Environment & Ecology questions asked in previous year papers of SSC, Banking, Railway and other exams, with the exam and year, answers and explanations.
368 previous-year questions
Study of a single species and the environmental factors in its habitat is called
Autecology studies one species, or one individual, in relation to the physical and biological conditions of the place where it lives.
Read the full explanation →Which one of the following diseases is caused by Cadmium pollution?
Itai-itai disease is caused by cadmium poisoning and was first reported in Japan. In the early 20th century, mining waste from upstream released cadmium into the Jinzu river in Toyama Prefecture, Japan.
Read the full explanation →Which of the following are the necessary conditions for the growth of coral reefs?
1. Photic conditions
2. Clean and sediment free water
3. Sea salinity of 6%
4. Tropical sea water with temperature of 20°C to 21°C
Select the correct answer using the code given below:
Corals need sunlit, clean, warm tropical water, but a salinity of 6% is far too high for them, so statement 3 is wrong.
Read the full explanation →With reference to 'Global Climate Change Alliance', which of the following statements is/are correct?
1. It is an initiative of the European Union.
2. It provides technical and financial support to targeted developing countries to integrate climate change into their development policies and budgets.
3. It is coordinated by World Resources Institute (WRI) and World Business Council for Sustainable Development (WBCSD).
Select the correct answer using the code given below:
The Global Climate Change Alliance is a European Union programme; WRI and WBCSD run a different initiative, the Greenhouse Gas Protocol.
Read the full explanation →Which one of the following is NOT correct about organic farming?
Organic farming relies heavily on crop rotation, not on as little of it as possible, so this is the statement that is not correct.
Read the full explanation →Which one of the following tiger reserves of India has "Bhoorsingh the Barasingha" as its official mascot ?
In 2017 Kanha in Madhya Pradesh became the first tiger reserve in India to adopt an official mascot, a cartoon barasingha named Bhoorsingh.
Read the full explanation →Leakage of which one of the following gases had caused Bhopal Gas Tragedy in the year 1984 ?
On the night of 2-3 December 1984, methyl isocyanate (MIC) gas leaked from the Union Carbide pesticide plant in Bhopal.
Read the full explanation →Which of the following diseases are caused by the consumption of water contaminated by mercury and nitrate ?
Mercury in water causes Minamata disease, and excess nitrate causes blue baby syndrome.
Read the full explanation →According to the Wildlife (Protection) Act, 1972, which of the following animals cannot be hunted by any person except under some provisions provided by law ? 1. Gharial 2. Indian wild ass 3. Wild buffalo Select the correct answer using the code given below:
All three are listed in Schedule I of the Act, so none of them can be hunted except in the narrow cases the Act itself allows.
Read the full explanation →A biological community in its environment such as a pond, an ocean, a forest, even an aquarium is known as
An ecosystem is a community of living things together with the non-living environment they interact with, and it can be as large as an ocean or as small as an aquarium.
Read the full explanation →The term 'Domestic Content Requirement' is sometimes seen in the news with reference to
Domestic Content Requirement (DCR) is the rule that certain solar projects must use solar cells and modules made in India.
Read the full explanation →In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration ?
1. Abandoned and uneconomic coal seams
2. Depleted oil and gas reservoirs
3. Subterranean deep saline formations
Select the correct answer using the code given below :
All three are geological traps where captured carbon dioxide can be pumped and stored deep underground. Carbon capture and storage (CCS) takes carbon dioxide from power plants or factories, compresses it and injects it into rock formations that can hold it for thousands of years.
Read the full explanation →Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences ?
1. Pollination of some plants could be adversely affected.
2. There could be a drastic increase in the fungal infections of some cultivated plants.
3. It could lead to a fall in the population of some species of wasps, spiders and birds.
Select the correct answer using the code given below :
Butterflies are pollinators and also food for many animals, so their decline would hurt pollination and their predators; it has no direct link with fungal diseases of crops.
Read the full explanation →Blue Baby Syndrome is caused by the contamination of
Blue baby syndrome, or methaemoglobinaemia, strikes infants who drink water with excess nitrate, usually from fertiliser runoff or sewage. In an infant's digestive system, nitrate is converted into nitrite, which oxidises the iron of haemoglobin and turns it into methaemoglobin.
Read the full explanation →In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique ?
1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.
2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.
3. Genetic engineering can be used to create microorganisms specifically designed for bioremediation.
Select the correct answer using the code given below :
Statements 1 and 3 are correct; heavy metals cannot be readily and completely removed by microbes. Bioremediation uses living organisms, mostly bacteria and fungi, to break down pollutants.
Read the full explanation →Arrange the following Tiger Reserves of India from North to South : 1. Dudhwa 2. Panna 3. Pench 4. Indravati Select the correct answer using the code given below.
Going south from the Nepal border, the order is Dudhwa, Panna, Pench and then Indravati.
Read the full explanation →Consider the following statements in respect of Trade Related Analysis of Fauna and Flora in Commerce (TRAFFIC) :
1. TRAFFIC is a bureau under United Nations Environment Programme (UNEP).
2. The mission of TRAFFIC is to ensure that trade in wild plants and animals is not a threat to the conservation of nature.
Which of the above statements is/are correct?
TRAFFIC is a non-governmental wildlife trade monitoring network, not a UNEP bureau, and its mission is the one given in statement 2.
Read the full explanation →What is the main aim of Montreal Protocol?
The Montreal Protocol was signed in 1987 and came into force in 1989 to phase out the substances that destroy stratospheric ozone, chiefly chlorofluorocarbons, halons and carbon tetrachloride used in refrigeration, foam and fire fighting.
Read the full explanation →In which year did the Kyoto Protocol come into force?
The Kyoto Protocol came into force on 16 February 2005. It had been adopted at Kyoto in Japan on 11 December 1997 as the first binding agreement under the United Nations Framework Convention on Climate Change of 1992.
Read the full explanation →After Wildlife Protection Act in 1972, the name of India's first wildlife conservation project was
Project Tiger was launched in 1973, the year after the Wildlife (Protection) Act came into force, and it was the first species recovery project of its kind in India.
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