MCQ
Pollution MCQ - Practice Questions with Answers
Solve 70 Pollution questions for RAS/RPSC preparation.
Practice questions
Q1Consider the following statements: 1. Ground-level ozone is emitted directly into the air by cars and power plants. 2. Ozone is a gas composed of three atoms of oxygen. 3. Stratospheric ozone protects living things from ultraviolet radiation from the Sun. Which of the statements given above are correct?
Statement 1 is incorrect: ground-level ozone is not emitted directly; it forms through reactions between NOx and VOC in sunlight. Statement 2 is correct: ozone has three oxygen atoms. Statement 3 is correct: stratospheric ozone protects living things from ultraviolet radiation.
Q2Consider the following statements: 1. The Plastic Waste Management Rules, 2016 increased the minimum thickness of plastic carry bags from 40 microns to 50 microns. 2. The Rules aimed to expand applicability from municipal areas to rural areas. 3. The Rules introduced producer and brand-owner collect-back responsibility under extended producer responsibility. 4. The Rules imposed a blanket ban on the use of plastic all over India because a complete substitute had been found. Which of the statements given above are correct?
Statement 1 is correct: the minimum thickness was increased from 40 to 50 microns. Statement 2 is correct: the Rules aimed to extend applicability to rural areas. Statement 3 is correct: collect-back based on extended producer responsibility is stated. Statement 4 is incorrect: the PIB note a complete substitute had not been found and a blanket ban was impractical and undesirable.
Q3Consider the following statements: 1. Carbon monoxide is a colorless and odorless gas. 2. The greatest outdoor sources of carbon monoxide are vehicles or machinery that burn fossil fuels. 3. Carbon monoxide increases oxygen transport in the bloodstream. Which of the statements given above are correct?
Statement 1 is correct: carbon monoxide is colorless and odorless. Statement 2 is correct: EPA identifies fossil-fuel-burning vehicles or machinery as the greatest outdoor sources. Statement 3 is incorrect: carbon monoxide reduces, rather than increases, oxygen transport in blood.
Q4Consider the following statements: 1. The Central Pollution Control Board was constituted under the Water (Prevention and Control of Pollution) Act, 1974. 2. The CPCB was entrusted with powers and functions under the Air (Prevention and Control of Pollution) Act, 1981. 3. The principal functions of CPCB are limited to wildlife conservation and do not include water or air pollution control. Which of the statements given above are correct?
Statement 1 is correct: CPCB was constituted under the Water Act, 1974. Statement 2 is correct: it was later entrusted with powers and functions under the Air Act, 1981. Statement 3 is incorrect: CPCB's principal functions include prevention, control and abatement of water pollution and improvement of air quality.
Q5Consider the following statements about Pollution: 1. Noise-rule implementation requires States to categorize areas into industrial, commercial, residential or silence zones. 2. An area of not less than 100 metres around hospitals, educational institutions and courts may be declared a silence zone. 3. Noise levels in a zone may exceed the Schedule standards if the source is vehicular movement. 4. The authority is responsible for enforcement of noise-pollution control measures and compliance with noise standards. Which of the statements given above are correct?
Statements 1, 2 and 4 are correct under the Noise Pollution Rules as reproduced by CPCB. Statement 3 is false because the State must take measures including for vehicular noise and ensure existing noise levels do not exceed the prescribed standards.
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More questions
61. The Water Act, 1974 provides for prevention and control of water pollution and for maintaining or restoring wholesomeness of water. 2. The Air Act, 1981 provides for prevention, control and abatement of air pollution. 3. CPCB advises the Central Government on matters concerning prevention and control of water and air pollution and improvement of air quality. Which of the statements given above are correct?
7Consider the following statements about Pollution: 1. Biomedical Waste Management Rules, 2016 classify healthcare biomedical waste into four colour-coded segregation categories. 2. The red category includes contaminated recyclable waste from disposable items such as tubing and intravenous tubes. 3. The white category is for waste sharps including metals. 4. General waste in healthcare facilities is defined as waste that has contacted hazardous, infectious, chemical or biological secretions. Which of the statements given above are correct?
81. Solid Waste Management Rules, 2016 apply only to mega cities and not to smaller urban local bodies. 2. Waste generators are required to segregate waste and store it separately before handing it over. 3. Domestic hazardous household waste should be kept separately from biodegradable and recyclable waste streams. Which of the statements given above are correct?
9Consider the following statements: 1. The main function of the Central Board under the Water Act is to promote cleanliness of streams and wells in different areas of the States. 2. A State Board under the Water Act may lay down, modify or annul effluent standards for sewage and trade effluents. 3. The Air Act, 1981 was enacted to provide for prevention, control and abatement of water pollution. 4. Under the Environment (Protection) Act, an environmental pollutant may be a solid, liquid or gaseous substance present in a concentration injurious to the environment. Which of the statements given above are correct?
10Consider the following statements: 1. Dissolved oxygen refers to the concentration of oxygen gas incorporated in water. 2. Oxygen enters water only through aquatic-plant photosynthesis, not by absorption from the atmosphere. 3. Cold water holds more oxygen than warm water. 4. Thermal discharges such as cooling water from a power plant can raise water temperature and lower its oxygen content. Which of the statements given above are correct?
11Consider the following statements: 1. The Solid Waste Management Rules, 2016 apply to every urban local body from mega city to panchayat level. 2. Under these rules, every waste generator shall segregate waste and store it separately before handing it over. 3. The Solid Waste Management Rules, 2016 exclude waste from domestic, institutional and commercial generators. Which of the statements given above are correct?
12Consider the following statements: 1. Under the Noise Pollution Rules, state governments categorize areas into industrial, commercial, residential or silence areas/zones. 2. An area not less than 100 metres around hospitals, educational institutions and courts may be declared as a silence area/zone. 3. Development authorities are required to ignore noise pollution while planning developmental activity. Which of the statements given above are correct?
13Consider the following statements: 1. Particulate matter refers to inhalable particles and includes components such as sulphate, nitrates, black carbon, mineral dust and water. 2. Carbon monoxide is a colourless and odourless gas produced by incomplete combustion of carbonaceous fuels. 3. Sulfur dioxide is predominantly derived from evaporation of seawater, not from fossil fuel combustion. Which of the statements given above are correct?
14Consider the following statements: 1. The Environment (Protection) Act was enacted in 1986 with the objective of protection and improvement of the environment. 2. The Act empowers only State Governments, and not the Central Government, to establish authorities under section 3(3). 3. Authorities established under section 3(3) may be charged with preventing environmental pollution in all its forms. 4. Such authorities may tackle specific environmental problems peculiar to different parts of the country. Which of the statements given above are correct?
15Consider the following statements: 1. Acid rain results when sulphur dioxide and nitrogen oxides are emitted into the atmosphere and transported by wind and air currents. 2. Sulphur dioxide and nitrogen oxides react with water, oxygen and other chemicals to form sulphuric and nitric acids. 3. Acid deposition occurs only as rain and has no dry-deposition form. 4. Normal rain is slightly acidic because carbon dioxide dissolves in it to form weak carbonic acid. Which of the statements given above are correct?