The coefficient of uniformity in soil gradation is the ratio of:

Q.1

ICAR AIEEA PG 2024 - Agricultural Engineering and Technology (Q.25)

MCQ (Single Correct) +4 −1

मृदा श्रेणीकरण (soil gradation) में एकरूपता गुणांक (coefficient of uniformity, \(C_u\)) किसका अनुपात होता है?

\(D_{60}\) to \(D_{10}\) \(D_{60}\) to \(D_{10}\) \(D_{10}\) to \(D_{60}\) \(D_{10}\) to \(D_{60}\) \(D_{50}\) to \(D_{10}\) \(D_{50}\) to \(D_{10}\) \(D_{10}\) to \(D_{50}\) \(D_{10}\) to \(D_{50}\)

Q.2

ICAR AIEEA PG 2024 - Agricultural Engineering and Technology (Q.26)
MCQ (Single Correct) +4 −1

English हिन्दी

Atterberg limits of a soil represent
which of the following property at critical stages of soil behaviour?

मृदा के अटरबर्ग सीमाएं (Atterberg limits) मृदा व्यवहार के महत्वपूर्ण चरणों में निम्नलिखित में से किस गुण का प्रतिनिधित्व करती हैं?

Soil moisture मृदा नमी / जल अंश Correct Incorrect Soil texture मृदा गठन Correct Incorrect Soil structure मृदा संरचना Correct Incorrect Soil cohesion मृदा संसंजन Correct Incorrect

EXPLANATION Soil Mechanics: Phase Relations, Soil Index Properties, Particle Size and Consistency Limits

The Atterberg Limits (developed by Swedish chemist Albert Atterberg in 1911) quantify the critical soil moisture contents (water percentages) at which fine-grained cohesive soils transition between different behavioral states:

Liquid Limit (LL): The moisture content at which soil transitions from a plastic state to a liquid state.

Plastic Limit (PL): The moisture content at which soil transitions from a semi-solid to a plastic state.

Shrinkage Limit (SL): The moisture content below which further loss of water produces no additional volume reduction.

Thus, Atterberg limits represent soil moisture (water content).

अटरबर्ग सीमाएं (Atterberg limits) बारीक कणों वाली संसंजी मृदाओं के विभिन्न अवस्थाओं (ठोस, अर्ध-ठोस, प्लास्टिक, तरल) के बीच संक्रमण बिंदु पर मृदा नमी / जल अंश (water content) के विशिष्ट प्रतिशत मानों को दर्शाती हैं।

Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report

Q.3

ICAR AIEEA PG 2024 - Agricultural Engineering and Technology (Q.102)
Statement Based +4 −1

English हिन्दी

Given below are two statements
Statement (I) : Soil profile is a vertical section of the soil from the surface through all its horizons.
Statement (II) : Soil texture is the arrangement of individual soil particles with respect to each other into a pattern.
In light of the above statements, choose the most appropriate answer from the options given below:

नीचे दो कथन दिए गए हैं
कथन (I) : मृदा परिच्छेदिका (Soil profile) सतह से लेकर इसके सभी संस्तरों (horizons) से होकर मृदा का एक लंबवत खंड (vertical section) है।
कथन (II) : मृदा बनावट (Soil texture) व्यक्तिगत मृदा कणों की एक-दूसरे के सापेक्ष एक पैटर्न में व्यवस्था है।
उपरोक्त कथनों के आलोक में, नीचे दिए गए विकल्पों में से सबसे उपयुक्त उत्तर चुनें:

Both Statement (I) and Statement (II) are correct कथन (I) और कथन (II) दोनों सही हैं Correct Incorrect Both Statement (I) and Statement (II) are incorrect कथन (I) और कथन (II) दोनों गलत हैं Correct Incorrect Statement (I) is correct but Statement (II) is incorrect कथन (I) सही है लेकिन कथन (II) गलत है Correct Incorrect Statement (I) is incorrect but Statement (II) is correct कथन (I) गलत है लेकिन कथन (II) सही है Correct Incorrect

EXPLANATION Soil Mechanics: Phase Relations, Soil Index Properties, Particle Size and Consistency Limits

In soil science and engineering:
Statement (I) is correct: A soil profile is defined as the vertical section of the soil exposed from the ground surface down through all its master horizons (O, A, E, B, C) to the underlying parent bedrock.
Statement (II) is incorrect: The arrangement or grouping of individual soil particles into definite aggregates, clusters, or structural patterns is defined as Soil Structure, NOT soil texture. Soil Texture refers strictly to the relative proportions of different soil separates (sand, silt, and clay).

Therefore, Statement (I) is correct but Statement (II) is incorrect.

मृदा विज्ञान में:
कथन (I) सही है: मृदा परिच्छेदिका (Soil profile) सतह से लेकर मूल चट्टान तक मृदा के सभी संस्तरों (horizons) का ऊर्ध्वाधर काट (vertical section) होती है।
कथन (II) गलत है: मृदा कणों का आपस में किसी निश्चित पैटर्न में व्यवस्थित होना मृदा संरचना (Soil Structure) कहलाता है, न कि बनावट। मृदा बनावट (Soil Texture) बालू, सिल्ट और क्ले के सापेक्षिक अनुपात को दर्शाती है।

अतः कथन (I) सही है लेकिन कथन (II) गलत है।

Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report

Agricultural Engineering and Technology Subjects

Engineering Mathematics & Statistics

Electrical Engineering, Instrumentation & Computers

Thermodynamics, Fluid Mechanics & Theory of Machines

Soil Mechanics, Engineering Mechanics & Strength of Materials

Farm Machinery, Farm Power & Renewable Energy Engineering

Processing and Food Engineering

Soil and Water Conservation & Irrigation and Drainage Engineering

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