Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 B.Sc Agriculture for competitive -paper13

Volumetrically soil contains ___________ % mineral matter.

(A) 25 (B) 5 (C) 45 (D) 40

The soil colours are determined by:

(A) Munsell chart (B) Periodic table (C) Fertility chart

The reaction of oil/fat with NaOH/KOH as..

(a) Hydrogenation (b) Saponification (c) Halogenation (d) Hydrolysis

Monosaccharids possess reducing property due to the presence of

(a) Free aldehyde or keto group (b) Free alcohol group

(c) Free amino group (d) Free thiol group

Compounds which in solution rotate the plane of polarized light to the right are called

(a) Laevo rotatory (b) Dextro rotatory (c) Optically inactive (d) All of three

At isoelectric point the proteins are

(a) Acidic (b) Neutral (c) Basic (d) None of these

Enzymes which exist in multiple forms within single specing of an organism

(a) Isoenzyme (b) Coenzyme (c) Apoenzyme (d) Holoenzyme

Chlorophyll is present in

(a) Vacuole (b) Nucleus (c) Chloroplast (d) Golgi body

Man cannot digest cellulose due to the absence of

(a) Hemicellulase (b) Protease (c) Lipase (d) Cellulase

Number of hydrogen bonds present between adenine and thymine

(a) 1 (b) 2 (c) 3 (d) 4

Socrates was given a cup of

(a) Dhatura alkaloid (b) nicotine (c) Stachydrine (d) Hordinine

ATP is produced in the cristae of

(a) Mitochondria and chloroplasts (b) Stroma (c) Nucleus (d) Cell wall

The cation exchange phenomenon was first recognized by __________ .

(a) Walkly and Black (b) Thompson and Way (c) Arnon and Stout (d) William and Tan

________ hydroxide act as cementing agent in binding the soil particles together.

(A) Ca & Mg (B) Fe & Al (C) Na & K (d) Ca & Na

_________ reagent is used for the determination of micronutrient cations from the soil.

(A) EDTA (B) CDTA (C) DTPA (d) TEA

_____ fertilizers are applied for improvement of quality and strength of fiber crops.

(A) Phosphatic (B) Nitrogenous (C) Potassic (d) sulphur

______ process depends on partial dissociation of water into H and OH ions.

(A) Hydrolysis (B) Hydration (C) Solution (d)Carbonation

________ is the ability of a substance to transfer heat from molecule to molecule.

(A) Specific heat (B) Heat capacity (C)Thermal conductivity (d)Thermal diffusivity

_________ is non-symbiotic N-fixer in soil.

(A) Rhizobium (B) Fungi (C) Azatobactor (d) Azospirillium

_________ is symbiotic N-fixer in leguminous crop.

(A) Fungi (B) Azatobactor (C) Rhizobium (d) Azospirillium