Environmental Science In Agricultural MCQ Question and Answer | Agriculture MCQ Question

Inorganic compounds are NaCI, H₂O, SO₂, NH₃ and H₂SO₄, CO.
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound.
Some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, etc.), carbon monoxide, carbon dioxide, carbides.

Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. It is specific features that are:
A. It has distinct effect on soil microbiology and environmental chemistry.
B. The acid pollutants emitted in one country may be deposited as acid precipitation in several countries.
C. Acid rain affects both aquatic systems as well as vegetation.

American water plant that has become a troublesome water weed in India is Eichhornia crassipes.
It is an aquatic plant native to South America, naturalized throughout the world, and often invasive outside its native range.
Water hyacinth is a free-floating perennial aquatic plant native to tropical and subtropical South America. With broad, thick, glossy, ovate leaves, water hyacinth may rise above the surface of the water as much as 1 m in height.
It is known as the "terror of Bengal" due to its invasive growth tendencies.

Gas is a renewable source of energy.
Renewable gas is biogas that has been upgraded and placed in the conventional natural gas system. It's produced from multiple sources, including livestock waste, landfills, wastewater sludge, food waste and other organic waste operations.

Silent Valley is concerned with conservation of forests.
Silent Valley National Park is a national park in Kerala, India. It is located in the Nilgiri hills and has a core area of 89.52 km². It is surrounded by a buffer zone of 148 km². This national park has some rare species of flora and fauna.
Territorial forests located around the national park have been subject to a working plan to accomplish revenue-oriented objectives such as extraction of bamboo and reed which affect the long-term conservation of the park.

Chief source of water and soil pollution is mining, thermal power plant and agroindustry.
Water pollution is the contamination of water sources by substances that make the water unusable for drinking, cooking, cleaning, swimming, and other activities.
Soil pollution as a part of land degradation is caused by the presence of xenobiotic chemicals or other alterations in the natural soil environment. It is typically caused by industrial activity, agricultural chemicals or improper disposal of waste.

Combustion of candles is a exothermic change.
When you light a candle, the heat of the flame melts the wax near the wick. This liquid wax is then drawn up the wick by capillary action. The heat of the flame vaporizes the liquid wax, and starts to break down the hydrocarbons into molecules of hydrogen and carbon.
Exothermic change is a thermodynamic process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light.

Beijerinck (1888) discovered Bacillus radicicola and Nodule formation in legumes.
Prof. M. W. Beijerinck is most famous as a soil microbiologist. It was Beijerinck who, in 1888, isolated Bacillus radicicola, the nodule organism of leguminous plants. His studies, important to soil science, on the sulphur bacteria, azatobacter, and on denitrification came at about the same time as his work on the tobacco-mosaic virus.

Environment is warmed up by Water vapour, Dust particles and CO₂.
A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (H₂O), carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O) and ozone (O₃).
At current greenhouse gas emission rates, temperatures could increase by 2°C, which the United Nations' Intergovernmental Panel on Climate Change (IPCC) says is the upper limit to avoid "dangerous" levels, by 2050.

Tendu/Kendu leaves used as wrappers for 'bidis' are taken from Diospyros exsupta.
Diospyros melanoxylon is a species of flowering tree in the family Ebenaceae native to India and Sri Lanka; it has a hard, dry bark.
The leaves can be wrapped around tobacco to create the Indian beedi, which has outsold conventional cigarettes in India.
The leaf of the tree contains valuable flavones. The pentacyclic triterpenes found in the leaves possess antimicrobial properties, while the bark shows antihyperglycemic activity.