A. NaHCO3
B. Na2CO3
C. MgSO4
Both a & b
Correct Answer: Both a & b ✔
Last Updated: October 13, 2020
Related MCQs
- What are diatoms?
- Which of the following crop takes N in ammonical form:
- The virus infecting bacteria is called:_________?
- Fe is trivalent in which of the chemical compound:
- If the chlorophyll content in plant increases, the solar radiation transmitted:
- Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:
- The resistance of a soil at various moisture contents to mechanical stresses or manipulations:
- The process of deposition of soil materials in the lower layer is termed as:_________?
- The process of transformation of raw organic matter into humus:
- Biological Weathering involves:
- What is the concentration of pure water?
- Roots usually occupy :__________?
- Which of the following fertilizers show maximum residual acidity with the continuous soil application:
- Availability of Zn is higher to crops in:_________?
- The nutrient element silicon (Si) is:_________?
- The term rhizosphere was coined by:__________?
- Most abundant organic compound in nature?
- Which one of the following techniques is used for assessing available P in soil and does not include growing plants:
- According to FCO, the maximum permissible total N content in the form of urea in DAP should be:_________?
- The seventieth element included in the list of essential nutrient element is:__________?
- The albedo of the earth is:__________?
- The configuration of a surface and the relations among its man-made and natural features is called:________?
- Being a soil scientist, do you know which is the popular book of soil science of Nyle.C.brady, 14th edition available in markets:
- The indicator used for the the estimation of the organic matter or organic carbon is;_________?
- Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?
- Which of the following are secondary minerals:
- C:N ratio of microorganism:
- An intrazonal group of dark calcareous soils high in clay and having mainly montmorillonitic type clay are called as:________?
- Sulphur is an essential component of:__________?
- The water diffusivity has the units of:__________?
- Micas have isomorphous substitution:__________?
- The soils most prone to structural crusts are those which are higher in_________?
- A set of soils with same parent material, topography, climate and biota but different age is called_________?
- The Tree sends down roots from its branches to the soil is known as:__________?
- Rhizosphere is:
- The tree sends down roots from its branches to the soil is know as:_______?
- Which mulch reduce soil temperature?
- Humic acid is soluble in__________?
- In flood rice, snail feed on bacteria called__________?
- Which bacteria convert nitrite to nitrate__________?
- Examples of macrobiota are__________?
- Part of soil which is in contact with root surface is called__________?
- Point of zero change means__________?
- The most abundant metal in the earth’s crust and toxic to plants in low concentration is__________?
- The salinity can be reduced by the application of__________?
- Soil moisture and ET losses are__________?
- Particular matter consists of__________?
- Nitrogen gases are involved in__________?
- A treeless artic plain is called as__________?
- Biochemical reduction of nitrate to nitrite or gaseous nitrogen is called __________?
- While diluting acid always add__________?