- Option (2) is correct.

Explanation: While landfilling doesn't directly release toxins into its immediate environment, phytoremediation is a method of bioremediation using plants. Biological treatment also includes microbes. Incinerating solid waste in an incinerator results in the release of dioxins into the environment, which again contributes to environmental pollution.