Potassium constitutes how much percent of the earth's crust? | Agrigyan

All Subjects History, Culture & Heritage of Rajasthan Geography, Natural Resources & Socio-Economic Development of Rajasthan Soil Physical Chemistry, Colloids & Organic Matter Ion Exchange, Soil Reaction, Nutrient Fixation & Submerged Soils Soil Mineralogy & Clay Minerals Pedology, Weathering & Soil Classification Soil Survey, Land Evaluation & Remote Sensing/GIS Soil Physics & Soil Moisture Management Soil Fertility, Plant Nutrients & Fertilizer Technology Analytical Instruments, Soil Testing, INM & Soil Health Soil Microbiology, Biochemistry & Organic Manures Problematic Soils, Poor Quality Water & Watershed Management Agricultural Pollution & Remediation Volumetric & Analytical Chemistry Radioisotopes & Nuclear Techniques in Soil Science

Q.81

RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022

MCQ (Single Correct) +1 −0.33

For preparation of 2 liter solution of 1N potassium dichromate, how much quantity of chemical is needed?

दो लीटर 1N पोटैशियम डाइक्रोमेट का विलयन बनाने के लिए कितनी मात्रा में रसायन की आवश्यकता होगी?

24.52 gm 24.52 ग्राम 49.04 gm 49.04 ग्राम 75.53 gm 75.53 ग्राम 98.08 gm 98.08 ग्राम

Q.82

RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022

MCQ (Single Correct) +1 −0.33

For determination of half life of radioactive materials, the instrument used is -

रेडियोधर्मी पदार्थों की अर्ध-आयु की जाँच में जो यंत्र उपयोग में लेते हैं, वह है -

Mass spectrometry मास स्पेक्ट्रोमेट्री Neutron scattering meter न्यूट्रॉन प्रकीर्णन मीटर Geiger Muller counter गीगर मुलर काउंटर TOC analyser टी.ओ.सी. विश्लेषक

Q.83

RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022

MCQ (Single Correct) +1 −0.33

Potassium constitutes how much percent of the earth's crust?

भू-पपड़ी में कितना प्रतिशत पोटैशियम होता है?

1.5% 1.5 प्रतिशत 2.5% 2.5 प्रतिशत 3.5% 3.5 प्रतिशत 4.5% 4.5 प्रतिशत

Q.84

RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022

MCQ (Single Correct) +1 −0.33

Most fertile soils developed due to transportation and deposition of parent material, is called as -

पैतृक पदार्थों के परिवहन तथा जमा होने से उपजाऊ मृदाओं का निर्माण होता है, जो कहलाती है -

Alluvium एल्युवियम Colluvium कोल्युवियम Lacustrine लैकुस्ट्रिन Aeolian एओलियन

Q.85

RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022

MCQ (Single Correct) +1 −0.33

According to land capability classification, the class VI denoted by the colour on map is -

भूमि क्षमता वर्गीकरण के अनुसार कक्षा VI को मानचित्र पर जिस रंग से दर्शाया जाता है, वह है -

Dark grey गहरा भूरा Green हरा Yellow पीला Orange नारंगी

History, Culture & Heritage of Rajasthan 14
Geography, Natural Resources & Socio-Economic Development of Rajasthan 16
Soil Physical Chemistry, Colloids & Organic Matter 15
Ion Exchange, Soil Reaction, Nutrient Fixation & Submerged Soils 9
Soil Mineralogy & Clay Minerals 11
Pedology, Weathering & Soil Classification 6
Soil Survey, Land Evaluation & Remote Sensing/GIS 8
Soil Physics & Soil Moisture Management 11
Soil Fertility, Plant Nutrients & Fertilizer Technology 23
Analytical Instruments, Soil Testing, INM & Soil Health 8
Soil Microbiology, Biochemistry & Organic Manures 1
Problematic Soils, Poor Quality Water & Watershed Management 7
Agricultural Pollution & Remediation 6
Volumetric & Analytical Chemistry 9
Radioisotopes & Nuclear Techniques in Soil Science 6

History, Culture & Heritage of Rajasthan

9 Topics

Visual Art: Architecture, Sculpture & Paintings Social Life: Fairs, Festivals, Customs, Attire & Ornaments Age of Rajputs Performing Arts: Music, Dance & Drama Religious Cults, Saints & Folk Deities Language, Dialects & Literature of Rajasthan Pre & Early History of Rajasthan Emergence of Modern Rajasthan & Freedom Struggle Integration of Rajasthan

Geography, Natural Resources & Socio-Economic Development of Rajasthan

7 Topics

Drainage System & Irrigation Projects Soils, Forests & Wildlife Conservation Physiographic Divisions & Relief Features Demographics, Castes & Tribes Climate & Agro-Climatic Regions Environmental & Ecological Concerns Mineral & Power Resources

Soil Physical Chemistry, Colloids & Organic Matter

6 Topics

Diffuse Double Layer & Electrokinetic Properties of Colloids Soil Organic Matter Fractionation & Clay-Organic Interactions Soil Colloids & Origin of Charge Elemental Composition of Earth's Crust and Soils Active Adsorption and Desorption Properties of Soil Colloids Soil Physical Chemistry & Chemical Thermodynamics

Ion Exchange, Soil Reaction, Nutrient Fixation & Submerged Soils

6 Topics

Cation and Anion Exchange in Soils Nutrient Fixation in Soils (K, P, NH4+) Chemistry of Acid Soils Soil Reaction (pH) & Nutrient Availability Chemistry and Electrochemistry of Submerged Soils Soil-Pesticide Interaction

Soil Mineralogy & Clay Minerals

2 Topics

Crystalline & Non-Crystalline Clay Minerals Structural Chemistry & Classification of Soil Minerals

Pedology, Weathering & Soil Classification

3 Topics

Soil Formation Factors, Processes & Soil Profile Soil Classification Systems & Soil Taxonomy Weathering of Rocks and Minerals

Soil Survey, Land Evaluation & Remote Sensing/GIS

4 Topics

Soil Survey & Soil Mapping Major Soil Groups of India and Rajasthan Land Capability, Irrigability & Land Evaluation Remote Sensing and GIS Techniques

Soil Physics & Soil Moisture Management

3 Topics

Soil Moisture Classification, Movement & Management Soil Physical Properties Soil Air and Soil Temperature

Soil Fertility, Plant Nutrients & Fertilizer Technology

4 Topics

Micronutrients & Role of Chelates Fertilizer Manufacturing Processes & Characteristics Soil Fertility, Productivity & Essential Plant Nutrients Macronutrients (N, P, K, S) Forms & Transformations

Analytical Instruments, Soil Testing, INM & Soil Health

4 Topics

Soil Test Methods & Soil Test Crop Response (STCR) Analytical Instruments in Soil Testing Soil Fertility Evaluation, Field Trials & Soil Health Fertilizer Use Efficiency, SSNM & INM

Soil Microbiology, Biochemistry & Organic Manures

4 Topics

Biological Nitrogen Fixation, Bio-fertilizers & Organic Manures Microbial Transformation of Plant Nutrients Soil Organic Matter, Humus & Waste Recycling Soil Biota, Rhizosphere Biochemistry & Soil Enzymes

Problematic Soils, Poor Quality Water & Watershed Management

3 Topics

Salt-Affected Soils & Poor-Quality Waters Soil Erosion, Conservation & Watershed Management Acid, Acid-Sulphate & Permeability-Problem Soils

Agricultural Pollution & Remediation

1 Topic

Soil, Water and Air Pollution in Agriculture

Volumetric & Analytical Chemistry

2 Topics

Analytical Reagents, Indicators & Standard Curves Acid-Base, Redox & Complexometric Titrations

Advanced Soil & Plant Chemical Analysis

3 Topics

Nutrient Potentials, Buffering & Fixation Capacities Electrochemical Titration & Exchange Capacity Estimation Soil and Plant Sample Analysis for Essential Nutrients

Radioisotopes & Nuclear Techniques in Soil Science

2 Topics

Radioactivity, Radioisotopes & Nuclear Radiations Radiation Monitoring & Nuclear Instruments

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