Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

Which award is given to the individuals or communities from rural areas that have shown a significant contribution and dedication in the protection of wildlife in the Country?(a) Arjuna Award(b) Padma Bhushan Award(c) Rajiv Gandhi Wildlife Conservation Award(d) Amrita Devi Bishnoi Wildlife Protection AwardI had been asked this question by my school teacher while I was bunking the class.My enquiry is from Environmental Issues topic in portion Environmental Issues of Biology – Class 12

Answer»

Correct answer is (d) Amrita DEVI BISHNOI Wildlife Protection Award

To elaborate: The individuals or communities from rural areas that have shown extraordinary courage, a significant contribution, and dedication in the protection of wildlife in the Country are awarded by the Amrita Devi Bishnoi Wildlife Protection Award. Along with this a cash award of RUPEES, ONE lakh is also given to that individual/community.

2.

For what reason was the Chipko Movement launched?(a) Protection of humans(b) Protection of forest(c) Protection of ponds and lakes(d) Protection of animalsI got this question in an interview for job.I'd like to ask this question from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer»

The correct answer is (B) Protection of forest

To EXPLAIN: The Chipko Movement was a non-violent social and ECOLOGICAL movement by RURAL villagers launched for the protection of forests. It was DONE in 1974 in the Garhwal Himalayas.

3.

What is the process of re-growing a forest that once existed but was cut-down in the past called?(a) Deforestation(b) Jhum cultivation(c) Reforestation(d) Greenhouse effectThe question was posed to me in an online interview.My doubt is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

Right answer is (c) Reforestation

Easiest explanation: The process of RESTORING or re-growing a forest that once existed but was removed or cut-down in the PAST is KNOWN as the reforestation. It is ALSO known as AFFORESTATION. It may occur naturally but the process can be sped up by planting more trees.

4.

Which one of the following is known as the slash and burn agriculture?(a) Afforestation(b) Crop cultivation(c) Room cultivation(d) Jhum cultivationThis question was addressed to me in a national level competition.I want to ask this question from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer» CORRECT answer is (d) Jhum cultivation

The best explanation: The slash and BURN agriculture INCLUDES growing crops by CUTTING down the trees and vegetation of the forest and burning the plant remains for agricultural use. It is ALSO known as the jhum cultivation and is mostly practiced in the north-eastern states of India.
5.

By the end of the twentieth century what percent of the land of India was covered by forests?(a) 19.4 %(b) 30.3 %(c) 50.5 %(d) 56.8 %The question was asked in an online interview.I need to ask this question from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

The CORRECT ANSWER is (a) 19.4 %

Easiest explanation: Almost 30 percent of the land in India was covered by forests at the beginning of the twentieth century. This was REDUCED to 19.4 percent at the end of the century. The main reason for this depletion was increasing deforestation due to the increase in the HUMAN POPULATION.

6.

In which of the following process the farmers cut down the trees of the forest and burn the plant remains?(a) Room cultivation(b) Jhum cultivation(c) Crop cultivation(d) AfforestationI got this question in final exam.Question is from Environmental Issues in division Environmental Issues of Biology – Class 12

Answer»

The correct choice is (b) Jhum cultivation

Best explanation: The PROCESS of GROWING crops by cutting down the trees and vegetation of the forest and burning the plant remains for agriculture is known as jhum cultivation. It is ALSO known as the slash and burn agriculture and is mostly practiced in the north-eastern STATES of India.

7.

What is the process of removal of forest cover of an area called?(a) Afforestation(b) Deforestation(c) Pollution(d) Greenhouse effectThis question was posed to me in final exam.This intriguing question comes from Environmental Issues topic in section Environmental Issues of Biology – Class 12

Answer» RIGHT option is (b) Deforestation

To explain I would say: The process of removal of forest covers of an area that is the conversion of forested areas to non-forested ones is known as deforestation. Almost 40 percent of forests in the TROPICS compared 1 percent in the TEMPERATE REGION have been lost due to this.
8.

Which protocol was signed to control the emission of ozone-depleting substances?(a) France Protocol(b) Germany Protocol(c) India Protocol(d) Montreal ProtocolI have been asked this question by my school teacher while I was bunking the class.My question is based upon Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

Correct CHOICE is (d) Montreal PROTOCOL

Easiest explanation: To CONTROL the emission of ozone-depleting SUBSTANCES an international treaty, known as the Montreal Protocol, was signed. It was signed in 1987 by more than 175 countries in Montreal (Canada).

9.

Which of the following is an effect of the high dose of UV-B?(a) Night-blindness(b) Snow-blindness(c) Fatigue(d) NauseaThe question was asked during a job interview.My doubt is from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer» CORRECT choice is (B) Snow-blindness

The best explanation: UV-B is the shorter wavelength of UV. It PENETRATES deeper into the skin causing aging of skin and cancers. A HIGH dose of UB-B leads to snow-blindness, also known as arc eye or photokeratitis.
10.

What does the continuous depletion of ozone lead to?(a) Proper rains(b) Ozone formation(c) Ozone hole(d) Good yieldThe question was asked in an interview.This interesting question is from Environmental Issues in division Environmental Issues of Biology – Class 12

Answer» RIGHT choice is (c) Ozone HOLE

To explain: Due to the continuous DEGRADATION of ozone, the depletion of ozone occurs. This thinning in the layer of ozone is KNOWN as the ozone hole.
11.

In which region is the depletion of ozone particularly marked?(a) Equatorial region(b) Temperate region(c) Tropical region(d) Antarctic regionI had been asked this question during an online interview.I'd like to ask this question from Environmental Issues in portion Environmental Issues of Biology – Class 12

Answer»

Correct answer is (d) Antarctic region

Easy explanation: The stratosphere found in the upper layer of the atmosphere has GOOD OZONE. This layer acts as a SHIELD and absorbs the harmful, injurious ultraviolet (UV) radiations from the sun. In the Antarctic region, the DEPLETION of ozone particularly marked.

12.

Who enhances the degradation of ozone?(a) Hydrogen(b) Chlorofluorocarbons(c) Oxygen(d) Water vaporsThis question was addressed to me during an interview.My question is based upon Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

The correct option is (b) Chlorofluorocarbons

The explanation: Chlorofluorocarbons (CFCs) enhances the degradation of ozone by DISTURBING the CYCLE of ozone formation. CFCs UPON entering in stratosphere react with UV and RELEASE chlorine ions. These ions act as catalysts and degrade ozone releasing MOLECULAR oxygen.

13.

In which part of the atmosphere is the good ozone found?(a) Ionosphere(b) Stratosphere(c) Lithosphere(d) HydrosphereI got this question during an interview.Query is from Environmental Issues in division Environmental Issues of Biology – Class 12

Answer» CORRECT answer is (b) Stratosphere

For explanation: The stratosphere found in the upper LAYER of the atmosphere has good ozone. This layer acts as a SHIELD and absorbs the HARMFUL, injurious ultraviolet (UV) radiations from the sun.
14.

How is the thickness of the ozone in a column of air from the ground to the top of the atmosphere measured?(a) Dobson units(b) Hertz(c) Centimeter(d) AmpereI have been asked this question during an interview.My question is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

Right option is (a) DOBSON units

Explanation: Dobson unit (DU) is USED to measure the THICKNESS of the ozone in a COLUMN of air from the ground to the TOP of the atmosphere. A layer of pure ozone that is 0.01 mm thick at standard temperature and pressure is equivalent to one Dobson unit.

15.

Which one of the following ways can be used to control global warming?(a) Increasing the growth of human population(b) Planting trees(c) Increasing the use of fossil fuel(d) Increasing deforestationThis question was posed to me in an interview for job.The doubt is from Environmental Issues topic in portion Environmental Issues of Biology – Class 12

Answer»

The correct answer is (B) Planting trees

Explanation: The increase in temperature of EARTH due to an increase in the level of greenhouse GASES is known as global warming. This leads to various CHANGES in the environment. This can be controlled by planting trees and afforestation.

16.

What does the increase in the level of greenhouse gases lead to?(a) No change in ecosystem cycles(b) Proper plant growth(c) Proper rainfall(d) Global warmingThe question was posed to me by my school principal while I was bunking the class.Query is from Environmental Issues in portion Environmental Issues of Biology – Class 12

Answer»

The correct option is (d) GLOBAL WARMING

The explanation: Global warming is the phenomenon occurring due to an increase in the level of greenhouse gases. This leads to considerable heating and an increase in temperature of Earth leading to deleterious CHANGES in the environment. This CAUSES odd climatic changes.

17.

Which gases are commonly known as greenhouse gases?(a) Nitrogen(b) Carbon dioxide(c) Chlorine(d) OxygenI got this question in unit test.I would like to ask this question from Environmental Issues topic in division Environmental Issues of Biology – Class 12

Answer»

The correct choice is (b) Carbon DIOXIDE

Explanation: The gases that lead to the HEATING of EARTH’s SURFACE and atmosphere due to the radiation from a planet’s atmosphere are KNOWN as greenhouse gases. They are responsible for the greenhouse effect. Some gases such as carbon dioxide, methane, nitrous oxide, etc.

18.

Which naturally occurring phenomenon is responsible for heating of Earth’s surface and atmosphere?(a) Eutrophication(b) Bio-magnification(c) Greenhouse effect(d) CookingThe question was posed to me by my college director while I was bunking the class.My doubt stems from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

Right choice is (C) Greenhouse effect

For explanation: The naturally occurring phenomenon is responsible for HEATING of Earth’s surface and atmosphere due to the radiation from a planet’s atmosphere is CALLED the greenhouse effect. It makes the atmosphere of Earth COMFORTABLE to live.

19.

What helps in warming the greenhouse?(a) Light(b) Energy(c) Plants(d) HeatThe question was posed to me during an interview.I want to ask this question from Environmental Issues topic in section Environmental Issues of Biology – Class 12

Answer»

Right answer is (d) Heat

The best I can explain: The plants such as FLOWERS and VEGETABLES requiring regulated CLIMATIC conditions are grown in a GREENHOUSE that is made up of transparent material. The heat is not allowed to escape out from the greenhouse that warms the internal environment.

20.

In a greenhouse the glass panel lets the light in, but what is not escaped?(a) Light(b) Heat(c) Energy(d) AirThis question was addressed to me by my school principal while I was bunking the class.My doubt stems from Environmental Issues in section Environmental Issues of Biology – Class 12

Answer»

The correct answer is (b) Heat

Best EXPLANATION: A greenhouse is a building made of transparent material in which plants REQUIRING regulated climatic conditions are grown. It has a glass PANEL that ALLOWS the entry of LIGHT but does not allow the departure of light.

21.

What is a small glasshouse used for growing plants especially during winter called?(a) Greenhouse(b) Lakehouse(c) Boathouse(d) TreehouseI got this question by my college director while I was bunking the class.Asked question is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

The correct answer is (a) Greenhouse

For explanation I WOULD say: A building MADE of transparent MATERIAL, in which plants requiring regulated CLIMATIC conditions are grown is CALLED a greenhouse. In this, the plants are grown especially during winters.

22.

From which phenomenon is the term ‘Greenhouse effect’ derived?(a) That occurs in a boathouse(b) That occurs in a greenhouse(c) That occurs in a blue house(d) That occurs in a houseI had been asked this question in unit test.I'd like to ask this question from Environmental Issues topic in section Environmental Issues of Biology – Class 12

Answer»

Correct option is (b) That occurs in a greenhouse

The explanation is: A greenhouse, also called a GLASSHOUSE is a building made of transparent material, in which plants such as FLOWERS and vegetables requiring regulated CLIMATIC conditions are grown. The word greenhouse GIVES rise to the term ‘Greenhouse effect’.

23.

Which of the following element is most hazardous to humans?(a) Phosphorous(b) Sulfur(c) Carbon(d) UraniumThe question was asked at a job interview.My enquiry is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

The correct choice is (d) URANIUM

For explanation: The most hazardous element among the following is uranium. It is a silvery-grey metal and its isotopes are highly unstable and RADIOACTIVE. This is EXTREMELY HARMFUL to HUMANS and creates various disorders and can be fatal.

24.

To dispose of which waste are the deep pits dug in desert areas or in the sea bottom?(a) Agricultural waste(b) Industrial waste(c) Radioactive waste(d) Sewage wasteThe question was asked in an online quiz.My question comes from Environmental Issues in portion Environmental Issues of Biology – Class 12

Answer»

Right choice is (c) RADIOACTIVE waste

The best I can EXPLAIN: Nuclear radiation is the emission or transmission of particles and PHOTONS in the form of waves or particles GIVEN off by nuclear waste during any nuclear reaction. This waste is usually disposed of in the deep pits dug in DESERT areas or in the sea bottom.

25.

Which of the following is an extremely potent pollutant?(a) Wastewater(b) Pesticide(c) Electronic waste(d) Nuclear wasteI have been asked this question during an internship interview.Query is from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer»

Right answer is (d) NUCLEAR waste

The BEST I can explain: The pollutants of nuclear waste are potent and strong that is can CAUSE severe damage even in low DOSES. The hazardous waste containing radioactive material is nuclear waste.

26.

At what dose does nuclear radiation create various disorders?(a) Extreme high dose(b) Low dose(c) High dose(d) No doseI have been asked this question during an internship interview.The question is from Environmental Issues in portion Environmental Issues of Biology – Class 12

Answer» CORRECT answer is (b) Low dose

The explanation: The nuclear WASTE during any nuclear REACTION emits or transmits off particles and photons in the form of waves or particles KNOWN as radiations. If exposed to the low amount they lead to VARIOUS disorders (especially cancer).
27.

At which dose is nuclear radiation considered lethal?(a) Low dose(b) Moderate dose(c) High dose(d) No doseThis question was posed to me in a job interview.Origin of the question is Environmental Issues in section Environmental Issues of Biology – Class 12

Answer»

The correct answer is (C) High dose

The BEST I can EXPLAIN: The emission or transmission of small particles in the form of waves or particles given off by nuclear WASTE during any nuclear reaction is known as nuclear RADIATION. If given in high dose these radiations are harmful and can be lethal.

28.

Which of the following causes mutations at a very high rate?(a) Automobiles(b) Compost(c) Fertilizers(d) RadiationI had been asked this question during a job interview.I want to ask this question from Environmental Issues topic in portion Environmental Issues of Biology – Class 12

Answer»

The correct choice is (d) RADIATION

The EXPLANATION: Nuclear radiation is the emission or TRANSMISSION of particles and photons in the form of waves or particles given off by nuclear WASTE during any nuclear reaction. This is extremely harmful to humans as it causes mutations at a very high RATE which may be fatal.

29.

Which of the following problem occurs due to the use of nuclear energy?(a) Accidental leakage(b) Formation of compost(c) Formation of gobar gas(d) Generation of electricityI have been asked this question in an online quiz.I want to ask this question from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

Right answer is (a) ACCIDENTAL LEAKAGE

To explain: The energy obtained by the splitting of atoms in a reactor that is used for the generation of steam using hot water for turning a TURBINE and GENERATING electricity is known as nuclear energy. Accidental leakage is the MAIN problem occurring due to the use of nuclear energy (Three Mile Island and Chernobyl incidents).

30.

Initially which energy was approved as a non-polluting way for generating electricity?(a) Water energy(b) Nuclear energy(c) Solar energy(d) Soil energyI have been asked this question in final exam.I'm obligated to ask this question of Environmental Issues topic in portion Environmental Issues of Biology – Class 12

Answer»

Right option is (B) Nuclear energy

Explanation: The energy in the core of an ATOM that COMES from splitting atoms in a reactor to generate steam USING hot water for turning a turbine and generating electricity is KNOWN as nuclear energy. Initially, it was approved as a non-polluting way of generating electricity.

31.

Which of the following can be created using crop waste?(a) Automobiles(b) Water(c) Compost(d) PlantsThis question was posed to me in class test.This is a very interesting question from Environmental Issues topic in division Environmental Issues of Biology – Class 12

Answer» CORRECT choice is (c) Compost

To explain I would say: The crop waste such as twigs, roots, HUSK, stem, or any organic matter that has been DECOMPOSED can form compost. It is regarded as a soil conditioner and is RICH in nutrients.
32.

What is done in integrated organic farming?(a) Less harmful waste is utilized by people(b) Waste is not generated(c) Waste products are disposed of(d) Waste products of one process are used as a nutrient for other processesI have been asked this question in an international level competition.My question is taken from Environmental Issues in division Environmental Issues of Biology – Class 12

Answer»

Correct answer is (d) Waste products of one PROCESS are used as a nutrient for other processes

The explanation is: A cyclic and zero waste procedure that primarily AIMS at cultivating the land and raising crops in such a way that the waste products of one process is used as a nutrient for other process is known as integrated organic farming. It MAXIMIZES income in relation to AREA, time, and efforts.

33.

Which of the following is a cyclic and zero waste procedure?(a) Radioactive waste management(b) Oil-spill cleaning(c) Integrated organic farming(d) Reduction in thermal heatThis question was addressed to me at a job interview.Asked question is from Environmental Issues in section Environmental Issues of Biology – Class 12

Answer»

Right choice is (c) Integrated organic FARMING

To explain I WOULD say: A CYCLICAL and zero waste procedure that PRIMARILY aims at cultivating the land and RAISING crops in such a way that the waste products of one process is used as a nutrient for other process is known as integrated organic farming. It maximizes income in relation to area, time, and efforts.

34.

What does the fertilizers and farm animal waste cause?(a) Air pollution(b) Industrial pollution(c) Sewage pollution(d) Agricultural water pollutionThis question was posed to me in an online quiz.My enquiry is from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer»

The correct option is (d) Agricultural WATER pollution

Explanation: Fertilizers and farm animal WASTE LEAD to agricultural water pollution. When CHEMICALS from fertilizers and pesticides make their way into the groundwater they contaminate the only usable water source.

35.

What can be construed to reduce water erosion?(a) Rivers(b) Check dams(c) Hot springs(d) OceansI got this question during an interview.I want to ask this question from Environmental Issues topic in section Environmental Issues of Biology – Class 12

Answer» RIGHT answer is (b) Check dams

To explain I would say: A small sometimes temporary, dam constructed across a drainage DITCH, SWALE, or channel to retain water upstream, so that the water PERCOLATES into the ground and recharges the groundwater table is a check dam. It is usually constructed to reduce the EROSION of soil.
36.

What is the farming called in which there is less use of chemicals and lesser production of waste?(a) Inorganic(b) Environmental(c) Organic(d) Man-madeThis question was posed to me in my homework.My question comes from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer» CORRECT CHOICE is (c) ORGANIC

For explanation: The farming having less or negligible use of chemicals and thus producing a less amount of waste is known as organic farming. It involves the cultivation of plants and rearing of animals in NATURAL ways using biological materials (compost, MANURE), avoiding synthetic substances to reduce pollution.
37.

Which one of the following agro-chemical waste is sprayed on plants to increase their growth?(a) Fertilizers(b) Water(c) Compost(d) PesticidesThis question was addressed to me in examination.Query is from Environmental Issues topic in division Environmental Issues of Biology – Class 12

Answer»

Right choice is (d) PESTICIDES

For explanation: A chemical used to help manage AGRICULTURE and farming area is known as an agrochemical and if this chemical does any harm to the ecosystem it is considered as agrochemical WASTE. Pesticides, insecticides, herbicides, FUNGICIDES, and nematicides, are the agrochemical waste that is sprayed on plants to increase their growth.

38.

Which one of the following agro-chemical waste is added in the soil to increase the growth of plants?(a) Pesticides(b) Fertilizers(c) Water(d) CompostI have been asked this question during an internship interview.My doubt is from Environmental Issues in portion Environmental Issues of Biology – Class 12

Answer» RIGHT CHOICE is (b) FERTILIZERS

The best explanation: An agricultural chemical used to HELP manage agriculture and farming area is known as an agrochemical. When this chemical harms the ecosystem it is said to be the agrochemical waste. Fertilizers are the agrochemical waste is ADDED in the soil to increase the growth of plants.
39.

Which kind of pollution is caused mainly due to agrochemical waste?(a) Soil(b) Sound(c) Water(d) AirThe question was asked in an online interview.My query is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

The CORRECT ANSWER is (a) Soil

The EXPLANATION is: An AGROCHEMICAL is a chemical used to help manage agriculture and farming AREA. When this chemical harms the ecosystem it is said to be the agrochemical waste. This waste mainly leads to the pollution of soil.

40.

Which of the following is an agrochemical waste?(a) Mobiles(b) Pesticides(c) Sludge(d) ScrapThis question was posed to me during an interview.I'd like to ask this question from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer»

The CORRECT choice is (b) Pesticides

The best I can explain: An AGRICULTURAL chemical used to HELP manage agriculture and farming area is known as an agrochemical. It includes insecticides, herbicides, fungicides and nematicides, antibiotics, and PLANT hormones. When any of the above chemicals harm the ecosystem it is SAID to be the agrochemical waste.

41.

What can be made using bio-degradable waste?(a) Automobiles(b) Metals(c) Water(d) Gobar gasI got this question during an internship interview.The query is from Environmental Issues in portion Environmental Issues of Biology – Class 12

Answer»

The correct choice is (d) Gobar GAS

The explanation is: The bio-degradable waste can be used to produce the gobar gas. Also known as biogas, it is a mixture of methane, CARBON DIOXIDE, hydrogen, and hydrogen sulfide PRODUCED by the breakdown of organic matter in the absence of oxygen.

42.

Which of the following is a method of solid waste disposal?(a) Sludge method(b) Injection(c) Incineration(d) EutrophicationI have been asked this question in my homework.This intriguing question originated from Environmental Issues in division Environmental Issues of Biology – Class 12

Answer»

The CORRECT choice is (c) Incineration

Easiest explanation: Incineration is a method USED for the disposal of SOLID waste. It is a PROCESS that involves the combustion of organic substances through controlled burning. An incinerator (a furnace where waste is burnt) is COMMONLY used for this process.

43.

Which one of the following is a component of hospital waste?(a) Scrap(b) Toxic metals(c) Pathogens(d) MobilesI got this question in a national level competition.I need to ask this question from Environmental Issues topic in division Environmental Issues of Biology – Class 12

Answer»

The CORRECT answer is (c) PATHOGENS

Explanation: Medical waste is any kind of waste that contains infectious material PRODUCED during the DIAGNOSIS, treatment, or immunization of animals. It contains pathogens, chemicals, needles, organic waste, etc.

44.

What does mining waste consist of?(a) Mobiles(b) Scrap(c) Sludge(d) Mine-dust, rock trailingThe question was posed to me by my college professor while I was bunking the class.The doubt is from Environmental Issues topic in section Environmental Issues of Biology – Class 12

Answer»

Right ANSWER is (d) MINE-dust, rock trailing

To explain I would say: The high-volume material generated during processes of extraction, BENEFICIATION, and further PHYSICAL and chemical processing of METALS and non-metals is known as mining waste. Mine-dust, rock trailing, toxic metals, etc. are included in mine waste.

45.

Which of the following waste can be put into deep pits in the ground and be left for the natural breakdown?(a) Half-degradable(b) Non-biodegradable(c) Bio-degradable(d) RecyclableThe question was asked in a job interview.My question is from Environmental Issues topic in division Environmental Issues of Biology – Class 12

Answer»

Correct choice is (c) Bio-degradable

Easy explanation: The biodegradable waste includes any ORGANIC matter obtained from plants or animals that can be put into deep pits in the ground and be LEFT for the natural breakdown. This breakdown can be DONE by micro-organisms and other living things by composting, AEROBIC digestion, anaerobic digestion using different enzymes to OBTAIN essential food and nutrients.

46.

In which three types can be the waste categorized?(a) Non-biodegradable, half-recyclable, and half-degradable(b) Degradable, half-degradable, and fully degradable(c) Recyclable, half-recyclable, and fully recyclable(d) Bio-degradable, recyclable, and the non-biodegradableI had been asked this question in an international level competition.Asked question is from Environmental Issues topic in division Environmental Issues of Biology – Class 12

Answer» CORRECT CHOICE is (d) Bio-degradable, recyclable, and the non-biodegradable

The EXPLANATION: There are three types in which the waste is categorized, they are bio-degradable, recyclable, and non-biodegradable. The waste should be SORTED before any further USE or treatment.
47.

Which of the following waste contributes heavily to environmental pollution?(a) Bio-degradable waste(b) Plastic waste(c) Liquid waste(d) Recyclable wasteI had been asked this question in semester exam.The above asked question is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

Answer»

Correct ANSWER is (b) PLASTIC waste

For explanation: Plastic waste contributes heavily to environmental pollution. It includes plastic that isn’t recycled and plastic TAKES centuries to degrade. This plastic may enter into water BODIES and harm aquatic life.

48.

What of the following was adopted as the substitute for open-burning dumping grounds?(a) Lakes(b) Sanitary landfills(c) Land(d) ForestsI have been asked this question in an online quiz.I want to ask this question from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer» RIGHT option is (B) Sanitary landfills

For EXPLANATION I would say: The sanitary landfill is an engineered method of controlled disposal where waste is isolated from the environment until it is safe. It is a substitute for open-burning dumps containing degradable, semi-degradable, and non-biodegradable waste.
49.

What are wastes from homes, hospitals, offices, schools, stores, etc., that are collected and disposed of by the municipality called?(a) Municipality Solid waste(b) Liquid waste(c) Kitchen waste(d) Solid wasteThe question was posed to me during a job interview.This intriguing question comes from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer»

The correct ANSWER is (a) Municipality Solid waste

To elaborate: The wastes from homes, hospitals, offices, schools, stores, etc., that includes food wastes, GLASS, metals, leather, paper, plastics, rubber, TEXTILE,yard wastes, toxic waste, biomedical waste, etc. that is collected and disposed of by the municipality is CALLED municipality solid waste. This waste VARIES with the municipality.

50.

What is every material that goes to trash known as?(a) Liquid waste(b) Solid waste(c) Wastewater(d) Kitchen wasteI have been asked this question during an online interview.The doubt is from Environmental Issues topic in section Environmental Issues of Biology – Class 12

Answer»

Correct choice is (B) Solid waste

Easiest explanation: Every material that GOES to trash is known as solid waste. It may be any garbage, refuse, that may include any solid, LIQUID, semi-solid, or contained gaseous material that is obtained from any industrial, COMMERCIAL, or community ACTIVITIES.