UPHESC Assistant Professor Agricultural Chemistry & Soil Science PYQs

Concept: The Dharmashastras (e.g. Manusmriti) list eight forms of marriage.

1. Approved forms: Brahma, Daiva, Arsha, Prajapatya.
2. Disapproved forms: Asura, Gandharva, Rakshasa, Paishacha.

Short trick: 4 good + 4 bad = 8.

Concept: Subhas Chandra Bose compared Gandhi's Dandi March (1930) with Napoleon's march to Paris on his return from Elba.

1. Lala Lajpat Rai had died in 1928, before the march.
2. Motilal Nehru compared it with Rama's march to Lanka.

Short trick: Bose = Napoleon's Paris march; Motilal = Rama's march to Lanka.

Concept: Monazite is a phosphate of rare-earth elements and thorium; it is the main ore of thorium.

1. India's Kerala coast (beach sands) has among the world's largest monazite reserves.
2. Uranium in India comes mainly from Jaduguda (Jharkhand).

Short trick: Monazite = Thorium (Kerala sands).

Concept: The Pattern 1853 Enfield rifle replaced the old 'Brown Bess' musket.

1. Its cartridges were rumoured to be greased with cow and pig fat and had to be bitten open, which became an immediate cause of the 1857 revolt.

Short trick: Greased cartridge = Enfield.

Concept: Firoz Shah Tughlaq had Sanskrit works seized after the conquest of Nagarkot (Kangra) translated into Persian.

1. Standard Indian history texts credit his reign with the Persian translation of the music treatise 'Ragadarpan'.
2. The astronomy work 'Dalail-i-Firozshahi' was translated in the same drive.

Short trick: Nagarkot books, then Persian translations, under Firoz Tughlaq.

Concept: R.C. Dutt wrote 'The Economic History of India' in two volumes (1902 and 1904), covering early British rule and the Victorian age.

1. Dadabhai Naoroji wrote 'Poverty and Un-British Rule in India' (drain theory).

Short trick: Dutt = Economic History; Naoroji = Poverty and Un-British Rule.

Concept: Part XV (Articles 324–329) deals with elections and the Election Commission.

1. Part IV = Directive Principles; Part VIII = Union Territories; Part IX = Panchayats.

Short trick: Article 324 (Election Commission) lies in Part XV.

Concept: The first RRB, Prathama Bank (Moradabad, U.P., sponsored by Syndicate Bank), was set up on 2 October 1975.

1. This followed the Narasimham Working Group (1975); the RRB Act was passed in 1976.

Short trick: 2 October 1975 (Gandhi Jayanti), Prathama Bank.

Concept: A zombie firm cannot meet even its interest payments from its operating earnings, i.e. its interest coverage ratio (EBIT ÷ interest) is below 1.

1. Zombie lending = giving fresh loans to such a firm (ICR < 1) so it can keep servicing old loans.
2. Evergreening is the broader practice; the precise definition uses ICR < 1 of the borrower.

Short trick: Zombie = 'living dead': it earns less than its interest, so ICR < 1.

Concept: Article 21-A was inserted by the 86th Amendment (2002): free and compulsory education for children aged 6–14 years.

1. Article 21 = life and personal liberty; Articles 23–24 = against exploitation; Articles 29–30 = minorities.
2. The RTE Act, 2009 gives effect to Article 21-A.

Short trick: 21-A: A for 'Akshar' (education), 86th Amendment.

Concept: In the standard Indian textbook view, Indian soils fall in Entisols, Inceptisols, Alfisols, Vertisols, Aridisols, Ultisols, Oxisols, Mollisols and (small areas) Histosols; Spodosols, Andisols and Gelisols are listed as not found in India.

1. Spodosols need a spodic horizon formed by podzolisation under cool, humid coniferous forest on sandy acid material — not mapped in India.
2. Gelisols (permafrost within 2 m) are likewise listed as absent from India.
3. Aridisols (western Rajasthan) and Inceptisols (the most extensive order) are major Indian orders.
4. So both (B) Spodosols and (C) Gelisols fit the question — no single correct option.

Short trick: Not in India: Spodosols, Andisols, Gelisols.

Concept: Jackson and Sherman's weathering stages for clay-size minerals run from 1 (least weathered) to 13 (most weathered).

1. 1 gypsum, 2 calcite, 3 olivine/hornblende, 4 biotite, 5 albite, 6 quartz, 7 muscovite/illite, 8 vermiculite, 9 montmorillonite, 10 kaolinite, 11 gibbsite, 12 hematite, 13 anatase.
2. So biotite is at stage 4.

Short trick: "Gypsum-Calcite-Olivine-Biotite": the 4th is biotite.

Concept: In Brewer's micromorphology, the s-matrix is the fine fabric. Nodules, concretions and septaria (glaebules) embedded in it are pedological features formed by soil-forming processes.

1. When such pedogenic bodies are inherited from an earlier soil, they are called pedorelicts.
2. Lithorelicts are inherited rock fragments; 'sedimentary' and 'volcanic' relicts are not Brewer's categories for glaebules.

Short trick: Nodules and concretions are formed by soil (pedo) processes, so they are pedo relicts.

Concept: Lessivage is the mechanical washing of fine clay from A/E to B in suspension. The clay deposits as clay skins (cutans) and forms an argillic (Bt) horizon.

1. Eluviation only removes material from the upper horizon; the enrichment of B is due to lessivage (with illuviation).
2. Leucinization is the paling (lightening) of horizons when dark organic matter is removed.

Short trick: Lessivage = 'clay washing', which gives the Bt horizon.

Concept: Soil Taxonomy has diagnostic surface horizons (epipedons, e.g. ochric, mollic, umbric, histic) and diagnostic subsurface horizons (e.g. argillic, natric, spodic, cambic, oxic).

1. The English question asks simply for 'a diagnostic horizon': spodic, natric and argillic are diagnostic subsurface horizons and ochric is a diagnostic surface horizon — all four options are diagnostic horizons.
2. The Hindi version asks for a diagnostic surface horizon (सतही संस्तर), for which only Ochric fits.
3. The two language versions ask different things, and the English one has four correct options, so no single option can be marked.

Short trick: Epipedons: Mollic, Umbric, Ochric, Histic, Anthropic, Plaggen, Melanic, Folistic; the rest are subsurface.

Concept: Goldich (1938) proposed the mineral stability series for weathering of primary minerals. It is the reverse of Bowen's reaction series.

1. Olivine weathers fastest, followed by pyroxene, amphibole and biotite, while K-feldspar, muscovite and quartz are the most resistant.
2. Minerals that crystallise first at high temperature are least stable at the surface.

Short trick: Goldich = 'Bowen in reverse'.

Concept: Cryoturbation is frost churning (mixing by freeze–thaw), typical of permafrost-affected soils.

1. Such soils belong to the Gelisols (permafrost within 100 cm); the suborder Turbels is defined by cryoturbation.
2. Gelisols were added as the 12th order in 1998.

Short trick: Gel = frozen, so cryoturbation means Gelisols (Turbels).

Concept: Peptization (dispersion) of clay happens when the diffuse double layer is thick.

1. Na⁺ is monovalent and strongly hydrated, so it gives a thick double layer. Clay particles repel and disperse, as in sodic soils with ESP > 15.
2. Ca²⁺ and Mg²⁺ are flocculating cations.

Short trick: Na disperses, Ca flocculates (that is why gypsum is used for sodic soils).

Concept: In sodic ('black alkali') soils with pH > 8.5 and high exchangeable Na, organic matter dissolves as sodium humate.

1. The dispersed sodium humate moves up with water and dries as a dark film on the surface, which gives the black colour.
2. Calcium humate is insoluble and flocculated, so it does not cause this colouring.

Short trick: Black alkali = Na-humate; white alkali = salts.

Concept: Middleton's erosion ratio = dispersion ratio ÷ (colloid or clay content ÷ moisture equivalent).

1. Soils with an erosion ratio above 10 are considered erodible.
2. Clay ratio = (sand + silt) ÷ clay (Bouyoucos); dispersion ratio is only the numerator here.

Short trick: Dispersion ratio on top, clay/ME below, gives the erosion ratio (Middleton).