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151.

Which latitude belt best describes the middle latitudes?

Answer»

 30o to 50o



The middle LATITUDES (also called the mid-latitudes, SOMETIMES midlatitudes, or moderate latitudes) are a SPATIAL region on EARTH located between the latitudes 23°26'22" and 66°33'39" north, and 23°26'22" and 66°33'39" south.

152.

The green house gases, otherwise called radioactively active gases includes

Answer»

 All of these



All of these

153.

In a temperature inversion:

Answer»

 Air TEMPERATURE INCREASES with increasing HEIGHT



Temperature inversion, a REVERSAL of the normal behavior of temperature in the troposphere (the region of the atmosphere nearest the Earth's surface), in which a layer of cool air at the surface is overlain by a layer of warmer air. (Under normal CONDITIONS air temperature usually decreases with height.)

154.

Example for a physical pollutant

Answer»

 RADIATION



Example for a PHYSICAL POLLUTANT is radiation.

155.

The first oil well was drilled in the United States in

Answer»

 1859



On August 27, 1859, George Bissell and Edwin L. Drake MADE the FIRST SUCCESSFUL use of a drilling RIG on a well drilled especially to produce oil, at a site on Oil Creek near Titusville, Pennsylvania.

156.

"Earth provides enough to satisfy every man's need, but not for every man's greed" words by

Answer»

 Gandhiji



Mahatma Gandhi was WELL AWARE of such tendencies. Hence his advice to use the bounties of nature, but not with an ELEMENT of greed. He firmly believed that the 'Earth provides enough to satisfy EVERY man's need, but not for every man's greed.'

157.

Which of the following statements is/are correct?

Answer»

 All of these are CORRECT



All of these are correct.

158.

Which chemical was responsible for Bhopal gas tragedy?

Answer»

 Methyl ISOCYANATE



It happened at a Union CARBIDE SUBSIDIARY pesticide plant in the city of Bhopal, India. On the night of 2-3 December 1984, the plant released approximately 40 tonnes of toxic methyl isocyanate (MIC) gas, EXPOSING more than 500,000 people to toxic gases.

159.

The book silent spring was written by

Answer»

 Rachel Carson



On June 4, 1963, less than a YEAR after the CONTROVERSIAL environmental classic “Silent Spring” was published, its author, Rachel Carson, testified before a Senate subcommittee on pesticides. She was 56 and dying of breast cancer.

160.

Drinking of fluoride containing water results :

Answer»

 FLUOROSIS



Drinking of FLUORIDE CONTAINING WATER RESULTS to fluorosis.

161.

If the air temperature remains constant, evaporating water into the air will ____ the dew point and ____ the relative humidity.

Answer»

 INCREASE, increase



If the AIR temperature REMAINS constant, evaporating water into the air will increase the dew POINT and increase the RELATIVE humidity.

162.

Barnacles growing on the back of whale is an example for

Answer»

 commensalism



The BARNACLES passively FILTER FOOD, using tentacle-like cirri, as the host swims through the water. The arrangement is generally considered COMMENSAL as it is done at no cost or BENEFIT to the host.

163.

During the winter in the Northern Hemisphere, the "land of the midnight sun" would be found:

Answer»

 At high latitudes



During the winter in the NORTHERN Hemisphere, the "land of the midnight sun" WOULD be found: in high latitudes. During the winter solstice in the Northern Hemisphere, the day is less than 12 hours long and is INCREASING with each passing day.

164.

IUCN is also called as

Answer»

 World CONSERVATION Union



It CHANGED its NAME to the International Union for Conservation of NATURE and Natural Resources (IUCN) in 1956 and was also known as the World Conservation Union (IUCN) from 1990 to 2008. The IUCN is the world's oldest global environmental organization. Its headquarters are in Gland, SWITZERLAND.

165.

What is lotic habitat?

Answer»

 RUNNING water habitat



LOTIC refers to FLOWING water, from the Latin lotus, past participle of lavere, to wash. Lotic ecosystems can be contrasted with lentic ecosystems, which involve relatively still terrestrial WATERS such as LAKES and ponds. Together, these two fields form the more general study area of freshwater or aquatic ecology.

166.

Climate includes

Answer»

 All of these



Climate change is any systematic change in the long-term STATISTICS of climate variables such as temperature, precipitation, PRESSURE, or WIND sustained over several decades or LONGER.

167.

Black Buck is a

Answer»

 DEER



Black BUCK is a deer.

168.

Plantation produces around __________ percentage of industrial woods.

Answer»

 forty



Plantation PRODUCES AROUND forty percentage of INDUSTRIAL woods.

169.

Eutrophication results from

Answer»

 Agricultural and sewage water



Eutrophication most commonly arises from the oversupply of nutrients, most commonly as nitrogen or phosphorus, which leads to OVERGROWTH of plants and algae in aquatic ecosystems. After such organisms DIE, bacterial degradation of their biomass results in OXYGEN CONSUMPTION, thereby creating the state of hypoxia.

170.

In July, at middle latitudes in the Northern Hemisphere, the day is ____ long and is ____ with each passing day.

Answer»

 More than 12 hours; GETTING shorter



In July, at middle LATITUDES in the Northern Hemisphere, the DAY is more than 12 hours long and is getting shorter with each passing day.

171.

Mycorrhiza represents

Answer»

 Symbiotic association between a FUNGUS and roots of higher plants



A MYCORRHIZA is a symbiotic association between a GREEN plant and a fungus. The plant makes organic molecules such as SUGARS by photosynthesis and supplies them to the fungus, and the fungus supplies to the plant WATER and mineral nutrients, such as phosphorus, taken from the soil.

172.

Name the disease caused by mercury poisoning in Japan

Answer»

 Minamata DISEASE



Minamata disease, SOMETIMES referred to as Chisso-Minamata disease, is a neurological SYNDROME caused by severe mercury poisoning. Symptoms INCLUDE ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision and damage to hearing and speech.

173.

Fog that most often forms as warm rain falls into a cold layer of surface air is called:

Answer»

 Evaporation (mixing) fog



Freezing fog, which deposits RIME, is COMPOSED of droplets of supercooled water that freeze to SURFACES on contact.
Precipitation fog (or frontal fog) FORMS as precipitation falls into drier air below the cloud, the liquid droplets evaporate into water vapor.

174.

What is the name of the action plan for sustainable development in the Twenty first century framed in the Rio Declaration on Environment & Development (1992)?

Answer»

 Agenda 21



Agenda 21 is a non-binding action plan of the United Nations with regard to sustainable DEVELOPMENT. It is a product of the Earth SUMMIT (UN CONFERENCE on Environment and Development) held in Rio de Janeiro, Brazil, in 1992.

175.

Which of the following groups is absolutely essential functional component of the ecosystem?

Answer»

 Producers and DETRITIVORES



Producers and detritivores are ABSOLUTELY ESSENTIAL FUNCTIONAL COMPONENT of the ecosystem.

176.

The range of normal human hearing is in the range of

Answer»

 50Hz to 15000 HZ



The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual LOSS of sensitivity to higher frequencies with AGE is considered normal. Sensitivity ALSO varies with frequency, as shown by equal-loudness contours. Here, option C is correct.

177.

When the air temperature is below freezing, the saturation vapour pressure over water is .

Answer»

 Greater than the saturation VAPOUR pressure over ICE



Saturation vapour pressure increases with RISING temperature. Saturation vapour pressure just above LIQUID water is greater than that over ice. At temperatures below freezing it TAKES more vapour molecules to saturate air directly above water than it does to saturate air directly above ice.

178.

Which of the following is not a green house gas?

Answer»

 SF6



The principal greenhouse GASES (GHGs) are carbon dioxide (CO2), water vapour (H2O), NITROUS oxide (N2O), methane (CH4) and ozone (O3).

179.

Acid rain mainly result from

Answer»

 SULFUR dioxide



Acid rain is CAUSED by emissions of sulfur dioxide and nitrogen oxide, which react with the WATER molecules in the atmosphere to produce acids. ... Nitrogen OXIDES can also be produced naturally by lightning strikes, and sulfur dioxide is produced by volcanic eruptions.

180.

The first Environmental Law in India was enacted in

Answer»

 1950

181.

Ozone depletion is mostly caused by

Answer»

 CFCs



Ozone DEPLETION occurs when CHLOROFLUOROCARBONS (CFCS) and halons—gases FORMERLY found in AEROSOL spray cans and refrigerants—are released into the atmosphere.

182.

The term "Eco" implies

Answer»

 ENVIRONMENT



Eco is an ABBREVIATION for ecology, the system of relationships between LIVING things, and with their environment. Friendly implies beneficial, or at least not harmful. It should follow that the term eco-friendly, when added to services or PRODUCTS, indicates positive, or at least not harmful, EFFECTS on living things.

183.

Rain water harvesting is a major method implemented for_____________

Answer»

 Water Conservation



Rainwater harvesting has been a POPULAR method of obtaining water for AGRICULTURE and for drinking PURPOSES in rural homes. The legislation to promote rainwater harvesting was enacted through the URBAN Development Authority (Amendment) Act, No. 36 of 2007.

184.

What is the man-made greenhouse gas known as?

Answer»

 HFC



Many greenhouse GASES occur naturally in the atmosphere, such as carbon dioxide, METHANE, water vapor, and nitrous oxide, while others are synthetic. Those that are man-made INCLUDE the chlorofluorocarbons (CFCs), hydrofluorocarbons (HFCs) and Perfluorocarbons (PFCS), as well as sulfur hexafluoride (SF6).

185.

Which one is nature's cleaner?

Answer»

 Decomposers and Scavengers



Decomposers and scavengers are those which DECOMPOSES the waster organic matter and release ENERGY back in the environment. Hence, they are also CALLED as nature's cleaner. They are present in the apex of the pyramid. Thus, the correct answer is 'Decomposers and scavengers.

186.

Boron, Zinc and Manganese are usually referred to as

Answer»

 Micronutrients



Zinc, CHLORINE, Boron, MOLYBDENUM, Copper, Iron, MANGANESE, Cobalt and Nickel are called micro-nutrients. They are called so because they are found and needed by plants in very small amount relative to other nutrients and are LEAST likely to be limiting PLANT growth and healthy development.

187.

Animal dung is __________ waste.

Answer»

 Biodegradable



ANIMAL dung is biodegradable waste. Animal dung contains HYDROCARBONS, which can be broken down into SIMPLER organic MOLECULES, such as METHANE, hydrogen, water and oxygen.

188.

The density of water vapour in a given parcel of air is expressed by the:

Answer»

 Absolute humidity



The DENSITY of water VAPOUR in a GIVEN parcel of AIR is expressed by the Absolute humidity.

189.

The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the:

Answer»

 Higher WATER temperature in the Gulf of Mexico



The Gulf Coast STATES are more humid in SUMMER than the COASTAL areas of Southern California mainly because of the higher water temperature in the Gulf of Mexico.

190.

Which of the following determine the kind (wavelength) and amount of radiation that an object emits?

Answer»

 Temperature



Temperature DETERMINE the KIND (wavelength) and amount of RADIATION that an object EMITS.

191.

The indoor pollutant radon which is a radioactive gas causes

Answer»

 lung CANCER



The indoor POLLUTANT RADON which is a RADIOACTIVE gas CAUSES lung cancer.

192.

The largest annual ranges of temperatures are found:

Answer»

 At POLAR latitudes over land



The largest annual RANGES of TEMPERATURES are FOUND at polar latitudes over land.

193.

On a clear, calm, night, the ground and air above cool mainly by this process:

Answer»

 RADIATION



On a clear, calm, night, the GROUND and AIR above cool mainly by this PROCESS radiation.

194.

The crucial species that determine the ability of large number of other species is termed as _________ species.

Answer»

 Keystone



Within biological communities, some species may be IMPORTANT in DETERMINING the ability of large number of other species to persist in the community. It has a disproportionately large EFFECT on its environment relative to its abundance. These crucial species are known as key stone species.

195.

Blue whale is placed under

Answer»

 Endangered



The blue whale (Balaenoptera musculus) is a marine mammal belonging to the BALEEN whale suborder Mysticeti. Reaching a maximum confirmed length of 29.9 meters (98 feet) and weight of 173 tonnes (190 tons), it is the largest animal known to have ever existed. Blue whale is placed under endangered.

196.

What is Pedology?

Answer»

 STUDY of SOIL



PEDOLOGY is the study of soils in their natural ENVIRONMENT. It is one of two main branches of soil SCIENCE, the other being edaphology. Pedology deals with pedogenesis, soil morphology, and soil classification, while edaphology studies the way soils influence plants, fungi, and other living things.

197.

The study of minerals is called

Answer»

 mineralogy



Mineralogy is a subject of geology specializing in the SCIENTIFIC STUDY of the chemistry, crystal structure, and physical (including OPTICAL) properties of minerals and mineralized artifacts.

198.

Natural earthquakes are caused by __________

Answer»

 EARTH's CRUST



Natural EARTHQUAKES are CAUSED by earth's crust.

199.

Air pollution is likely to be most severe

Answer»

 near the CENTER of an ANTICYCLONE



Air pollution is LIKELY to be most SEVERE near the center of an anticyclone.

200.

_________ is mixed with petrol for being used in automobiles.

Answer»

 Ethanol



Ethanol is MIXED with PETROL for being USED in AUTOMOBILES.