A. Acids
B. Alkalies
C. Oxygen
D. Carbon dioxide
Related Mcqs:
- The biological weathering commonly brought about by:
A. Algae
B. Bacteria
C. Fungi
D. Lichens - The processes involved in the chemical weathering are:
A. Carbonation and oxidation
B. Hydrolysis and chelation
C. Hydrolysis and reduction
D. All of these - In the phosphorus cycle, weathering makes phosphate available first to:
A. Decomposers
B. Consumers
C. Producers
D. All the above - Among the plants listed, point out one that does not fit into biological group represented by other plants
A. Euphorbia
B. Acacia
C. Vallisneria
D. Aloe - Maintenance of Biological Diversity is:
A. In-situ conservation
B. Ex-situ conservation
C. Why conserve biological diversity
D. All of the above - Other material values of biological diversity are:
A. Many natural or semi-natural ecosystems
B. Some of which may be high biological diversity, are of considerable benefit to man
C. To role of forests in watershed regulation and stabilization of soils in erosion-prone areas
D. All of the above - Biological Oxygen Demand (BOD) is a measure of:
A. Industrial wastes poured into water bodies
B. Extent to which water is polluted with organic compounds
C. Amount of carbon monoxide inseparably combined with haemoglobin
D. Amount of oxygen needed by green plants during night - Biological control component is central to advanced agriculture production. Which of the following is used as a third generation pesticide?
A. Pathogens
B. Pheromones
C. Insect repellant
D. Insect hormone analogue - The maximum biological magnification of DDT through food web is seen in:
A. Algae
B. Bacteria
C. Higher plants
D. Man - Biological treatment of water pollution is done with the help of:
A. Lichens
B. Fungi
C. Phytoplanktons
D. None of the above
The correct answer to the question: "The biological weathering occurs due to the action of:" is "Acids ".
