Que- Pollutants that are introduced into the environment by human activity are called as
a. qualitative pollutants
b. quantitative pollutants
c. anthropogenic pollutants
d. all of these
Answer- anthropogenic pollutants
Explanation- Anthropogenic pollution is not new—humans have contributed to the environmental burden since they learned to control fire and smelt metals. However, the nature and distribution of contaminants in the environment has changed in recent history as new compounds have been created
Que- When clouds are viewed near the horizon, the individual cloud elements usually:
a. Appear closer together than is actually the case
b. Appear farther apart than is actually the case
c. Appear lighter in color than is actually the case
d. Appear to have more vertical development than is actually the case
Answer- Appear closer together than is actually the case
Explanation- When clouds are viewed near the horizon, the individual cloud elements usually appear closer together than is actually the case.
Que- Which sea is referred to as an oceanic desert?
a. Red Sea
b. Sargasso Sea
c. Arabian Sea
d. Sea of Japan
Answer- Sargasso Sea
Explanation- Because of its stillness and seaweeds on the surface, the Sargasso Sea is a fascinating ECOSYSTEM. Marine biologists have called it a biological desert, largely devoid of plankton, a basic food supply for fish.
Que- At night, low clouds:
a. Enhance the atmospheric greenhouse effect
b. Weaken the atmospheric greenhouse effect
c. Are often caused by the atmospheric greenhouse effect
d. Have no effect on the atmospheric greenhouse effect
Answer- Enhance the atmospheric greenhouse effect
Explanation- At night the reflection effect is zero so the greenhouse effect and reflection of thermal radiation dominate and the low thick clouds have a warming effect.The greenhouse effect could at most return 50 percent of the outgoing radiation back to the Earth
Que- Ozone layer is present in
a. Troposphere
b. Stratosphere
c. Mesosphere
d. Ionosphere
Answer- Stratosphere
Explanation- The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9.3 to 21.7 mi) above Earth, although its thickness varies seasonally and geographically. The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson.
Que- Ozone Umbrella is located in which layer of atmosphere
a. Troposphere
b. Stratosphere
c. Mesosphere
d. Ionosphere
Answer- Stratosphere
Explanation- The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9.3 to 21.7 mi) above Earth, although its thickness varies seasonally and geographically.
Que- One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as
a. N2O and CO2
b. CFCs and N2O
c. Methane and CO2
d. Methane and CFCs
Answer- CFCs and N2O
Explanation- One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as CFCs and N2O.
Que- The cause of Bhopal disaster is
a. Methyl Alcohol
b. Methyl Carbonate
c. Methyl Isocyanate
d. Methyl Sulphate
Answer- Methyl Isocyanate
Explanation- The disaster happened because water entered a tank containing Methyl isocyanate. This caused a chemical reaction which resulted in the buildup of much Carbon dioxide, among other things.
Que- At which city might you be able to observe cirrus clouds at an altitude of 3,000 m (10,000 feet) above the surface?
a. Barrow, Alaska
b. Honolulu, Hawaii
c. Miami, Florida
d. Chicago, Illinois
Answer- Barrow, Alaska
Explanation- At Barrow, Alaska one would be able to observe cirrus clouds at an altitude of 3,000 m (10,000 feet) above the surface.
Que- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth's atmosphere?
a. Oxygen and nitrogen
b. Nitrogen and carbon dioxide
c. Ozone and oxygen
d. Water vapor and carbon dioxide
Answer- Water vapor and carbon dioxide
Explanation- Greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface, thus contributing to the greenhouse effect. Carbon dioxide, methane, and water vapour are the most important greenhouse gases.
Que- The combination of nitrogen oxides and hydrocarbons in the presence of the sunlight causes
a. Global warming
b. Smog
c. Ozone hole in the atmosphere
d. Acid rain
Answer- Smog
Explanation- The combination of nitrogen oxides and hydrocarbons in the presence of the sunlight causes smog.
Que- The Residential and Commercial wastes mainly consist of:
a. Food wastes
b. Card board
c. Packaging materials
d. None of the above
Answer- Packaging materials
Explanation- The Residential and Commercial wastes mainly consist of packaging materials.
Que- What is the only continent on earth where Giraffes live in the wild?
a. Africa
b. India
c. Pakisthan
d. Srilanka
Answer- Africa
Explanation- Africa is the only continent where Giraffes live the wild.
Que- Grassland of USA is referred to as
a. Prairies
b. Steppes
c. Pampas
d. Veldts
Answer- Prairies
Explanation- In the U.S., Grassland is referred as prairies. In South America, it is referred as pampas. In Central Eurasian, it is referred as steppes. In Africa, it is referred as savannas.
Que- The temperature at which water boils depends mainly on:
a. Air temperature
b. Relative humidity
c. Air pressure
d. Air density
Answer- Air pressure
Explanation- The temperature at which water boils depends mainly on air pressure.
Que- In a temperature inversion:
a. Air temperature increases with increasing height
b. Air temperature decreases with increasing height
c. Air temperature remains constant with increasing height
d. It is warmer at night than during the day
Answer- Air temperature increases with increasing height
Explanation- 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.)
Que- A term biotype means
a. all individuals having same phenotype
b. all individuals having same genotype
c. all individual with different phenotype
d. all individuals with different genotype
Answer- all individuals having same phenotype
Explanation- The organisms sharing a specified genotype also the genotype shared or its distinguishing peculiarity.
Que- Fatal degenerative lung disease caused by particulate asbestos is referred to as
a. asbestosis
b. asthma
c. allergy
d. sinusitis
Answer- asbestosis
Explanation- Asbestosis is long term inflammation and scarring of the lungs due to asbestos fibres.
Que- Radiations are harmful as it
a. causes skin cancer
b. causes anemia
c. alters body tissues
d. is unstable
Answer- causes skin cancer
Explanation- Radiation poisoning happens when a radioactive substance gives off particles that get into a person's body and cause harm. Different radioactive substances have different characteristics. They can harm and help people in different ways, and some are more dangerous than others.
Que- At the North Pole the sun will rise above the horizon on ____ and set below the horizon on ____.
a. June 22; September 23
b. September 23; December 22
c. March 21; September 23
d. June 22; December 22
Answer- March 21; September 23
Explanation- At the North Pole the sun will rise above the horizon on March 21and set below the horizon on September 23.
Que- World Water Day is celebrated on ___________
a. May 22
b. June 05
c. March 22
d. May 11
Answer- March 22
Explanation- World Water Day is held annually on 22 March as a means of focusing attention on the importance of freshwater and advocating for the sustainable management of freshwater resources. This Day is an opportunity to learn more about water related issues, be inspired to tell others and take action to make a difference.
Que- A pond, serves as a good example for a __________ water ecosystem.
a. fresh
b. brackish
c. marine
d. sea
Answer- fresh
Explanation- A pond, serves as a good example for a fresh water ecosystem.
Que- What is lentic habitat ?
a. Running water habitat
b. Standing or still water habitat
c. Marine habitat
d. None
Answer- Standing or still water habitat
Explanation- A lentic ecosystem entails a body of standing water, ranging from ditches, seeps, ponds, seasonal pools, basin marshes and lakes. Deeper waters, such as lakes, may have layers of ecosystems, influenced by light. Ponds, due to their having more light penetration, are able to support a diverse range of water plants.
Que- Minamata disease is caused by
a. Air Pollution
b. Water Pollution
c. Marine Pollution
d. All of these
Answer- Marine Pollution
Explanation- Minamata disease is caused by marine pollution.
Que- More solar radiation is received at the:
a. Earth
b. Top of the atmosphere
c. North and south poles
d. None of the above
Answer- Top of the atmosphere
Explanation- More solar radiation is received at the top of the atmosphere.