UGC NET Environmental Science Mock - 2 - UGC NET MCQ

Surface ozone is the air pollutant in urban areas which irritates eyes and also respiratory tract of human beings. Surface ozone is formed when nitrogen oxides, carbon monoxide react in the atmosphere in the presence of sunlight.

Statement 2 is correct as increasing ocean acidification will significantly reduce ability of reef-building corals to produce their skeletons. Statement 1 an3 are correct as calcareous phytoplankton with larva will get damaged with their shells weakened, hence correct option is D..

Statement 1 is correct.

Statement 2 is incorrect as for Biomagnification to occur, pollutant has to be Long lived, Mobile, Soluble in Fat and biologically active.

If it is short-lived, it will be broken down before it can become dangerous. If it is not mobile, it will get stick to one place only. If it is soluble in water, it will be washed away in excretion.

So in order to retain it must be fat soluble

Hydrogen (H₂) is the fuel of energy that is the most environment friendly. Many researchers are working on hydrogen operated vehicles. Hydrogen might be used as an alternative fuel for different vehicles.

Sustainable development goals have specific targets to be achieved by the year 2030. The Sustainable development goals cover some of the important issues like poverty, health, education, water sanitation etc.

Silent valley is a tropical evergreen forest in Kerala (Palghat) declared as national Reserve Forest. It is called silent valley because there is no noise in the forest during night, even that of cicadas, as they are not found there.

Correct order is:

Rivers(0.004%)< Atmospheric vapour(0.049%)< Soil moisture(0.299%)< Lakes(0.98%)< Groundwater(14.1%)< Glaciers(54.56%)

• Toxicity 
• Reactivity
• Ignitibility

Hence, The correct answer is D.

Flow in water treatment plant, Q = 8 MLD

Alum dose per litre = 20 mg

Total quantity of alum used
=160 kg

Hence, The correct answer is B.

By statistical and dynamic rules

Hence, The correct answer is C.

Research is working in a scientific way to search for truth of any problem.

Hence, The correct answer is C.

When both partners/components are affected negatively, the nature of the interaction is competition. Competition is an interaction between organisms or species in which the fitness of one is lowered by the presence of another.

Hence option B is correct.

The Economic and Social Council of the United Nations (ECOSOC) which is one of the principal organisation of United Nations, established the United Nations Forum on Forests (UNFF) in October 2000.

Hence option B is correct.

The Biodiversity Target was adopted in the year 2002 during the sixth Conference of the Parties to the Convention on Biological Diversity.

Hence option A is correct.

If you want to keep an object cool while exposed to direct sunlight, wrap it in aluminum foil with the shiny side facing outward.

Hence option D is the correct answer.

Water warms and cools much more slowly than land because it takes more heat to raise the temperature of a given amount of soil 1^oC than it does to raise the temperature of water 1^oC.

Hence option D is the correct answer.

All the above contribute to displacement.

Hence option D is the correct answer.

Chilika, the largest brackish water lake in Asia. Its is home to many migratory birds in the winters.

Hence option A is the correct answer.

Crop rotation enhances soil fertility.

Hence option A is the correct answer

Cold deserts are places which have hot summers but the winters are extremely cold. Generally, such areas occur in high, flat areas, called plateaus, or mountainous areas in temperate regions of the world. In India, such areas occur in Ladakh and Spiti. Antarctica is the largest cold desert of the earth.

Hence option A is the correct answer.

Olive Ridley is a marine tortoise which shows the unique phenomenon "arribada".

Hence option A is the correct answer.

Abundant source of inonazite sands are found on the sea shores of Kerala.

Hence. The correct answer is D.

Bioindicator is an organism used to gauge the quality of an ecosystem.

A bioindicator is a living organism that gives us an idea of the health of an ecosystem. Some organisms are very sensitive to pollution in their environment, so if pollutants are present, the organism may change its morphology, physiology or behaviour or it could even die.

Herpetology is the branch of zoology which deals with the study of reptiles and amphibians such as snakes, turtles, and iguanas. It deals with their behaviors, geographic ranges, physiologies, development, genetics, and more.

Hence. The correct answer is C.

The atmosphere's average temperature would change.

Hence. The correct answer is A.

The first teak plantations were raised in Nilambur in 1842 by the British. H V Conolly, the Malabar District Collector during the British rule, was instrumental in planting teak in the entire Nilambur area, with the help of Chathu Menon, a forest officer. Now the plantation is named after Conolly.

Hence. The correct answer is B.

Herbivores are also known as plant eating animals or primary consumers.

Hence. The correct answer is B.

Temperature readings are taken in instrument shelters more than 5 feet above the ground.

Hence. The correct answer is A.

All the statements are correct regarding ecological succession except that it is a random process.

Hence. The correct answer is A.