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Generate QuizEnvironment – Fill in the Blank – GK Questions
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The dark, organic material in soils that forms from the decay of plant and animal matter is known as _____.
- Loam
- Humus
- Clay
- Silt
Answer: Humus
Humus improves soil fertility, structure, and its ability to retain moisture and nutrients.
The process of establishing a forest or stand of trees in an area where there was no previous tree cover is called _____.
- Deforestation
- Reforestation
- Afforestation
- Silviculture
Answer: Afforestation
Afforestation is the planting of trees in areas that have not recently been forested, whereas reforestation is replanting in depleted forests.
The apex national body in India responsible for monitoring pollution standards is the Central _____ Control Board (CPCB).
- Environmental
- Pollution
- Ecology
- Resource
Answer: Pollution
The Central Pollution Control Board (CPCB) is a statutory organization under the Ministry of Environment, Forest and Climate Change.
The headquarters of the International Union for Conservation of Nature (IUCN) is located in _____, Switzerland.
- Zurich
- Geneva
- Bern
- Gland
Answer: Gland
IUCN, the global authority on the environment and sustainable development, has its secretariat in Gland, Switzerland.
CNG, widely used as a cleaner alternative fuel for vehicles, stands for _____.
- Carbonated Natural Gas
- Compressed Natural Gas
- Condensed Nitrogen Gas
- Crude Natural Gas
Answer: Compressed Natural Gas
CNG is natural gas (mostly methane) stored at high pressure, serving as a cleaner substitute for gasoline and diesel.
The clean energy derived directly from the sun's radiation to generate electricity or heat is called _____ energy.
- Wind
- Geothermal
- Solar
- Tidal
Answer: Solar
Solar energy is harnessed using photovoltaic cells or solar thermal collectors to capture the sun's radiation.
The first biosphere reserve established in India in 1986 is the _____ Biosphere Reserve.
- Nanda Devi
- Sundarbans
- Nilgiri
- Gulf of Mannar
Answer: Nilgiri
The Nilgiri Biosphere Reserve, spanning Kerala, Tamil Nadu, and Karnataka, was the first to be set up in India.
Gir National Park, the only natural habitat of the Asiatic Lion, is located in the state of _____.
- Madhya Pradesh
- Rajasthan
- Gujarat
- Maharashtra
Answer: Gujarat
Gir National Park and Wildlife Sanctuary is situated in the Saurashtra region of Gujarat.
The Vienna Convention of 1985 is an international framework treaty for the protection of the _____.
- Marine Environment
- Ozone Layer
- Tropical Rainforests
- Antarctic Treaty System
Answer: Ozone Layer
The Vienna Convention established the framework for international cooperation to protect the ozone layer, which led to the Montreal Protocol.
The Stockholm Convention is a global treaty aimed at protecting human health and the environment from _____.
- Greenhouse Gases
- Persistent Organic Pollutants (POPs)
- Heavy Metals
- Radioactive Waste
Answer: Persistent Organic Pollutants (POPs)
POPs are toxic chemicals that adversely affect human health and the environment globally, persisting for long periods.
The Biological Diversity Act was enacted by the Indian Parliament in _____ to conserve biological diversity.
- 1992
- 1994
- 2000
- 2002
Answer: 2002
The Biological Diversity Act, 2002 was enacted to meet the obligations under the Convention on Biological Diversity (CBD).
The Forest (Conservation) Act, which restricts the dereservation of forests, was enacted in _____.
- 1927
- 1972
- 1980
- 1986
Answer: 1980
The Forest Conservation Act 1980 was enacted to check deforestation and conserve forests, making prior central approval mandatory for non-forest use.
The ozone layer, which protects the Earth from harmful UV radiation, is primarily located in the _____.
- Troposphere
- Stratosphere
- Mesosphere
- Thermosphere
Answer: Stratosphere
About 90% of the ozone in the atmosphere sits in the stratosphere, approximately 15 to 35 kilometers above Earth's surface.
The Paris Agreement (2015) aims to limit global warming to well below _____ degrees Celsius compared to pre-industrial levels.
- 1.5
- 2
- 2.5
- 3
Answer: 2
The central aim of the Paris Agreement is to keep the rise in global average temperature well below 2°C, pursuing efforts to limit it to 1.5°C.
According to the Central Pollution Control Board (CPCB), the permissible 24-hour limit for PM2.5 in India is _____ µg/m³.
- 40
- 60
- 100
- 120
Answer: 60
The CPCB sets the National Ambient Air Quality Standards (NAAQS) for PM2.5 at 60 µg/m³ for a 24-hour average.
The primary gases responsible for the formation of acid rain are _____ and nitrogen oxides.
- Carbon dioxide
- Sulphur dioxide
- Methane
- Ozone
Answer: Sulphur dioxide
Sulphur dioxide (SO2) and nitrogen oxides (NOx) react with water, oxygen, and other chemicals to form sulfuric and nitric acids.
Project Tiger, a major wildlife conservation initiative, was launched in India in the year _____.
- 1970
- 1972
- 1973
- 1980
Answer: 1973
Project Tiger was launched on April 1, 1973, to protect the endangered Bengal tiger in India.
The Red Data Book, which records endangered species, is published by _____.
- WWF
- UNEP
- IUCN
- CITES
Answer: IUCN
The International Union for Conservation of Nature (IUCN) maintains the Red List of Threatened Species.
The transitional zone between two distinct ecological communities is called an _____.
- Ecotone
- Biome
- Niche
- Habitat
Answer: Ecotone
An ecotone is a transition area between two biological communities, where two communities meet and integrate.
The pyramid of energy in any ecosystem is always _____.
- Inverted
- Upright
- Spindle-shaped
- Variable
Answer: Upright
Energy decreases at each successive trophic level due to the 10% law of energy transfer, making the energy pyramid always upright.