Que- Soap and detergents are the source of organic pollutants like:
a. Glycerol
b. Polyphosphates
c. Sulphonated hydrocarbons
d. All of these
Answer- All of these
Explanation- Soaps and detergent are the sources of both organic and inorganic pollutants. These pollutants harm the water bodies badly. The correct answer is D.
Que- Black Buck is a
a. Goat
b. Deer
c. Butterfly
d. Bird
Answer- Deer
Explanation- Black Buck is a deer.
Que- The Native Place of Redwood trees?
a. Australia
b. Amazon
c. California
d. Thailand
Answer- California
Explanation- Though they once thrived throughout much of the Northern Hemisphere, today redwoods are only found on the coast from central California through southern Oregon. They do not live more than 50 miles inland, and are usually found in long belts, rather than small groves.
Que- Which of the following is not considered a temperature scale?
a. Fahrenheit
b. Kelvin
c. Calorie
d. Celsius
Answer- Calorie
Explanation- Calorie is not considered a temperature scale.
Que- Evaporation is a _________ process.
a. Cooling
b. Heating
c. Can't tell - it depends on the temperature
d. Both a and c
Answer- Cooling
Explanation- Evaporation is a cooling process.
Que- This holds a planet's atmosphere close to its surface:
a. Radiation
b. Gravity
c. Cloud cover
d. Moisture
Answer- Gravity
Explanation- Our atmosphere is a mixture of gases that surround Earth. It is kept in place by the pull of Earth's gravity. If Earth was a much smaller planet, like Mercury or Pluto, its gravity would be to weak to hold a large atmosphere.
Que- During the afternoon the greatest temperature difference between the surface air and the air several meters above occurs on a:
a. Clear, calm afternoon
b. Clear, windy afternoon
c. Cloudy, calm afternoon
d. Cloudy, windy afternoon
Answer- Clear, calm afternoon
Explanation- During the afternoon, the greatest temperature difference between the surface air and the air several meters above the ground occurs on a:clear, calm day.
Que- Ideal conditions for a strong radiation inversion:
a. Clear, calm, dry, winter night
b. Clear, calm, moist, summer night
c. Cloudy, calm, moist, winter night
d. Cloudy, windy, moist, summer night
Answer- Clear, calm, dry, winter night
Explanation- Ideal conditions for a strong radiation inversion: Clear, calm, dry, winter night.
Que- Example of primary pollutant
a. SO2
b. NO2
c. CO
d. hydrocarbons
Answer- hydrocarbons
Explanation- No explanation is given for this question
Que- In a photochemical smog, which gas is an eye and mucous membrane irritant?
a. SO2
b. O3
c. CO2
d. N2O
Answer- N2O
Explanation- Nitrogen oxides are irritating to the eyes, skin, nose, mucous membranes and respiratory tract.
Que- Approximately, 50% of total world species are present on
a. Tropical rain forest
b. Temperate rain forest
c. Temperate deciduous forest
d. Coral reefs
Answer- Tropical rain forest
Explanation- Approximately, 50% of total world species are present on tropical rain forest.
Que- Which one of the following ecosystem type has the highest annual net primary productivity?
a. Tropical deciduous forest
b. Tropical rain forest
c. Temperate deciduous forest
d. Temperate evergreen forest
Answer- Tropical rain forest
Explanation- The tropical rainforest has highest annual net primary productivity (9000 K cal / m2 / yr).
Que- The amount of force exerted over an area of surface is called:
a. Density
b. Weight
c. Temperature
d. Pressure
Answer- Pressure
Explanation- Pressure is defined as the force exerted on a surface divided by the area over which that force acts.
Que- Sedimentation is a
a. Primary water treatment
b. Secondary water treatment
c. Tertiary water treatment
d. Final process
Answer- Primary water treatment
Explanation- Sedimentation is the tendency for particles in suspension to settle out of the fluid in which they are entrained and come to rest against a barrier. This is due to their motion through the fluid in response to the forces acting on them: these forces can be due to gravity, centrifugal acceleration, or electromagnetism.
Que- Black lung disease is associated with
a. Farmers
b. Coal miners
c. Textile industry workers
d. Sweepers
Answer- Coal miners
Explanation- Coal workers' pneumoconiosis (CWP), also known as black lung disease or black lung, is caused by long-term exposure to coal dust. It is common in coal miners and others who work with coal. It is similar to both silicosis from inhaling silica dust and asbestos dust.