Soil Science - Study Mode

[#416] Which of the following the first phase of water erosion?
Correct Answer

(B) Splash erosion

Explanation

Solution: Splash erosion or raindrop erosion among the following is the first phase of water erosion. It occurs when raindrops hit barren land. The explosive impact breaks up soil aggregates so that individual soil particles are ‘splashed’ onto the soil surface. The erosion process includes three primary stages that are detachment, transport and deposition.

[#417] Major deposits of gypsum are found in
Correct Answer

(A) Rajasthan

Explanation

Solution: Gypsum is an important amendment to the problem of alkaline soils widely occurring in the state of Rajasthan . Gypsum is a soft sulphate mineral composed of calcium dehydrate. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk. Gypsum is a common mineral, with thick and extensive sedimentary rocks.

[#418] Petrography means
Correct Answer

(B) Description of rocks

Explanation

Solution: Petrography means the description of rocks. It is the branch of science with the composition and properties of rocks. The person who studies petrography is called a petrographer. The classification of rocks is based on the information acquired during the petrographic analysis.

[#419] Which one is the most prominent member of Mica group?
Correct Answer

(A) Muscovite

Explanation

Solution: Muscovite is one of the most prominent members of the Mica group. It is a common mica, isinglass, or potash mica, is a hydrated phyllosilicate mineral of aluminum and potassium with the formula KAl 2 (AlSi 3 O 10 )(F, OH) 2 or (KF) 2 (Al 2 O 3 ) 3 (SiO 2 ) 6 (H 2 O). It is the most common mica, found in granites, pegmatites, gneisses and schists, and as a contact metamorphic rock.

[#420] Which one is right, according to Biomass in soil?
Correct Answer

(B) Fungi > actinomycetis > bacteria

Explanation

Solution: According to Biomass in soil, Fungi > actinomycetes > bacteria is the correct sequence as per the presence of living organisms in the biomass. Biomass is organic, meaning it is made of material that comes from living organisms, such as plants and animals. It is a plant-based material used as fuel to produce heat or electricity.