A. Sedimentary rocks
B. Secondary rocks
C. Aqueous rocks
D. All of the above
Submitted by: Shafiq Rehman
Correct Answer: All of the above ✔
Last Updated: March 25, 2021
Related MCQs
- Igneous rocks are called:__________?
- The soil air contains a number of gases __________ & water vapours:
- Soil is a variable mixture of Major components:
- Soil-forming minerals occurring in rocks do not contain any water, they undergo __________ when exposed to humid conditions & break down as in chemical weathering process:
- Volcanic soils:
- Inceptisols:__________?
- New soils, no or little profile development:
- The soil quality is always deteriorated by:_________?
- Organic matter decomposes rapidly in Pakistani soils because of __________ conditions, that is why our soils generally have < 1% organic matter:
- The capacity of a soil to function on sustained basis promoting plant & animal health:
- The available soil is being polluted quickly by __________ wastes.
- __________ , considered a perfect soil, is a mixture of silt, clay and sand:
- The unit of a scale used to measure the level of acidity or alkalinity of chemicals is called:
- The following types of check dams have been tried in Pakistan:
- Any tillage and planting system that maintains at least 30% of the soil surface covered by residue after planting for the purpose of reducing soil erosion by water:
- Surface removal of ice or snow from a glacier or snowfield by melting, sublimation, and/ or calving:
- Inorganic constituents vary in size from fine clay particles _ mm to large _________ mm gravel and rock:
- Organic Soils are classified as and are also known as __________ soils:
- The suitable species for reclamation of saline & sodic soil is:__________?
- Erosion permitting and erosion resisting crops grow alternatively at right angle to the slope of the land is called as:_________?
- The most suitable species for reclamation of sandy soils is:_________?
- The lands which are rich in soluble salts and exchangeable sodium:
- The practice of managing rows of closely planted woody plants with annual crops planted in alleys in between hedges is called as:________?
- In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of__________?
- Pakistan being predominantly an arid and semiarid country, In addition to agricultural productivity losses and increasing poverty, desertification results in significant reductions in _________?
- World biodiversity day is celebrated on:_________?
- Water-erosion can be reduced / controlled by:__________?
- Soil erosion Occurs mainly in:_________?
- Sustainable technologies to improve soil fertility and physical condition:
- In Pakistan, approximately __________ mha of irrigated land is affected by salinization:
- Sustainable Technologies to Control Water-Logging:
- According to the Soil survey of Pakistan, the total waterlogged summer-rain area in the country is:_________?
- International day of forest is celebrated on__________?
- Tunnel erosion is the form of:__________?
- International Union of Forest Research Organization (IUFRO) is located:
- Which of the following techniques is/are used for the soil fertility evaluation?
- _________refers to the increase in density of a soil as a result of applied load or pressure?
- The evolution of new species is known as__________?
- Which chemical used to prevent evaporation from surface of water in water bodies?
- Causes of Soil are:__________?
- Principles of soil conservation does not include:
- Following are types if erosion:
- Small rivulets or finger like channels formed on the surface of earth by action of water, these channels are of small depth & can be leveled by tillage operations is:
- In Balochistan, deserts also exists in _________, which supoorts wind erosion excluding rocky mountains:
- Ca, Mg, S are called__________?
- Fe, Zn, Mn, Mo, Co, Ni, Cu, are also called __________:
- Soil erosion is __________ of soil from one place ti another place by natural agencies (wind & water):
- Fossils are found in__________type of rocks:
- “Soil” word derive from which language?
- Which one of the following clay mineral has the highest CEC?
- Nitrogen fixation is accomplished by:_________?