Natural Resources

Which of the following factor does not influence the movement of air?
1. Rotation of earth
2. Topography over which the wind passes
3. Vapourisation and condensation of water vapours
4. Atmosphere of earth
Which of the following planet have an atmosphere?
1. Earth
2. Venus
3. Mars
4. All of these
The major component of the atmosphere in Venus and Mars planet is-
1. He
2. $N_{2}$
3. $O_{2}$
4. $C O_{2}$
The two forms of oxygen found in the atmosphere are-
1. Ozone & Oxygen
2. Water & Ozone
3. Water & Carbon-dioxide
4. Water & Oxygen
Name two biologically important compounds that contain both oxygen and nitrogen:
1. Fats, Carbohydrate
2. Protein, Carbohydrate
3. Carbohydrate, Nucleic acid
4. Protein, Nucleic acid
If there were no atmosphere surrounding the earth, then the temperature of the earth will-
1. Increases
2. Decreases
3. Increases during day decreases during night
4. Remains unaffected
Where is the major part of fresh water hound up?
1. Ice caps
2. Neither Ice caps nor Glacier
3. Glacier
4. Both Ice caps and Glacier
Rise in temperature of water due to addition of hot water into it is known as:
1. Thermal pollution
2. Water pollution
3. Soil pollution
4. Air pollution
Percentage of total water found as fresh water is:
1. 32%
2. 2.5%
3. 46%
4. 16%
Which of the following has the smallest soil particles?
1. Clay
2. Sand
3. Loam
4. Slit
Soil erosion can be prevented by:
1. Wind screen alone
2. Checking movements of animals
3. Restricted human activity
4. Good plant cover
Wind causes weathering of rocks through:
1. Mechanical forces
2. Abrasion
3. Chemical changes
4. Frost action
The kind of soil water most useful to plants is:
1. Distilled water
2. Hygroscopic
3. Capillary water
4. Gravitational water
Which of the following factors promote soil erosion?
1. Tillage, scraping and falling of tree
2. Falling of tree
3. Clean tilling
4. Scraping
Top soil contains-
1. Humus, living organisms & plants
2. Humus & living organisms
3. Humus, living organisms & soil particles
4. Humus & soil particles
Rainfall patterns depend on the:
1. Rotation of earth
2. Prevailing wind pattern
3. Humidity
4. All of these
Formula of Ozone is:
1. O
2. $O_{2}$
3. $O_{3}$
4. None of these
In nutrient cycle, minerals tend to be dispersed through:
1. Convection
2. Evaporation
3. Surface and sub-surface run off
4. Assimilation
Percentage composition of $O_{2}$ in air is:
1. 12.5%
2. 52%
3. 78%
4. 21%
Green plants convert carbon dioxide into glucose in the presence of:
1. Sunlight
2. Water
3. Oxygen
4. All of these
What would happen, if all the oxygen present in the environment is converted to ozone?
1. We will be protected more
2. It will become poisonous and kill all living forms
3. Ozone is not stable, hence it will be toxic
4. It will allow harmful sun radiations to reach earth and damage many life forms
When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of nitrogen?
1. It moves along with oxygen into the cells
2. It comes out with the carbon dioxide during exhalation
3. It is absorbed only by the nasal cells
4. Nitrogen concentration is already more in the cells, so itis not at all absorbed
You must have observed that during the winters sometimesit becomes quite difficult to see even the objects short distance apart. This low visibility during the cold weather is due to:
1. Formation of fossil fuels
2. Unburnt carbon particles of hydrocarbons suspended in air
3. Lack of adequate power supply
4. None of these
The ‘water pollution’ can be defined in several ways. Which of the following statements does not give the correct definition?
1. The addition of the undesirable substances to water bodies
2. The removal of the desirable substances from water bodies
3. A change in pressure of the water bodies
4. A change in temperature of the water bodies
The amount of nitrogen in the atmosphere is maintained by a biological cycle which involves two processes, first is to withdraw nitrogen from the atmosphere and secondly to add the same to atmosphere.

Guess the names of these two respective processes:
1. Nitrogen fixation and nitrification
2. Nitrification and denitrification
3. Nitrogen fixation and denitrification
4. Nitrification and nitrogen fixation
Aquatic organisms are used to a certain range of temperature in the water bodies where they live. A sudden marked change in this temperature can affect:

i. Breeding of animals

ii. Growth of the aquatic plants

iii. Process of digestion in animals

iv. Availability of nutrients
1. (i) and (ii)
2. (i) and (iv)
3. Only (ii)
4. (ii) and (iii)
Presence of the fertilizers and sewage in polluted water provides a lot of nitrogen, causing excessive growth of algae which subsequently reduces the amount of dissolved oxygen in water.Can you name this process of reduction of dissolved oxygen due to the excess growth of algae?
1. Biomagnifications
2. Eutrophication
3. Algal bloom
4. Decomposition
A cool breeze after a hot day brings all of us considerable relief. This breeze is actually the moving air. What is the basic process that causes this movement of air?
1. Pressure difference between the air of two regions
2. Moving leaves of the plants
3. Temperature difference between the two regions
4. Striking of air with the mountains
If the carbon dioxide content in the atmosphere is increased then which one of the following would not get affected?
1. Amount of the heat retained by the environment
2. Process of photosynthesis in plants
3. Global warming
4. Existence of desert plants
Following is the diagram showing the natural Ecosystem comprising both of abiotic as well as biotic components.

The Biotic components of an ecosystem consist of:
1. Producers
2. Consumers
3. Decomposers
4. All of these

Natural Resources

Quiz