Soil Science

Soil Science
Total salt affected soils of Pakistan are _______?
6.3 m ha
12.3 m ha
5.0 m ha
10.5 m ha
Author: rikazzz Comment
Soil Science
Which rock is harder _______?
Metamorphic
Igneous
Sedimentary
Sand stone
Author: rikazzz Comment
Soil Science
How much percentage of soils of Pakistan are deficient in P _______?
60
40-60
50-70
80-90
Author: rikazzz Comment
Soil Science
The inner shell of earth consists of _______?
Silicate
Fe
Mg
Silicate of Fe and Mg
Author: rikazzz Comment
Soil Science
While diluting acid always add _______?
Acid to water
Water to acid
Both of the above
None of these
Author: rikazzz Comment
Soil Science
Point of zero change means _______?
All are ionic bond
Zero charge at surface
All the covalent bonds
None of these
Author: rikazzz Comment
Soil Science
Rocks formed from compacted clay or mud are called _______?
Shale
Sand stone
Clay stone
None of these
Author: rikazzz Comment
Soil Science
Problem of erosion in Thal and Cholistan is due to _______?
Wind
Water
Fire
Atmosphere
Author: rikazzz Comment
Soil Science
Which mulch reduce soil temperature?
Polythene
Black polythene
White polythene
Both BandC
Author: rikazzz Comment
Soil Science
Extraction of humic substance can be done by _______?
NaOH
NH4OH
NH4Cl
None of these
Author: rikazzz Comment

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