UGC NET Paper 1 — Environmental Science

Why are the WHO guidelines on air pollution not binding on member states?

Given below are two statements: Statement I: Bio-magnification can occur due to consumption of fish by humans. Statement II: Bio-magnification is the tendency of harmful substances...

Which of the following statements are true about the world's forests? (A) Forests act as huge carbon sinks. (B) Most of the world's forests are concentrated in the sub-tropical reg...

Statement I: Natural soil erosion is the gradual removal of topsoil by natural processes. Statement II: Accelerated soil erosion is caused by human activities. The rate of accelera...

Threshold concentration of identified pollutants

The measure adopted by the WHO to limit the air pollution is:

Setting a new standard of air quality in its updated guidelines

Incinerate plastic waste

Focus on all types of health risks

The assessment of the life cycle of a product is mainly done keeping in mind:

Dissolved Oxygen (DO) is important for

Organochlorine pesticides such as DDT's human toxicity is comparatively lower. It is their impact on food chain that leads to acute human toxicity. Their properties that cause them...

Identify the correct sequence of average noise levels in increasing order of their magnitude from different sources. (A) City street corner (B) Conversational speech (C) Highway (D...

Given below are two statements Statement I: Concentration of Volatile Organic Chemicals is generally 100-1000 times higher in surface water than underground water. Statement II: Th...

Carbon monoxide pollution may cause loss of consciousness or death in the exposed individual. For such an an event to occur, the likely minimum percentage saturation level of carbo...

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): Geothermal fluids are rich in salts and other contaminants...

Which of the following are true about Joint Forest Management (JFM)? (A) Its concept was introduced through the Environment (Protection) Act, 1986 (B) It involves both state forest...

Geothermal field requires combination of following three conditions (A) A natural underground source of water (B) A mountain in the vicinity (C) An impermeable layer (D) A coal min...

Given below are two statements: Statement I : Bioconcentration in humans can occur due to consumption of fish. Statement II : Bioconcentration is the tendency of hazardous substanc...

Which of the following are examples of secondary air pollutants? (A) Sulphate (B) Nitric Oxide (NO) (C) Photochemical smog (D) Peroxy Acetyl Nitrate (PAN) (E) Polycyclic Aromatic H...

Which of the following pesticides is expected to persist in the environment for longer period as compared to others?

1 mm layer of pure ozone gas around earth at normal temperature and pressure is equivalent to:

According to Noise Pollution (Regulation and Control) Rules in India, noise (Leq) in educational institutions during night time (10pm-6am) must not exceed

औद्योगिक काल से पहले से वातावरण में कार्बन डाइऑक्साइड सांद्रता में प्रतिशत वृद्धि लगभग है:

The percentage increase in carbon dioxide concentration in atmosphere from pre-industrial times is approximately

The only energy source which is not in anyway related to Sun is

Given below are two statements: Statement I : To qualify as a biodiversity hotspot. an area must have at least 15000 species of vascular plants. Statement II : To qualify as a biod...

Match List I with List II: List I (Pollutants) (A) Carbon monoxide (CO) (B) Nitrogen dioxide (NO2) (C) Volatile Organic Compounds (VOCs) (D) Ozone (O3) List II (Health Effects) (I)...

At a typical urban site, the ground level ozone concentration would be maximum at what time of the day?

Which one among the following is not a unit of measurement of surface ozone?

Stable atmospheric conditions help in

Given below are two statements: Statement I: Ozone hole over the Antarctica was discovered in 1987 Statement II: The Montreal Protocol envisaged 50% reduction in the use of CFCs, i...

Which of the following pollutants is considered as surrogate for eye irritation?

Arrange the following terms chronologically according to the time these were first introduced. (A) Principle of common but differentiated responsibility. (B) Sustainable Developmen...

Match List I with List II: List I (Protocol/Summit) (A) Paris Agreement (B) Kyoto Protocol (C) Rio declaration (D) Montreal Protocol List II (Theme) (I) Emissions trading (II) Ozon...

Pyrolysis helps in addressing the Problem of 1. Air Pollution 2. Water Pollution 3. Municipal Solid Wastes 4. Electronic Wastes

Aeration process is efficiently used to remove

Given below are two statements: One is labelled as Assertion (A) and the other is labeled as Reason (R). Assertion (A): Energy produced from biomass is considered 'carbon neutral'....

Match List I with List II: List I (A) Mist (B) Smoke (C) Fume (D) Smog List II (I) Aerosols consisting of solid particles (II) Aerosols produced by condensation of hot vapours of m...

Which of the following are responsible for global cooling?

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion (A): Large scale dams also cause the Green House Gas emissions. Reas...

Given below are two statements: Statement (I): Atmospheric stability is important because it determines the ability of pollutants to disperse vertically in the atmosphere. Statemen...

Given below are two statements Statement I: Dioxins are chlorinated compounds. Statement II: Dioxins cause deaths of birds and other stray animals due to their widespread use as he...

The period of Sendai framework for disaster risk reduction is 1. 2015 - 2030 2. 2020 - 2040 3. 2015 - 2025 4. 2020 - 2030

Statement I: Dioxins are chlorinated compounds. Statement II: Widespread use of dioxins as herbicides and pesticides causes the death of birds and stray animals. Choose the correct...

The highest nonzero dose at which no toxic effect is observed in a study on animals is called

Given below are two statements Statement I: Pesticides such as DDT are particularly disruptive to food chains. Statement II: Pesticides are very persistent and soluble in water. In...

Which of the following statements about World's forests are correct? (A) Forests act as a huge carbon sink. (B) Most of the World's forests are concentrated in the subtropical belt...

Which of the following are Sustainable Development Goals (SDGs)?

What is the correct order of Risk assessment due to exposure of some chemicals to the humans A. Dose Response Assessment B. Exposure Assessment C. Risk Characterization D. Hazard I...