How is granular zinc & zinc dust obtained ?

How is granular zinc & zinc dust obtained ?
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Ans. Granular zinc is obtained by pouring molten zinc in cold water & zinc dust by melting zinc & then atomising it with blast of air. 
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Zinc dust is obtained by

Description : Zinc dust is obtained by

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Pick out the wrong statement. (A) Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions ornitrate ions and forms amino acids(B) Calcium present in the fertiliser helps in correcting the soil acidity(C) Particle size range of a good granular fertiliser is 10-15 mesh and itcontains less moisture as compared to finely divided powder form of fertiliser(D) Ammonium nitrate fertiliser is obtained as a by-product in an integratedsteel plant having by-product coke ovens

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Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes (A) Asphyxiation (suffocation) (B) Shortness of breath (C) Tuberculosis (D) All (A), (B) and (C)

Description : Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes (A) Asphyxiation (suffocation) (B) Shortness of breath (C) Tuberculosis (D) All (A), (B) and (C)

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Which of the following reactions does not produce benzene as one of the products? (a) Treating benzenediazonium chloride with H3PO2 (b) Distilling phenol with zinc dust (c) Fusing sodium benzoate with NaOH (d) Fusing sodium benzenesulfonate with NaOH

Description : Which of the following reactions does not produce benzene as one of the products? (a) Treating benzenediazonium chloride with H3PO2 (b) Distilling phenol with zinc dust (c) Fusing sodium benzoate with NaOH (d) Fusing sodium benzenesulfonate with NaOH

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Resorcinol on distillation with zinc dust gives (a) Benzene (b) Cyclohexane (c) Toluene (d) m-Xylene

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Cresols on distillation with zinc dust gives (a) o-Xylene(b) Benzene(c) o- plus p-Xylene(d) Toluene

Description : Cresols on distillation with zinc dust gives (a) o-Xylene (b) Benzene (c) o- plus p-Xylene (d) Toluene

Last Answer : Toluene

Phenol on distillation with Zinc dust gives (a) Phenylzinc (b) Benzene (c) Cyclohexanone (d) Benzoic acid

Description : Phenol on distillation with Zinc dust gives (a) Phenylzinc (b) Benzene (c) Cyclohexanone (d) Benzoic acid

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Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the (A) Light metal powder down upto 4 mesh size (B) Dry chemicals (C) Heavy tonnages of rocks or gravel (D) Powdered food & granular materials

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Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of (A) Powder & granular solids (B) Liquids (C) Low melting point semi-solids (D) All 'a', 'b' & 'c

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Last Answer : (D) All 'a', 'b' & 'c

Consider the following statements: 1. Relative density is a meaningful parameter for all types of soils 2. Relative density is a meaningful parameter only for cohesion soils. 3. Relative density is a better indicator of the denseness of an in-situ granular soil deposit than the void ratio. Which of these statements are correct? (a) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only

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Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on furhter treatment with aqueous KOH yields comp

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Phenol on distilling with zinc dust gives

Description : Phenol on distilling with zinc dust gives

Last Answer : Phenol on distilling with zinc dust gives A. benzene B. diphenyl ether C. diphenol D. zinc phenoxide

How would you separate the mixture of iron dust and zinc dust?

Description : How would you separate the mixture of iron dust and zinc dust?

Last Answer : An electromagnet would attract the iron particles and leave thezinc behind. Tapping or vibrating the electromagnetic would shakeof the zinc and help prevent zinc from clinging with the iron. Onceseparated, turning of the electromagnetic should release the ironparticles from the magnet.

Siderosis is a disease caused by the inhalation of - (1) silica dust (2) iron dust (3) zinc dust (4) coal dust

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Babbitt metal (used for making bearings) comprises of (A) Mainly tin (85%) and lead (B) Saw dust and iron dust mixture (C) Zinc and aluminium (D) Copper and aluminium

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Last Answer : (A) Mainly tin (85%) and lead

Siderosis is a disease caused by the inhalation of (1) silica dust (2) iron dust (3) zinc dust (4) coal dust

Description : Siderosis is a disease caused by the inhalation of (1) silica dust (2) iron dust (3) zinc dust (4) coal dust

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Silver is obtained from the lead & Zinc ares of Zawar mines in which city? -General Knowledge

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Silver is obtained from the lead & Zinc ares of Zawar mines in which city? -General Knowledge

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Silver is obtained from the lead & Zinc ares of Zawar mines in which city?

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If the universe turns out to be granular (meaning there is a smallest length and a smallest unit of time), is mathematics as it exists today a flawed, or even the wrong tool to describe reality?

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When applying granular fertilizer to Rhododendrons where should a sprinkle it and why?

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(a) granular structure (b) first observed under the electron microscope as dense particles by Geprge Palade ( c ) composed of RNA and proteins not sur

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The outer cortex of the kidney in a TS appears granular or dotted because of

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What is different granular b ands granular a?

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Which of the following term best described the overload distortion? A. Peak limiting B. Quantization noise C. Granular noise D. Slope distortion

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_______ is more prevalent in analog signals that have steep slopes or whose amplitudes vary rapidly. A. Peak limiting B. Quantization noise C. Granular noise D. Slope overload

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__________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials. (A) Bucket (B) Belt (C) Screw (D) Apron

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Mass flow of granular solid (M) through a circular opening of dia, D follows (A) M ∝ √D (B) M ∝ D2 (C) M ∝ D3 (D) M ∝ D

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Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines? (A) Compartment mill (B) Rod mill (C) Pebble mill (D) Tube mill

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Which of the following undergoes granular fracture? (A) Wrought iron (B) Steel (C) Cast iron (D) None of these

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Rotary dryers cannot handle __________ materials. (A) Free flowing (B) Dry (C) Sticky (D) Granular

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For continuous drying of granular or crystalline material, the dryer used is the __________ dryer.(A) Tunnel (B) Tray (C) Rotary (D) None of these

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Free flowing granular materials can be best dried in a __________ drier. (A) Rotary (B) Cylinder (C) Drum (D) Freeze

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Define slope overload noise and granular noise.

Description : Define slope overload noise and granular noise.

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Fat globules in milk are in the form of a. Colloidal b. Emulsion c. Granular d. None of these

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The process of passing water through beds of granular materials, is called (A) Screening (B) Sedimentation (C) Filtration (D) None of these

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The shear strength in plastic undrained clay, is due to (A) Inter-granular friction (B) Internal friction (C) Cohesion (D) None of these

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Wood is a/an __________ material. (A) Amorphous (B) Cellular (C) Homogeneous (D) Granular

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The nurse knows that a postoperative vision-threatening complication of LASIK refractive surgery, diffuse lamellar keratitis (DLK) occurs a) in the first week after surgery. DLK is a peculiar, non-infectious, inflammatory reaction in the lamellar interface after LASIK. It is characterized by a white granular, diffuse culture-negative lamellar keratitis occurring in the first week after surgery. Studies suggest that since no single agent appears to be solely the cause of DLK, a multifactorial etiology is likely.

Description : The nurse knows that a postoperative vision-threatening complication of LASIK refractive surgery, diffuse lamellar keratitis (DLK) occurs a) in the first week after surgery. DLK is a peculiar, non-infectious, ... after surgery. d) 6 months after surgery. DLK occurs in the first week after surgery.

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Another term for clergyman’s sore throat is a) chronic granular pharyngitis. In clergyman’s sore throat, the pharynx is characterized by numerous swollen lymph follicles. b) aphonia. Aphonia refers to the inability to use one’s voice. c) atrophic pharyngitis. Atrophic pharyngitis is characterized by a membrane that is thin, white, glistening, and at times wrinkled. d) hypertrophic pharyngitis. Hypertrophic pharyngitis is characterized by general thickening and congestion of the pharyngeal mucous membrane.

Description : Another term for clergyman's sore throat is a) chronic granular pharyngitis. In clergyman's sore throat, the pharynx is characterized by numerous swollen lymph follicles. b) ... . Hypertrophic pharyngitis is characterized by general thickening and congestion of the pharyngeal mucous membrane.

Last Answer : a) chronic granular pharyngitis. In clergyman’s sore throat, the pharynx is characterized by numerous swollen lymph follicles.

Most suitable material for highway embankments is (A) Granular soil (B) Organic soil (C) Silts (D) Clays

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The most useless aggregate is one whose surface texture is (A) Smooth (B) Granular (C) Glassy (D) Honey combed and porous

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Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to the shape of the particles, concrete aggregates are classified as rounded irregular, angular and flaky (C) According to the surface texture of the particles, the concrete aggregates are classified as glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above

Description : Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to ... glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above

Last Answer : Answer: Option D

Why Is The Use Of Granular Sub-base In Concrete Carriageways Not Preferred, Explain?

Description : Why Is The Use Of Granular Sub-base In Concrete Carriageways Not Preferred, Explain?

Last Answer : Answer : Some of the reasons why granular sub-base is not preferred in concrete carriageways:  Sub bases are permeable and hence water can seep through them easily. The soil particles get pumped ... sub-base. This can lead to the cracking of the carriageway when there is severe traffic loading.

The bounded Quantization error is also called__________. A. overload error B. overload noise C. granular error D. All of above

Description : The bounded Quantization error is also called__________. A. overload error B. overload noise C. granular error D. All of above

Last Answer : C. granular error