Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. MCQ's Search Engine. Hydrometer method is used to determine the particle size distribution of fine-grained soils passing 75 µ sieve. 4. PCF-81500. Base solution of 1000ml and the same amount of dispersing agent was prepared in a separate measuring cylinder. The dispersing agent correction in hydrometer reading is always_____ a) Positive b) Both negative and positive c) Negative 5. PCF-10380. In calibration of hydrometer reading, the reduced reading are designated as _____ a) RS b) RH c) RR d) RL Answer: b Clarification: The reducing reading is designated as RH, which is used for calibration of hydrometer. When the hydrometer analysis is performed, it requires correction for [A]. PCF-10580 . 2. The method is based on Stoke’s law governing the rate of sedimentation of particles suspended in water. MODEL DESCRIPTION; S-30060: Sodium Hexametaphosphate Dispersing Agent, 1 lb container: Related Products. The hydrometer method is used to determine the distribution of the finer particles. The principal of Stokes law, which states that particles will fall out of suspension at different rates over time, based on particle size, is used to determine the amount of each particle size present in a soil. Dispersing agent used in hydrometer analysis of soils. The correction factor, Cd, is determined by adding to a 1000-ml graduate partially filled with distilled or demineralized water the amount of dispersing agent to be used for the particular test, adding additional distilled water to the 1000-ml mark, then inserting a hydrometer … B. FAQ About Contact • Sign In Create Free Account. a) Hydrochloric acid b) Sodium oxalate Feb 15,2021 - In hydrometer analysis for a soil massa)Both meniscus correction and dispersing agent correction are additiveb)Both meniscus correction and dispersing agent correction are subtractivec)Men is cuscorrection is additive and dispersing agent correction is subtractived)Men is cuscorrection is subtractive and dispersing agent correction is additiveCorrect answer is option 'C'. The dispersing agents in soil particle, may act as __________a) Cementing agentb) Separating agentc) Soluble agentd) Deflocculating agentAnswer: aClarification: The dispersing agents that are mixed with soil particle act as a cementing soluble to withhold the particles present. Automobile Engineering . Which of the following are used as a standard sedimentation method in a laboratory?a) Sedimentation analysis methodb) Hydrometer methodc) Pipette methodd) Sand replacement methodAnswer: cClarification: Pipette method is used as a standard sedimentation method than hydrometer in a laboratory. RE: Calgon as a Dispersing Agent Dirtguy4587 (Geotechnical) 5 Jan 09 17:46 I know in undergrad labs (10 years ago-ish), we used Calgon, and to be perfectly honest, since I haven't done any dispersion tests since, I thought people still used Calgon. Hydrometer Analysis: 9. Note: This item cannot be exported. Add 150 ml of hydrogen peroxide to the soil sample placed in a wide mouth conical flask and stir it gently for few minutes with a glass rod. This suspension should be made 24 hrs before testing. A solution of sodium hexametaphosphate shall be used in distilled or demineralized water, at the rate of 40 g of sodium hexametaphosphate/litre of solution.a NOTE a: Solution should be made frequently or adjusted to pH 8 or 9 by means of sodium carbonate. 4. Hydrometer analysis is used to determine the density of soil suspension. theories of hydrometer analysis. Weigh out a sample of the air-dry fine fraction. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. C. Meniscus correction is positive while dispersing agent correction is negative. Dispersing agents are added in the analysis to increase the interparticle repulsion and thereby decrease the tendency of particle flocculation during sedimentation. Figure 6 Effect of volume and concentration of NaPP as a dispersing agent in determining the clay content of black soil - "The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis : technical paper" Download MSDS Sheet. 10. silt, use approximately 50g, but if the soil is mostly sand, use approximately 100g. Sodium Hexametaphosphate (SHMP) is a dry powder dispersion agent mixed into soil hydrometer solutions to prevent clay platelets from sticking together in the sedimentation solution.Required in hydrometer analysis of soils to determine silt and clay fractions. Artificial Intelligence Agents MCQ. Temperature only; Meniscus only; Dispersing agent only; All of these (Ans) temperature only [B]. Weighted soil was placed in a beaker and 125 ml of the Sodium Hexametaphosphate solution (40g/litre) was added. Which of the following is not a disadvantage, in using the pipette method for sedimentation analysis?a) The apparatus is very simpleb) Requires very accurate weightc) It requires more timed) The method of process is simpleAnswer: dClarification: In pipette method, the method of process is simple. Home » Geotechnical Engineering 1 Objective Questions » 250+ TOP MCQs on Pipette Method and Answers. $9.50: SA-0592 Sodium Hexametaphosphate, 10 lb. Civil Engineering. 1. Intelligent Agents MCQs : This section focuses on "Agents" in Artificial Intelligence. all of these Mechanical Engineering. 10 o C; 15 o C; 20 o C; 27 o C (Ans) 63.When the hydrometer analysis is performed, it requires correction for. d. DISPERSING AGENT d.1. 2. Electrical Engineering. If the soil is predominately clay and silt, use approximately 50g, but if the soil is mostly sand, use approximately 100g. The dispersing agent, such as sodium hexametaphosphate (or Calgon), is needed to neutralize the particle charges on fine clay particles and prevent flocculation. Deflocculating agent (sodium Hexa metaphosphate solution prepared by dissolving 33g of sodium Hexa metaphosphate and 7g of sodium carbonate in distilled water to make one litre solution) In hydrometer analysis for a soil mass. Chemical Engineering. The hydrometer method of particle size analysis calculates the physical proportions of these soil particles based on their settling rates in an aqueous solution and identifies three size classes: sand (2000 – 50 µm), silt (50 – 2.0 µm) and clay < 2.0 µm. Treatment is effective when the soil holds the wastewater long enough for microbes to remove contaminants. Feb 26,2021 - Properties Of Soil - 3 | 20 Questions MCQ Test has questions of Civil Engineering (CE) preparation. 2.12 Timing Device: A watch or clock that indicates hours, minutes, and seconds. Analysis done by the help of Hydrometer or Pipette. You are currently offline. In hydrometer method, the sampling depth h is kept at a constant of _____ a) 14 cm b) 9 cm c) 8 cm d) 10 cm; In calibration of hydrometer reading, the reduced reading are designated as _____ a) RS b) RH c) RR d) RL The dispersing agent correction in hydrometer reading is always_____ a) Positive b) Both negative and positive c) Negative d) Equal Contact us: info@geekmcq.com, If the volume of voids is equal to the volume of soil solids, then the values of porosity and void ratio are respectively, The water content of soils can be accurately determined by, The specific gravity of soil solids is determined by, grain size distribution of those soils whose grain size is finer than 0.075 mm. The standard temperature at which the hydrometer is calibrated is, When the hydrometer analysis is performed, it requires correction for, According to Stoke's law, the velocity at which grains settle out of suspension, all other factors being equal, is dependent upon, According to Indian standards, the dispersing solution used in pipette method, for the determination of size of particle consists of, 7 g sodium carbonate, 43 g sodium hexameta-phosphate and 1 litre distilled water, 7 g sodium carbonate, 33 g sodium hexameta-phosphate and 1 litre distilled water, 7 g sodium carbonate, 23 g sodium hexameta-phosphate and 1 litre distilled water. Hydrometer Analysis . 62.The standard temperature at which the hydrometer is calibrated is. The solved questions answers in this Properties Of Soil - 3 quiz give you a good mix of easy questions and tough questions. X. Add 15ml of the dispersing agent (antiflocuant) at this time. Learn Soil Mechanics And Foundation MCQ questions & answers are available for a Civil Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. 12. Semantic Scholar extracted view of "The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis : technical paper" by A. Kaur et al. Medical Science Engg. The volume (or) capacity of boiling tube taken in pipette method is about __________a) 750 mlb) 1000 mlc) 500 mld) 800 mlAnswer: cClarification: The boiling tube of 500 ml capacity is used in pipette analysis apparatus. The sodium hexametaphosphate Dispersing Agent is used to keep the particles from coming out of suspension and flocculating during the particle size determination. d.2. Page-7 section-2 The correction factor, Cd, is determined by adding to a 1000-ml graduate partially filled with distilled or demineralized water the amount of dispersing agent to be used for the particular test, adding additional distilled water to the 1000-ml mark, then inserting a hydrometer … 2.11 Stirring Rod: A glass stirring rod for each beaker for mixing the hydrometer analysis sample in the dispersing agent. This is done in the following steps: 1. A. both meniscus correction and dispersing agent correction are additive B. both meniscus correction and dispersing agent correction are subtractive C. meniscus correction is additive and dispersing agent correction is subtractive D. meniscus correction is subtractive and dispersing agent correction is additive Answer: Option C The dispersing agent fulfills two functions vital to the accuracy of the analysis: (1) assisting the mechanical … 2.13 Rubber Stopper: A stopper of sufficient size for sealing the top of the sedimentation cylinder while shaking the hydrometer analysis sample. 6. Weigh 50 to 100g of oven-dried soil sample (M d) passing the 4.75 mm IS Sieve (50g for clay soil and 100g if it is a sandy soil). Analysis The sediment to be analyzed is thoroughly dispersed in 1000ml solution of distilled water and dispersing agent. Hydrometer analysis is the most widely used technique for the analysis of fine grained soil. This was attributed to consolidation of uniformly sized particles in the hydrometer jar, producing a greater apparent specific gravity in the zone meas­ ured by the hydrometer. A. both meniscus correction and dispersing agent correction are additive B. both meniscus correction and dispersing agent correction are subtractive In the pipette method of sedimentation analysis, the soil is treated with __________ to remove organic matter in it.a) Hydrochloric acidb) Sodium oxalatec) Hydrogen peroxided) Sodium silicateAnswer: cClarification: The soil is treated with hydrogen peroxide to remove organic matter. The recommended time interval for the drainage in pipette analysis is __________a) 1/2,1,2,4,8,15, and 30 minb) 2,4,6,12,20 and 30 minc) 1,8,16,24 mind) 24,30,34,40,46 minAnswer: aClarification: The time interval for drainage of water in pipette analysis is ½, 1,2,4,8, 15 and 30 min.
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