Description : Khaira disease of rice is controlled by spraying
Last Answer : Ans. Zinc sulphate (5 kg)+ lime (2.5 kg/ha) in 10 days nursery
Description : The khaira disease of rice is caused due to deficiency of which of the following? [a] Zinc [b] Nickel [c] Nitrogen [d] Sulphur [e] None of the above
Last Answer : [d] Sulphur
Description : Khaira disease in rice is due to the deficiency of (A) Boron (B) Mn (C)S (D) Zn
Last Answer : (D) Zn
Description : Disease caused by Zn deficiency is (A) Khaira (B) Mosaic (C) Die-back (D) Whip tail
Last Answer : (A) Khaira
Description : Widely used N-fertilizer in rice is (a) Ammonium sulphate (b) Calcium sulphate (c) Urea (d) DAP
Last Answer : (a) Ammonium sulphate
Description : Khaira disease of rice is caused by
Last Answer : Ans. Zinc deficiency
Description : Khaira disease of rice usually attack at — stage. a. Nursery b. Grain felling c. Flowering d. Harvesting
Last Answer : a. Nursery
Description : Rice blast is effectively controlled by spraying of
Last Answer : Ans. Edifenphos
Description : Zinc Sulphate (ZnSO 4 ) should not be mixed with— (A) D.A.P. (B) Compost fertilizer (C) Ammonium Chloride (D) Urea
Last Answer : (A) D.A.P.
Description : The most Suited N fertilizer for tea is: (A) Urea (B) Calcium nitrate (C) Ammonium chloride (D) Ammonium sulphate
Last Answer : (D) Ammonium sulphate
Last Answer : (A) Urea
Description : Which fertilizer is most beneficial for alkali soils? (a) Urea (b) Ammonium sulphate (c) Calcium ammonium nitrate (d) Ammonium nitrate
Last Answer : (c) Calcium ammonium nitrate
Description : Which of the ‘complex fertilizer’? 1) Ammonium sulphate nitrate 2) Single superphosphate 3) Ammonium phosphate 4) Calcium ammonium nitrate
Last Answer : 3) Ammonium phosphate
Description : Boron content in borax (suhaga) is (a) 11% (b) 25%(c) 19% (d) 39%
Last Answer : (a) 11%
Description : Alkali soils are treated with gypsum to correct the deficiency of- (a) Sulphur (b) Calcium (c) Magnesium (d) Zinc
Last Answer : (b) Calcium
Description : In cabbage, cauliflower and broccoli, hollow stems with darkened interiors are most often caused by? (Agriculture MCQ) [a] Calcium deficiency [b] Chilling temperatures [c] Boron deficiency [d] Magnesium deficiency [e] Zinc deficiency
Last Answer : [c] Boron deficiency
Description : Which element is involved in biosynthesis of IAA ? (A) Nitrogen (B) Boron (C) Zinc (D) Copper
Last Answer : (C) Zinc
Description : Which micro-nutrient is most deficient in Indo-Gangatic alluvium soils? (a) Iron (b) Zinc (c) Copper (d) Manganese
Last Answer : (d) Manganese
Description : The chemical used as a fixer in photography is - (1) sodium thiosulphate (2) sodium sulphate (3) borax (4) ammonium sulphate
Last Answer : (1) sodium thiosulphate Explanation: Fixation is commonly achieved by treating the film or paper with a solution of thiosulfate salt. Popular salts are sodium thiosulfate — commonly called hypo — and ammonium thiosulfate — commonly used in modern rapid fixer formulae.
Description : The chemical used as a fixer in photography is-----? A. sodium sulphate B. borax C. sodium thiosulphate (Answer) D. ammonium sulphate
Last Answer : C. sodium thiosulphate (Answer)
Description : Which type of N-fertilizer is suitable for water-logged soil? a) Zinc Phosphet b) Ammonium Sulphate c) Calcium d) Potassium Nitrate
Last Answer : b) Ammonium Sulphate
Description : The chemical used for destroying Fungi in water tanks is - (1) Copper sulphate (2) Magnesium sulphate (3) Zinc sulphate (4) Nitric acid
Last Answer : (1) Copper sulphate Explanation: Copper sulfate is a chemical compound which is produced commercially by reacting various copper (II) compounds with sulfuric acid. This compound is used in a wide range ... sprayed on grapes in the form of a water solution to reduce the risk of fungal infestations.
Description : The emf of a Deniell cell “Zn | Zn2+|| Cu2+| Cu” can be increased by (A) Decreasing the surface area of the electrodes (B) Increasing the concentration of zinc sulphate solution (C) Increasing the surface area of the electrodes (D) Increasing the concentration of copper sulphate solution
Last Answer : (D) Increasing the concentration of copper sulphate solution
Description : The chemical used for destroying Fungi in water tanks is (1) Copper sulphate (2) Magnesium sulphate (3) Zinc sulphate (4) Nitric acid
Last Answer : Copper sulphate
Description : Khaira disease is caused by
Last Answer : Ans.Zn deficiency.
Description : Spraying should be done according to thea) direction of air b) direction of wind c) cropping patter
Last Answer : b) direction of wind
Description : Deficiency of which of the following nutrient leads to terminal bud leaf becoming chlorotic white? [a] Copper [b] Calcium [c] Iron [d] Chlorine [e] None of the above
Last Answer : [e] None of the above
Description : Whip tail disease of cauliflower is caused by deficiency of— (A) Nitrogen (B) Boron (C) Molybdenum (D) Zinc
Last Answer : (C) Molybdenum
Description : Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator? (A) Cresylic acid (B) Copper sulphate (C) Calcium carbonate (D) Sodium carbonate
Last Answer : (B) Copper sulphate
Description : Write the molecular formulae of: 1. Copper oxide 2. Iron (III) chloride 3. Sodium hydroxide 4. Iron (II) sulphide 5. Lead (II) oxide 6. Hydrogen nitrate (nitric ... Hydrogen sulphate (sulphuric acid) 8. Calcium hydroxide 9. Magnesium carbonate 10.Ammonium carbonate
Last Answer : 1. Copper oxide - CuO 2. Iron (III) chloride - FeCl3 3. Sodium hydroxide - NaOH 4. Iron (II) sulphide - FeS 5. Lead (II) oxide - PbO 6. Hydrogen nitrate (nitric acid) - HNO3 7. ... ) - H2SO4 8. Calcium hydroxide - Ca(OH)2 9. Magnesium carbonate - MgCO3 10.Ammonium carbonate - (NH4)2CO3
Description : Which one is the major component of Bordeaux mixture a) Copper sulphate b) Sodium chloride c) Calcium chloride d) Magnesium sulphate
Last Answer : a) Copper sulphate
Description : White rust is an important fungal disease of? a. Wheat b. Mustard c. Rice d. Bajra e. Tea
Last Answer : b. Mustard
Description : White rust is an important fungal disease of – a) Wheat b) Mustard c) Rice d) Bajra
Last Answer : b) Mustard
Description : The MOST effective manner to produce a hard surface on a cast is by: A. Employ as much water as possible on mixing B. Employ as little water as possible on mixing C. Adding 2% of borax to the mix D. Adding calcium tetraborate E. None of the above
Last Answer : B. Employ as little water as possible on mixing
Description : Crystallisation of insulin occurs in the presence of (A) Chromium (B) Copper (C) Zinc (D) Calcium
Last Answer : Answer : C
Description : Haemoglobin formation needs both (A) Iron and Zinc (B) Iron and Calcium (C) Iron and Copper (D) Iron and Magnesium
Description : Asbestos is formed of : (1) Calcium and Magnesium (2) Copper, Zinc and Manganese (3) Lead and Iron (4) Calcium and Zinc
Last Answer : (1) Calcium and Magnesium Explanation: Pure and simple, asbestos is a group of naturally occurring minerals. It is composed of calcium and magnesium silicate. Asbestos occurs as veins in rocks and is mined from the ground, similar to coal.
Description : Minerals known to be required in large amounts for plant growth include (a) potassium, phosphorus, selenium, boron (b) magnesium, sulphur, iron, zinc (c) phosphorus, potassium, sulphur, calcium (d) calcium, magnesium, manganese, copper.
Last Answer : (c) phosphorus, potassium, sulphur, calcium
Last Answer : Calcium and Magnesium
Description : The permanent preservative, which is used for preservation of fruit and vegetables, is— (A) Sodium chloride (B) Potassium metabisulphate (C) Potassium sulphate (D) Sugar
Last Answer : (B) Potassium metabisulphate
Description : Sulphur content (%) in potassium sulphate fertilizer is (a) 50(b) 22 (c) 17 (d) 12
Last Answer : (b) 22
Description : Leaf drop disease in peach is caused due to the deficiency of - a) Ammonium b) Calcium c) Potassium d) Zinc
Last Answer : b) Calcium
Description : Sunflower is also known as an individual plant for the deficiency of (A) Nitrogen (B) Zinc (C) Boron (D) Potash
Last Answer : (A) Nitrogen
Description : Sugar-beet is an indicator plant for (A) Sodium (B) Molybdenum (C) Zinc (D) Phosphorus
Last Answer : (A) Sodium
Description : Which one of the following element is mobile in plants but immobile in soil ? (A) Sulphur (B) Zinc (C) Boron (D) Phosphorus
Last Answer : (D) Phosphorus
Description : Red soil is poor in which of the following nutrients ? (A) Phosphorus and Sulphur (B) Phosphorus and Nitrogen (C) Nitrogen and Zinc (D) Nitrogen and Potassium
Last Answer : (D) Nitrogen and Potassium
Description : What is the main function of zinc in the plants ? (A) Synthesis of nitrogen (B) Synthesis of phosphorus (C) Required for synthesis of Tryptophos (D) To increase activity of the boron
Last Answer : (C) Required for synthesis of Tryptophos
Description : Although a deficiency of any one of the elements listed may result in chlorosis, only one of these elements is an element found in chlorophyll. Which is it?(a) Zinc (b) Iron (c) Magnesium (d) Chloride
Last Answer : (c) Magnesium
Description : Tarai soils are generally deficient in:? a Zinc b Nitrogen c Phosphorus d Potash
Last Answer : a Zinc
Description : Downy mildew disease can be effectively managed by spraying of
Last Answer : Ans. Metalaxyl