RPSC Rajasthan AARO Agricultural Chemistry 2022 Solved Paper (English) — Agri Master Mind
In which style is the predominance of bright yellow colour and lacquer red colour seen? (RJ AARO Agri Chemistry 2022)
- Marwar style
- Kishangarh style
- Mewar style
- Hadoti style
Which river flows into the Arabian Sea? (RJ AARO Agri Chemistry 2022)
- Chambal River
- Banas River
- Luni River
- Gambhiri River
On the confluence of which rivers is the Gagron Fort situated? (RJ AARO Agri Chemistry 2022)
- Kalisindh and Chambal
- Ahu and Kalisindh
- Chambal and Ahu
- Ahu and Nimaj
Rangmahal is located at - (RJ AARO Agri Chemistry 2022)
- Shri Ganganagar
- Bikaner
- Churu
- Hanumangarh
Which districts does the Bhorat plateau constitute? (RJ AARO Agri Chemistry 2022)
- Between Kumbhalgarh and Gogunda
- Sirohi, Jalore district
- Ajmer, Jaipur district
- Ganganagar, Sirohi district
Marwar Youth League was established in: (RJ AARO Agri Chemistry 2022)
- A.D.
- A.D.
- A.D.
- A.D.
The prominent saint of Mewat is: (RJ AARO Agri Chemistry 2022)
- Haridas
- Sundar Das
- Laldas
- Nagaridas
The instrument of Pabuji's Bhopas is: (RJ AARO Agri Chemistry 2022)
- Morchang
- Algoja
- Khartal
- Ravan Hatha
The author of 'Ranmall Chhand' is: (RJ AARO Agri Chemistry 2022)
- Narpati Nalha
- Shridhar Vyas
- Padmanabh
- Sundar Das
Which of the following was not in the Matsya Union at the integration of Rajasthan? (RJ AARO Agri Chemistry 2022)
- Alwar
- Dholpur
- Karoli
- Sawai Madhopur
Bhimji's Dungari is in: (RJ AARO Agri Chemistry 2022)
- Chittorgarh
- Udaipur
- Bhilwara
- Bairath
When and how many days is the Paryushan festival celebrated by Shwetambar Jains? (RJ AARO Agri Chemistry 2022)
- Eight days of Shravan
- Eight days of Bhadrapad
- Seven days of Shravan
- Seven days of Bhadrapad
Where is the sub-tropical evergreen forest found in Rajasthan? (RJ AARO Agri Chemistry 2022)
- Kota
- Alwar
- Mt. Abu
- Whole of Aravalli mountain
The district in which sub-tropical hilly forests are found - (RJ AARO Agri Chemistry 2022)
- Alwar
- Sikar
- Ajmer
- Sirohi
Lehariya and Ghevar of Mehendi are drawn on the hand at: (RJ AARO Agri Chemistry 2022)
- Deepawali
- Holi
- Gangaur
- Teej
Extension of Banas Basin is in: (RJ AARO Agri Chemistry 2022)
- Tonk - Sawai Madhopur
- Sawai Madhopur - Jaipur
- Jaipur - Dausa
- Tonk - Jaipur
From the following where does the highest portion of Aravalli range lies? (RJ AARO Agri Chemistry 2022)
- Udaipur between Kumbhalgarh and Gogunda
- Hadoti plateau to Kota
- North Rajasthan
- Nahargarh to Jaigarh
Luni Basin is the part of which ecological region? (RJ AARO Agri Chemistry 2022)
- Aravalli mountainous ecosystem
- Desert ecosystem
- Hadoti plateau ecosystem
- Eastern plain ecosystem
Halguru title is owned by: (RJ AARO Agri Chemistry 2022)
- Mokal
- Lakha
- Chunda
- Kumbha
The singer and composer Manrang, the originator of Khayal style, belongs to which Gharana? (RJ AARO Agri Chemistry 2022)
- Jaipur Gharana
- Mewati Gharana
- Patiala Gharana
- Agra Gharana
Which districts come in Bwhw climatic region? (RJ AARO Agri Chemistry 2022)
- Jaipur, Dausa, Alwar
- Jaisalmer, Bikaner, Ganganagar
- Kota, Bundi, Jhalawar
- Nagaur, Pali, Jalore
Pachpadra lake is: (RJ AARO Agri Chemistry 2022)
- Saline water lake
- Sweet water lake
- Mixed water lake
- Special water lake
According to Thornthwaite, DA'w climate region includes the following districts - (RJ AARO Agri Chemistry 2022)
- Sirohi, Pali, Ajmer
- Ganganagar, Jaipur
- Bikaner, Churu
- Jodhpur, Kota
In which year did the soil survey begin in India? (RJ AARO Agri Chemistry 2022)
At which redox potential (Eh) is O2 changed to H2O form? (RJ AARO Agri Chemistry 2022)
- to 0.15
- to 0.32
- to 0.18
- to 0.22
Which of the nutrient is related to drought tolerance/luxury consumption? (RJ AARO Agri Chemistry 2022)
- N
- P
- K
- S
Which type of soils are covering the largest area in India? (RJ AARO Agri Chemistry 2022)
- Alluvial
- Laterite
- Desert
- Tarai
Which of the following crops is more sensitive to 'Biuret'? (RJ AARO Agri Chemistry 2022)
- Cereals
- Mango
- Citrus
- Cucumber
The red soil with basalt as parent material belongs to which of the soil classification order? (RJ AARO Agri Chemistry 2022)
- Vertisol
- Oxisol
- Ultisol
- Alfisol
Which of the following nutrient element is the vital component of genes and chromosomes? (RJ AARO Agri Chemistry 2022)
- N
- P
- K
- S
Wood ash is the rich source of which of the following nutrient? (RJ AARO Agri Chemistry 2022)
- N
- Zn
- K
- S
The first fertilizer produced in India is: (RJ AARO Agri Chemistry 2022)
- SSP
- DAP
- MOP
- Urea
The specific heat of quartz among the soil constituents is: (RJ AARO Agri Chemistry 2022)
- Lowest
- Highest
- Similar to other
- Variable
Name the fertilizer/nutrient that is totally imported: (RJ AARO Agri Chemistry 2022)
- N-fertilizer
- P-fertilizer
- K-fertilizer
- Zn-fertilizer
The 'Law of Maximum' concept was given by: (RJ AARO Agri Chemistry 2022)
- Mitscherlich
- Wallace & Wallace
- Liebig
- Henderson
The Central Soil Salinity Research Institute (CSSRI) is located at - (RJ AARO Agri Chemistry 2022)
- New Delhi
- Karnal
- Bangalore
- Hyderabad
The number of molecules of CO2 liberated for each molecule of O2 consumed is called - (RJ AARO Agri Chemistry 2022)
- Respiration
- Respiratory Quotient
- Photolysis
- Photosynthesis
If an irrigation water having EC 3 dsm⁻¹ and EC of drainage water is 8 dsm⁻¹, the Leaching Requirement (LR) will be: (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
The silicate clay mineral formed by recrystallization under intensive acid weathering conditions is: (RJ AARO Agri Chemistry 2022)
- Kaolinite
- Vermiculite
- Chlorite
- Fine grained micas
Basic slag is a by-product of the steel industry that contains a high concentration of which of the following nutrients? (RJ AARO Agri Chemistry 2022)
- P and Ca
- P and S
- Ca and S
- Mg and Ca
pH = -log [H+] where, H+ ion concentration is expressed in: (RJ AARO Agri Chemistry 2022)
- moles per liter (mol L⁻¹)
- milliequivalent per liter (meq L⁻¹)
- mg kg⁻¹
- cmol (P+) kg⁻¹
The sodium nitrate and basic slag develop which type of soil reaction? (RJ AARO Agri Chemistry 2022)
- Alkalinity
- Acidity
- Salinity
- Salinity alkalinity
The pF value of saturated soil and oven-dry soil respectively is: (RJ AARO Agri Chemistry 2022)
- and 14
- and 7
- and 14
- and 7
The iron and aluminum oxides and hydroxides are the __________ colloidal material. (RJ AARO Agri Chemistry 2022)
- Irreversible
- Reversible
- Variable
- Slowly reversible
The ideal CN ratio of cultivated soils is: (RJ AARO Agri Chemistry 2022)
- :01
- :01
- :01
- :01:00
Which of the following plant nutrients is a constituent of the cell wall and essential to maintain the stability of the cell membrane? (RJ AARO Agri Chemistry 2022)
- N
- P
- K
- Ca
Azolla have an algal symbiont in rice fields that is called: (RJ AARO Agri Chemistry 2022)
- Azotobacter
- Azospirillum
- Derxia
- Anabaena
The 17th essential plant nutrient is - (RJ AARO Agri Chemistry 2022)
- Molybdenum
- Chlorine
- Boron
- Nickel
Nutrient Index (NI) of a soil more than 2.5 indicates - (RJ AARO Agri Chemistry 2022)
- Low Nutrient Status
- Medium Nutrient Status
- High Nutrient Status
- Normal Nutrient Status
At field capacity, the moisture is held with a water potential of - (RJ AARO Agri Chemistry 2022)
- < 1/3 bar
- >= 1/3 bar
- < 15 bar
- > 15 bar
The sulfur (S) content in Single Super Phosphate (SSP) is - (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
India is using which taxonomical system for soil survey/classification? (RJ AARO Agri Chemistry 2022)
- IUSS
- USDA
- European system
- Australian system
In the presence of organic matter and iron oxide in the soil, the color of the soil appears like: (RJ AARO Agri Chemistry 2022)
- Brown color
- Yellow color
- Light color
- Red color
The laughing gas is: (RJ AARO Agri Chemistry 2022)
- N
- N₂O
- CH₄
- SO₂
The laboratory method for the determination of the textural class of soil was given by: (RJ AARO Agri Chemistry 2022)
- IUSS
- USDA
- BSI
- USPTO
The term 'Pollution' is derived from which language? (RJ AARO Agri Chemistry 2022)
- Italian
- French
- Greek
- Latin
The humic substance fraction of Soil Organic Matter (SOM) is - (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
The first Indian Remote Sensing Satellite (IRS-1A) was launched by the Indian Space Research Organization (ISRO) in - (RJ AARO Agri Chemistry 2022)
Which of the following crops contains maximum heavy metals grown on sewage effluents? (RJ AARO Agri Chemistry 2022)
- Spinach
- Cauliflower
- Wheat
- Maize
The 90-95 percent of plants are composed of which of the following nutrients? (RJ AARO Agri Chemistry 2022)
- NPK
- PKS
- CaMgK
- CHO
NBSSLUP classified India into how many agro-ecological divisions? (RJ AARO Agri Chemistry 2022)
Muriate of potash fertilizer is not suitable for Tobacco and potato because of - (RJ AARO Agri Chemistry 2022)
- SO₄⁻⁻ toxicity
- Cl⁻ toxicity
- Availability
- Costly fertilizer
Which of the following is the most dominating exchangeable ion? (RJ AARO Agri Chemistry 2022)
- K⁺
- Ca²⁺
- Na⁺
- H⁺
The irrigation water containing CO₃²⁻, HCO₃⁻, Ca²⁺, and Mg²⁺ ions 1, 4, 2.5, and 1.5 meq L⁻¹ respectively. Calculate the RSC of irrigation water. (RJ AARO Agri Chemistry 2022)
Blue baby syndrome is due to a higher concentration of - (RJ AARO Agri Chemistry 2022)
- Cadmium
- Lead
- Nickel
- Nitrate
The Bulk Density (BD) of a soil sample is 1.5 Mg m⁻³ and Particle Density (PD) is 2.5 Mg m⁻³. Calculate the porosity of this soil sample. (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
The Nitrogen (N) content of atmospheric air is: (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
The father of Soil Science and Agricultural Chemistry in India is: (RJ AARO Agri Chemistry 2022)
- J. W. Leather
- Adolph Frank
- Nikodem Caro
- Liebig
The amount (tons) of iron pyrite (FeS₂) equivalent to 1.0 tonne of gypsum - (RJ AARO Agri Chemistry 2022)
To find out the amount of phosphorus in soil by Bray's method, extraction is done from which of the following solutions? (RJ AARO Agri Chemistry 2022)
- DTPA
- NH₄F
- NaHCO₃
- NaOH
Soil protozoa are predators of which of the following microorganisms? (RJ AARO Agri Chemistry 2022)
- Bacteria
- Algae
- Fungi
- Actinomycetes
The surface area of vermiculite clay mineral is: (RJ AARO Agri Chemistry 2022)
- m²/g
- m²/g
- m²/g
- m²/g
Accumulation of which nutrients in soil along with leaching and runoff in water bodies causes 'Eutrophication'? (RJ AARO Agri Chemistry 2022)
- N and P
- N and S
- P and S
- S and K
Mica is an example of which of the following clay mineral? (RJ AARO Agri Chemistry 2022)
- Kaolinite
- Vermiculite
- Illite
- Montmorillonite
The 'Soil Health Card' scheme was launched in which year? (RJ AARO Agri Chemistry 2022)
Which of the following industrial effluents has high salinity and excessive concentration of sodium and carbonate ions? (RJ AARO Agri Chemistry 2022)
- Distillery
- Paper mill
- Tannery and Textile industry
- Metal industry
Which of the following nutrients acts as a regulator of K/Ca ratio in plants? (RJ AARO Agri Chemistry 2022)
- B
- Zn
- Fe
- Mn
Name the phosphorus (P) supplying mineral from the following: (RJ AARO Agri Chemistry 2022)
- Chlorite
- Apatite
- Smectite
- Muscovite (Mica)
In case of degraded alkali soils, there is a leaching of saline-sodic soils and the part of exchangeable Na is generally replaced by: (RJ AARO Agri Chemistry 2022)
- Ca++
- Mg++
- H+
- K+
Which of the following nutrients is known as the 'energy currency' within plants? (RJ AARO Agri Chemistry 2022)
- N
- P
- K
- S
The K constitutes about approx. how much percent of the earth's crust? (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
What was the main limitation of Stoke's Law on settling velocity of clay particle? (RJ AARO Agri Chemistry 2022)
- Particle shape
- Particle size
- Particle weight
- Particle colour
Which of the following element is bonded in the centre of prophyrin ring in the chlorophyll? (RJ AARO Agri Chemistry 2022)
- Mg
- Cu
- Zn
- Ni
The bacteria responsible for oxidizing the NH4+ to NO2- is: (RJ AARO Agri Chemistry 2022)
- Nitrosomonas
- Nitrobacter
- Pseudomonas
- Rhizobium
The critical limit of zinc for Indian soil is: (RJ AARO Agri Chemistry 2022)
- ppm
- ppm
- ppm
- ppm
The S content in gypsum is: (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
The available potassium is extracted from the soil by shaking the sample with: (RJ AARO Agri Chemistry 2022)
- Sodium acetate
- Morgan's reagent
- Acetic acid
- Sodium bicarbonate
Accumulation of 'low activity clays' is the characteristic of: (RJ AARO Agri Chemistry 2022)
- Albic horizon
- Oxic horizon
- Kandic horizon
- Cambic horizon
The electrical conductivity of 0.01 M KCl solution at 25°C is: (RJ AARO Agri Chemistry 2022)
- dsm^-1
- dsm^-1
- dsm^-1
- dsm^-1
The relation between osmotic pressure (atm or bars) and electrical conductivity for a salt mixture is: (RJ AARO Agri Chemistry 2022)
- EC = OP × 0.36
- OP = 0.36/EC
- OP = 0.36 × EC
- EC = 0.36/OP
The term 'Remote Sensing' was introduced in the USA in which period? (RJ AARO Agri Chemistry 2022)
- 's
- 's
- 's
- 's
Calculate the Leaching Requirement (LR) of irrigation water with EC = 3 dS m⁻¹ when the EC of drainage water is 8 dS m⁻¹. (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
Which of the following micro nutrient plays an important role in pollen germination and pollen tube growth? (RJ AARO Agri Chemistry 2022)
- Zn
- Cu
- B
- Mo
The available sulfur in soil is determined by which of the following method? (RJ AARO Agri Chemistry 2022)
- Olsen's
- Walkley and Black
- Chesnin and Yien
- Alkaline Permanganate
The highest N-fixing (kg N/ha/yr) legume in Indian soil among the following crops is: (RJ AARO Agri Chemistry 2022)
- Pigeon pea
- Groundnut
- Clover
- Alfa Alfa
The indicator plant for Permanent Wilting Point (PWP) is: (RJ AARO Agri Chemistry 2022)
- Pearl Millet
- Cluster bean
- Sunflower
- Maize
Marble is an example of which of the following altered conditions through heat and pressure? (RJ AARO Agri Chemistry 2022)
- Limestone
- Sandstone
- Shale
- Granite
The N: P₂O₅: K₂O content of poultry manure is: (RJ AARO Agri Chemistry 2022)
- : 1.0: 2.0
- : 0.2: 0.6
- : 2.5: 1.5
- : 0.3: 0.5
A neutron probe is used for the measurement of: (RJ AARO Agri Chemistry 2022)
- EC
- pH
- Water content
- SAR
The Nitrogen (N) content in Ammonium Nitrate (NH₄NO₃) is: (RJ AARO Agri Chemistry 2022)
- %
- %
- %
- %
The DTPA extractant concentration used for determining micronutrient content in soil is: (RJ AARO Agri Chemistry 2022)
- M
- M
- M
- M
Nitrogen (N) is not found in which of the following? (RJ AARO Agri Chemistry 2022)
- Lithosphere
- Hydrosphere
- Rhizosphere
- Atmosphere
Which of the following family tends to accumulate high nitrates when growing under high nitrate soil/water? (RJ AARO Agri Chemistry 2022)
- Chenopodiaceae
- Solanaceae
- Rosaceae
- Cucurbitaceae
Which of the following micronutrient is a component of urease enzyme? (RJ AARO Agri Chemistry 2022)
- Ni
- Fe
- Zn
- Cu
The dominant mineral of fine sand and coarse silt fraction of soil is: (RJ AARO Agri Chemistry 2022)
- Mica
- Feldspar
- Quartz
- Pyroxins
The "AKIOCHI" disease of rice is caused by the toxicity of which of the following? (RJ AARO Agri Chemistry 2022)
- CO₂
- NO₂
- Si
- H₂S
Which micronutrient imparts drought tolerance in plants? (RJ AARO Agri Chemistry 2022)
- B
- Mo
- Cl
- Zn
Which of the following P fertilizers supplies two secondary nutrients (Ca and S) in addition to P? (RJ AARO Agri Chemistry 2022)
- SSP
- Rock Phosphate
- DAP
- Ammonium Phosphate
In which year was urea synthesized in the laboratory by Wöhler? (RJ AARO Agri Chemistry 2022)
Calculate the moisture percentage from the given observations: weight of moist soil + box = 150g, weight of oven dry soil + box = 130g, weight of empty box = 40 g (RJ AARO Agri Chemistry 2022)
The size of coarse pores is: (RJ AARO Agri Chemistry 2022)
- > 0.2 mm
- > 0.02 mm
- > 0.002 mm
- > 0.005 mm
Which of the following enzyme is responsible for reducing nitrogen (N₂) to ammonia (NH₃)? (RJ AARO Agri Chemistry 2022)
- Amylase
- Nitrogenase
- Peptase
- Urease
In which year a comprehensive system of soil classification popularly known as 7th approximation was published? (RJ AARO Agri Chemistry 2022)
The sand dunes and depositions from materials transported by wind is: (RJ AARO Agri Chemistry 2022)
- Lacustrine deposits
- Colluvial material
- Aeolian deposits
- Delta deposits
The solubility of Gypsum salt (gL⁻¹) in water is: (RJ AARO Agri Chemistry 2022)
Biogas is a combination of which of the following gases? (RJ AARO Agri Chemistry 2022)
- CH₄, H
- CH₄, N
- CO₂, N, H
- CH₄, CO₂, H₂, N₂
The moisture content of soil at a point where the soil water mass flows under an applied force and fails to retain its shape is - (RJ AARO Agri Chemistry 2022)
- Lower plastic limit
- Plastic index
- Upper plastic limit
- Non-plastic
The Potassium (K) and Sulphur (S) content in Potassium Sulphate (K₂SO₄) is - (RJ AARO Agri Chemistry 2022)
- % and 17%
- % and 16%
- % and 13%
- % and 13%
Streptomycin, aureomycin,tetracycline, and neomycin antibiotics are produced from which of the following? (RJ AARO Agri Chemistry 2022)
- Bacteria
- Algae
- Actinomycetes
- Fungi
The conversion factor of P₂O₅ to P is - (RJ AARO Agri Chemistry 2022)
The unit of density in the CGS system is - (RJ AARO Agri Chemistry 2022)
- lb/cft
- g/cc
- Mg/m³
- g/kg
In the Freundlich equation M = AC^B, the 'C' stands for - (RJ AARO Agri Chemistry 2022)
- Concentration of N
- Concentration of P
- Concentration of K
- Concentration of Ca
The equivalent acidity of urea is - (RJ AARO Agri Chemistry 2022)
The Diagnosis and Recommendation Integrated System (DRIS) approach was given by - (RJ AARO Agri Chemistry 2022)
- Mitscherlich
- Beaufils
- Liebig
- Wallace
The word 'Chelate' that means claw is a term derived from which of the following language? (RJ AARO Agri Chemistry 2022)
- Greek
- French
- Italian
- Latin
The highest overall enzymatic activity is observed in which type of clay-sized soil particles? (RJ AARO Agri Chemistry 2022)
- Clay < 50 μ
- Clay 50-70 μ
- Clay 70-90 μ
- Clay > 90 μ
The contamination of soil by cadmium (Cd) is done by the application of which of the following fertilizers? (RJ AARO Agri Chemistry 2022)
- N
- P
- K
- S
Bonemeal is a rich source of which of the following elements? (RJ AARO Agri Chemistry 2022)
- P and Mg
- P and Ca
- P
- Mg
When organic matter is added to soil, the Particle Density (PD) of soil will - (RJ AARO Agri Chemistry 2022)
- Increase
- Decrease
- No change
- First increase then decrease
Bitter pit of apple is caused due to deficiency of which nutrient? (RJ AARO Agri Chemistry 2022)
- Ca
- Mg
- K
- B
The density of air (Mg/m³) is: (RJ AARO Agri Chemistry 2022)
The saline and alkali soils fall in which soil order? (RJ AARO Agri Chemistry 2022)
- Entisol
- Alfisol
- Aridisol
- Mollisol
Which of the following crops register the highest uptake of P and K respectively? (RJ AARO Agri Chemistry 2022)
- Tomato and Okra
- Radish and Banana
- Maize and Citrus
- Cabbage and Grape
Which one is the best indicator of soil fertility? (RJ AARO Agri Chemistry 2022)
- Soil pH
- Organic matter
- Available phosphorus
- Available micronutrients