Comprehensive collection of questions from Environment & Ecology asked in recent state service examinations. Each question is verified with official answer keys and step-by-step bilingual solutions.
Which one of the following acts as a biological indicator of air pollution?
Fly ash pollution is caused by—
Which of the following is/are responsible for acid rain?
Acid rain is caused by air pollution due to–
Which of the following is/are the main air pollutant(s) in metropolitan cities?
In which year was the Air (Prevention and Control of Pollution) Act enacted?
With reference to the Climate and Clean Air Coalition (CCAC), consider the following statements: 1. CCAC to reduce short-lived climate pollutants is a unique initiative of G20 group of countries. 2. The CCAC focuses on methane, black carbon and hydrofluorocarbons. Which of the statements given above is/are correct?
According to the Central Pollution Control Board, the air quality category with INDAQI range 101-200 is:
The ceramic disc of a catalytic converter that converts carbon monoxide emitted from vehicles into carbon dioxide is coated with-
What is the purpose of the 'PRANA' portal?
In which year was the National Clean Air Programme (NCAP) launched by the Central Government?
With reference to the WHO Air Quality Guidelines, consider the following statements: 1. The 24-hour mean of PM2.5 should not exceed 15 μg/m3 and annual mean should not exceed 5 μg/m3. 2. In a year, the highest levels of ozone pollution occur during periods of inclement weather. 3. PM10 can penetrate the lung barrier and enter the bloodstream. 4. Excessive ozone in the air can trigger asthma. Which of the statements given above are correct?
With reference to the 'Bio-Decomposer and Spray Programme of the Delhi Government', which of the following statements is/are correct? 1. Free bio-decomposer solution is provided to farmers to help convert crop stubble into manure. 2. The bio-decomposer solution is prepared using several fungi. Select the correct answer from the code given below:
Which of the following factors/causes generate benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished wooden furniture 5. Using products made of polyurethane Select the correct answer using the code given below:
Which one of the following is not a mechanical device/method for the control of air pollution?
With reference to 'fly ash' produced by the power plants using the coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the production of bricks for building construction. 2. Fly ash can be used as replacement for some of the Portland cement contents of concrete. 3. Fly ash is made only of silicon dioxide and calcium oxide, and does not contain any toxic elements. Select the correct answer using the code given below:
Smog is essentially caused by the atmospheric presence of-
In the cities of our country, which of the following atmospheric gases are normally considered in calculating the value of Air Quality Index? 1. Carbon dioxide 2. Carbon monoxide 3. Nitrogen dioxide 4. Sulphur dioxide 5. Methane Select the correct answer using the code given below:
The 'Ringelmann Scale' is used to measure the density of which of the following?
Environment modified by human activities is called -
A biodegradable pollutant is –
Which of the following is a biodegradable pollutant?
Which of the following is biodegradable?
Which of the following is a major cause of air pollution?
Which of the following is an air pollutant gas generated as a result of the combustion of fossil fuels?