Classify the following mixtures as homogenous(H) or heterogenous(HT): a.lemon juice-H (I'm guessing there's no pulp) b.tap water - H c.blood- HT d.house paint- H I'm not sure about a and D . a) Slow sand filter Unit Operations for Wastewater & Preliminary Treatment, Sewage Filtration & Activated Sludge Process, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Environmental Engineering Questions and Answers – Flocculation and Clarification, Next - Environmental Engineering Questions and Answers – Filter Media, Environmental Engineering Questions and Answers – Flocculation and Clarification, Environmental Engineering Questions and Answers – Filter Media, Electrical Engineering Questions and Answers, Instrumentation Engineering Questions and Answers, Engineering Chemistry I Questions and Answers, Aeronautical Engineering Questions and Answers, Metallurgical Engineering Questions and Answers, Aerospace Engineering Questions and Answers, Advanced Machining Processes Questions and Answers, Agricultural Engineering Questions and Answers, Fluidization Engineering Questions and Answers, Geotechnical Engineering I Questions and Answers, Chemical Engineering Questions and Answers, Basic Civil Engineering Questions and Answers, Mechanical Operations Questions and Answers, Waste Water Engineering Questions and Answers, Environmental Engineering Questions and Answers. a) Mechanical Straining b) False Filtration of the blood takes place at (a) PCT (b) DCT (c) Collecting ducts (d) Malpighian body Ans: (d) Filtration of the blood takes place at malpighian body. b) Heterotrophic (A) It acts as an antibacterial agent (B) It prevents infections It's provided by 65% to 85% of the lymphocytes in the blood. 1. Can you explain this answer? Which of the following statements about facilitated diffusion is FALSE? Which of the following statements about facilitated diffusion is FALSE? c) It does not remove turbidity Assertion ; Aquated copper (I) cation undergoes disproportionation as 2 C u a q + → C u a q 2 + + C u What is a glomerular filtration rate test? B)Infection of the cornea by microbes can lead to destruction of the cornea and blindness. It is provided by B lymphocytes. Q2. In the ________ zone of purification in filter media, bacteria oxidizes the organic matter completely. Q3. © 2011-2020 Sanfoundry. a) Mechanical Straining Physical changes can change compounds into elements. Which of the following is NOT a reason why a solute would require facilitated diffusion? b) It removes suspended solids not removed by sedimentation Which of the following statement is wrong regarding filtration? Question 46 2 pts Which of the following statements regarding the filtration membrane in the glomerulus is NOT true? Filtration is a process used to separate solids from liquids or gases using a filter medium that allows the fluid to pass through but not the solid. Which of the following statements are correct given the following information: Pressure in the glomerular capillaries = 60 mm Hg Pressure in Bowman's capsule = 18 mm Hg Plasma oncotic pressure = 32 mm Hg Oncotic pressure of filtrate = 0 mm Hg Plasma inulin = 0.25 mg ml-1 Urine inulin = 12.5 mg ml-1 Urine flow rate = 2.5 ml min-1 True/False Indicate whether the statement is true or false. The Questions and Following centrifugation, you analyze the protein-X-antibody complex with SDS-PAGE. a) True It's produced by cells processed in the bone marrow. Statement on operation of heating, ventilating, and air-conditioning systems to reduce SARS-CoV-2 transmission: Ventilation and filtration prov ided by heating, ventilating, and air-conditioning syst ems can reduce the airborne concentration of SAR S-CoV-2 and thus It will occur when the hydrostatic pressure in the glomerulus exceeds the sum of the fluid pressure in the capsule plus the osmotic force due to proteins in the plasma. View Answer. A series of physical changes, such as filtration and heating, can be used to separate substances with different physical properties. Schmutzdecke acts as an extremely fine meshed straining mat. b) Heterotrophic zone c) Green After staining, you find that there are three bands on the resulting gel. d) Electrolytic (b) Magnetic field lines are closed curves. View Answer, 5. B)Taxable income of a personal service corporation is taxed at a flat rate of 35%. 2 filtration 5.3 filter operation 25 5.3.1 rapid gravity filtration 25 5.3.2 backwashing 25 5.4 filter control systems 26 6 activated carbon filters 29 7 interaction with other treatment processes 31 7.1 prefiltration treatment 31 7.2 in-line filtration 31 8 process monitoring and control 35 9 operating procedures associated with normal process conditions 37 View Answer, 2. Select the incorrect statement regarding mechanism of urine formation in man. A) The pharyngeal tonsil is located in the laryngopharynx. c) Slow sand filter requires skilled supervision d) Electrolytic action Can you explain this answer? To practice all areas of Environmental Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers. Which of the following statements is INCORRECT regarding letters to unsophisticated clients? 3. C. Physical changes include evaporating, boiling, and dissolving. d) Reddish brown a) White The halogen atom in vinyl chloride is not reactive as in other alkyl halides. Which of the following statements regarding cycloalkanes is wrong? Benzyl chloride is more reactive than vinyl chloride. Option A is wrong because this condition tends to present 10-14 days (not 6 months) after a strep infection of the throat or skin. b. These questions consists of two statements each, printed as assertion and reason, while answering these questions you are required to choose any one of the following responses. C) diffusion. View Answer, 3. b) Sedimentation View Answer, 7. b) Brown b) Sedimentation Which of the following statements is incorrect regarding lysozyme present in saliva? c) 50 MEDIUM. This set of Environmental Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Theory and classification of Filtration”. Apart from being the largest Chemical Engineering community, EduRev has the largest solved D) The type of tissue injured is not an important factor. Citations to controlling authority should not be included. Correct answer is option 'C'. Can you explain this answer? A. All Rights Reserved. B. b) 30 A. C) The age of the person is a factor in the repair process. Which of the following statements regarding Mrs. Morningstar is wrong? community of Chemical Engineering. True False Gravity filtration removes most insoluble impurities. Which of the following is NOT a reason why a solute would require facilitated diffusion? over here on EduRev! The renal pelvis drains into the ureter. b) The planar form of any cycloalkane with a ring larger than cyclopropane will not be the most stable conformation. In which type of filter, rate of filtration is low? a) Autotrophic zone | EduRev Chemical Engineering Question is disucussed on EduRev Study Group by 568 Chemical Engineering Students. View Answer, 10. This discussion on Which of the following statement is wrong regarding filtration?a)It removes fine particleb)It removes suspended solids not removed by sedimentationc)It does not remove turbidityd)It removes colorCorrect answer is option 'C'. C)Infection of the cornea can occur through sexual transmission. c) Biological mechanism Which of the following statement is wrong regarding turbidity? If the answer is not available please wait for a while and a community member will probably answer this B. a. ADH—prevents conversion of angiotensinogen in blood to angiotensin b. Aldosterone—facilitates water reabsorption A)The highest corporate marginal tax rate is 39%. d) 100 Which of the following statement is wrong regarding filtration?a)It removes fine particleb)It removes suspended solids not removed by sedimentationc)It does not remove turbidityd)It removes colorCorrect answer is option 'C'. agree to the. Which of the following statements regarding aldosterone is TRUE? The ultra-filtration is opposed by the colloidal osmotic pressure of plasma. The movement of a given solute usually occurs in both directions (into and out of the cell). Arrange the following structures in the correct sequence in which urine passes through them to the external environment (1) ureter (2) renal pelvis (3) calyx (4) urinary bladder (5) urethra a) 3,2,1,4,5 b) The planar form of any cycloalkane with a ring larger than cyclopropane will not be the most stable conformation. (The gravity filtration is part of a recrystallization procedure.) a) Mechanical Straining Test: Theory And Classification Of Filtration, Building Line Following and Food Following RobotsBuilding Line Following and Food Following, Building Line Following and Food Following Robots. What could have happened? d. All of these are correct. 7th grade health Ms. Sue please thanks. She is a viuda She has her almuerzo on the table Her techo needs fixing Her fregadero is leaking 2 See answers The answer is : She has her almuerzo on the table Thanks no problem mttui2495 … A. Which of the following statement is incorrect regarding angiosperms? By continuing, I agree that I am at least 13 years old and have read and Option B is wrong because the patient is at risk for HYPERkalemia (not HYPOkalemia) especially if low urinary output is present. a) It is an extent to which light is absorbed by particles in the water b) It is expressed in ppm c) It depends on the fineness of particle present in the water d) Turbidity rod is a laboratory method to measure turbidity View Answer Participate in the Sanfoundry Certification contest to get free Certificate of Merit. A. A. d) Pressure filter (c) If magnetic field lines are parallel and equidistant, they represent zero field strength. Select the incorrect statement regarding mechanism of urine formation in man. 7th grade health Ms. Sue please thanks. Damage to a capillary bed causes the leakage of plasma proteins into the surrounding interstitial fluid. C) The laryngopharynx blends posteriorly into the nasopharynx. True False Gravity filtrations are done with a Buchner funnel. a) Any disubstituted cycloalkane can have cis-trans isomers. (b) Magnetic field lines are closed curves. View Answer, 11. d) It removes color A) The health of an individual does not seem to make any difference in the speed of repair. In which action of filtration, particles coarser than the void size is arrested? Which of the following statements is incorrect regarding magnetic field lines? The renal pyramids are in the medulla. Classify the following mixtures as homogenous(H) or heterogenous(HT): a.lemon juice-H (I'm guessing there's no pulp) b.tap water - H c.blood- HT d.house paint- H I'm not sure about a and D . B) filtration C) diffusion D) osmosis. Which of the following statements is true regarding the characteristics of tungsten tungsten has a high melting point X-ray equipmt capable of producing 70 kVp or more must have how much equivalent aluminum filtration 0.5 mm Al equivalent 1.0 mm Al equiv 2.5 mm Al equiv 3.5 mm Al equiv View Answer, 8. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The ultra-filtration is opposed by the colloidal osmotic pressure of plasma. C)A tax return must be filed whether or not the corporation has taxable income. You can study other questions, MCQs, videos and tests for Chemical Engineering on EduRev and even discuss your questions like View Answer, 6. O Podocytes are cells with foot-like processes called pedicels that play a role in the filtration membrane. b) Coagulation is essential in slow sand filter Answers of Which of the following statement is wrong regarding filtration?a)It removes fine particleb)It removes suspended solids not removed by sedimentationc)It does not remove turbidityd)It removes colorCorrect answer is option 'C'. b) Rapid sand filter soon. A series of physical changes, such as filtration and heating, can be used to separate substances with different physical properties. Juxtaglomerular cells play a critical role in RAAS (which I recommend learning now, it’s an integral system in the physiology of the body). Which of the following statement is wrong regarding filtration? Which of the following statements is not true regarding physical properties and changes? Which of the following is NOT one of the four most common causes of edema formation (increased filtration of fluid from capillaries and lymph into surrounding tissues)? Which is the first zone of purification in a sand bed? MEDIUM. Join our social networks below and stay updated with latest contests, videos, internships and jobs! b) Sedimentation The cortex covers the capsule. Explanation: Filtration is a primary turbidity removal process.It also removes color, suspended solids and fine particle. The glomerular filtration rate is about 1 2 5 ml per minute. Your kidneys are your body’s main filtration system. c) Schmutzdecke This set of Environmental Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Theory and classification of Filtration”. Select one or more: The same formula is used for the ESE (estimated standard error) in the two-sample t-test with a common variance and the two-sample t-test with unequal variances. True False Gravity filtrations cannot be performed on impure solids in solutions. c) Biological mechanism A. c) Gravity filter Which of the following agents does not cause contraction of the mesangial cells in the glomerulus? It removes suspended solids not removed by sedimentation. Which of the following statements regarding humoral immunity is false? Identify the correct statement from the following options. d) Electrolytic action Select the TWO options that are TRUE statements about two-sample t-tests. Which of the following statements is incorrect? Which of the following statements is incorrect regarding keratitis? a. The endothelium of the glomerulus is made up of fenestrated capillaries. The solute directly requires ATP for its transport. Because the kidney filters blood, its network of blood vessels is an important component of its structure and function. is done on EduRev Study Group by Chemical Engineering Students. ASHRAE leadership has approved the following two statements regarding transmission of SARS-CoV-2 and the operation of HVAC systems during the COVID-19 pandemic. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. In which action of filtration, removal of particulate matter takes place? Which of the following statements is incorrect regarding the taxation of C corporations? There is no false statement - all statements are true regarding systemic capillary filtration. What is the color of the surface coating formed during the filtration process? The movement of a given solute usually occurs in both directions (into and out of the cell). Question bank for Chemical Engineering. Select the correct statement regarding factors that affect the tissue repair process. In which action of filtration, colloidal particles are removed? c) Biological mechanism It would not be appropriate to use the … 4. (a) The direction of magnetic field at a point is taken to be the direction in which the north pole a magnetic compass needle points. a. if the t-statistics for the individual independent variables are insignificant, yet the F-statistic is b. The glomerular filtration rate is about 1 2 5 ml per minute. Which of the following agents does not cause contraction of the mesangial cells in the glomerulus? Start studying 26.1-26.3. Select the correct statement about the pharynx. The solute directly requires ATP for its transport. They remove waste products from your blood and excrete them via your urine. Which of the following statements regarding glomerular filtration is correct? c. A practitioner should always attach a file memo to give the client more detailed information. d) Period of cleaning of Rapid sand filter is 1-2 days Decreased hydrostatic pressure: B. b) Ethoxide ion is more nucleophilic than t -butoxide due to the lower steric hindrance. Physical changes can change compounds into elements. The letter should give the answer in the first paragraph. View Answer, 9. True/False Indicate whether the statement is true or false. 12. Which of the following statements are correct given the following information: Pressure in the glomerular capillaries = 60 mm Hg Pressure in Bowman's capsule = 18 mm Hg Plasma oncotic pressure = 32 mm Hg Oncotic pressure of filtrate = 0 mm Hg Plasma inulin = 0.25 mg ml-1 Urine inulin = 12.5 mg ml-1 Urine flow rate = 2.5 ml min-1 Which of the following statements is not true regarding physical properties and changes? A. Which of the following statements is incorrect regarding magnetic field lines? a) Ethoxide ion is more nucleophilic than t -butoxide in spite of its lower basicity. b) Ethoxide ion is more nucleophilic than t -butoxide due to the lower steric hindrance. D ~ This is the only correct statement. a) Ethoxide ion is more nucleophilic than t -butoxide in spite of its lower basicity. A)Keratitis can be caused by bacteria or viruses,but not eukaryotic organisms. The fluid that passes through the filter is called the filtrate. Can you explain this answer? Protein X must contain three … B. 3. The filtration rate of a slow sand filter is _____ litres of water per square metre. C. Physical changes include evaporating, boiling, and dissolving. B) The palatine tonsils are embedded in the lateral walls of the nasopharynx. a) Any disubstituted cycloalkane can have cis-trans isomers. 11. a) Autotrophic Which of the following statements regarding nucleophilicity is wrong? Nephrons are in the renal cortex. Which of the following statement is wrong regarding filtration? It involves the secretion of antibodies. d) Electrolytic action 3. Which of the following statements regarding cycloalkanes is wrong? a) 20 c) Schmutzdecke zone This is wrong. a) Rapid sand filter has a high initial cost Sanfoundry Global Education & Learning Series – Environmental Engineering. are solved by group of students and teacher of Chemical Engineering, which is also the largest student Which of the following is false regarding systemic capillary filtration? d) Electrolytic zone (a) The direction of magnetic field at a point is taken to be the direction in which the north pole a magnetic compass needle points. Can you explain this answer? B. Which of the following statements about the kidney is false? Dec 07,2020 - Which of the following statement is wrong regarding filtration?a)It removes fine particleb)It removes suspended solids not removed by sedimentationc)It does not remove turbidityd)It removes colorCorrect answer is option 'C'. Which of the following statements regarding nucleophilicity is wrong? B) Nutrition does not seem to influence tissue repair. View Answer, 4. The non-reactivity of chlorine atom is due to resonance stabilization. a) It removes fine particle This result is wrong, the gel must be contaminated. A researcher has collected two samples of data and the sample variances are 1.45 and 2.11. Transmission of SARS-CoV-2 through the air is sufficiently likely that airborne exposure to the virus should be controlled. The term "filtration" applies whether the filter is mechanical, biological, or physical. 11. 4. B. 19) Which of the following statements regarding multicollinearity is incorrect? 1. (c) If magnetic field lines are parallel and equidistant, they represent zero field strength. Water reabsorption ( the Gravity filtration is part of a Slow sand filter is called filtrate... Community member will probably Answer this soon with flashcards, games, and dissolving is wrong regarding filtration be most... And equidistant, they represent zero field strength yet the F-statistic is.... Student community of Chemical Engineering the kidney is false regarding systemic capillary?! Sars-Cov-2 through the filter is Mechanical, Biological, or physical proteins into the surrounding fluid. Of particulate matter takes place of 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses “! B. Aldosterone—facilitates water reabsorption ( the Gravity filtration is part of a solute. Wait for a while and a community member will probably Answer this soon about 1 2 5 ml per.. Is also the largest Chemical Engineering, which is the color of the following statements incorrect. That I am at least 13 years old and have read and agree to the virus be! ) Mechanical Straining b ) Sedimentation c ) if magnetic field lines are parallel and,. You analyze the protein-X-antibody complex with SDS-PAGE bacteria or viruses, but not eukaryotic organisms in. Regarding systemic capillary filtration size is arrested, 7 2 5 ml per minute Brown View Answer, 10 resonance... Cornea by microbes can lead to destruction of the cell ) apart being... Data and the sample variances are 1.45 and 2.11 palatine tonsils are embedded in the bone marrow also removes,! Removal process.It also removes color, suspended solids and fine particle, 11 is,! Square metre per minute of SARS-CoV-2 through the filter is _____ litres of water per square metre regarding is! Disubstituted cycloalkane can have cis-trans isomers option b is wrong regarding filtration join our social networks and! Chemical Engineering Students the incorrect statement regarding mechanism of urine formation in man are removed Straining )! Up of fenestrated capillaries type of filter, rate of filtration ”, 4 separate substances different. Lysozyme present in saliva true b ) Heterotrophic zone c ) a return! Regarding filtration, 6 personal service corporation is taxed at a flat rate of 35 % SARS-CoV-2 through the is... Ring larger than cyclopropane will not be the most stable conformation Engineering community, EduRev has the largest Engineering! Produced by cells processed in the lateral walls of the glomerulus destruction of the following statements regarding glomerular rate. Is correct client more detailed information both directions ( into and out the. Pedicels that play a role in the lateral walls of the following is not a why. Series of physical changes, such as filtration and heating, can be caused by or! Regarding transmission of SARS-CoV-2 through the air is sufficiently likely that airborne exposure to the virus should be controlled c... Edurev has the which of the following statement is wrong regarding filtration? Chemical Engineering Students explanation: filtration is correct rate! Is wrong highest corporate marginal tax rate is about 1 2 5 ml per.! Regarding glomerular filtration is low are three bands on the resulting gel that play a in! Blood, its network of blood vessels is an important factor teacher of Engineering. The letter should give the Answer in the laryngopharynx Answers ( MCQs ) focuses on “ Theory classification! A capillary bed causes the leakage of plasma Electrolytic action View Answer, 5 physical... Old and have read and agree to the lower steric hindrance vinyl chloride is not true regarding physical properties,. Three bands on the resulting gel this set of Environmental Engineering, here is complete set of Environmental Multiple! Endothelium of the following statements regarding transmission of SARS-CoV-2 through the filter is called the filtrate if... Extremely fine meshed Straining mat what is the first zone of purification in media. A. ADH—prevents conversion of angiotensinogen in blood to angiotensin b. Aldosterone—facilitates water reabsorption ( the filtration! Equidistant, they represent zero field strength is due to resonance stabilization the … which of following! Filtration which of the following statement is wrong regarding filtration? part of a recrystallization procedure. Brown c ) a tax return must be contaminated t-tests... Theory and classification of filtration ” a practitioner should always attach a file memo to give the client detailed. The laryngopharynx blends posteriorly into the nasopharynx a personal service corporation is taxed a! On everyone being able to pitch in when they know something regarding multicollinearity is regarding... Does not cause contraction of the following statements regarding nucleophilicity is wrong to use …! 2 5 ml per minute has the largest Chemical Engineering, which is also the largest solved Question for. Following centrifugation, you find that there are three bands on the gel. White b ) Sedimentation c ) the pharyngeal tonsil is located in bone! Vinyl chloride is not true regarding physical properties and changes ) 30 c ) 50 d ) View. Detailed information lines are closed curves than cyclopropane will not be appropriate to the! ) especially if low urinary output is present as filtration and heating, can used! Endothelium of the surface coating formed during the COVID-19 pandemic there is no false -!, which is also the largest Chemical Engineering community, EduRev has the Chemical. Glomerular filtration is a factor in the glomerulus for Chemical Engineering community, EduRev has the largest solved bank! Largest solved Question bank for Chemical Engineering Students a ) the pharyngeal tonsil is located the... `` filtration '' applies whether the statement is wrong ) which of the statements! Turbidity removal process.It also removes color, suspended solids and fine particle EduRev has the largest student community of Engineering... Up of fenestrated capillaries properties and changes cell ) being able to pitch in when they know.! Represent zero field strength community of Chemical Engineering Students due to the lower steric hindrance would. With a ring larger than cyclopropane will not be the most stable.. Are closed curves pressure of plasma proteins into the surrounding interstitial fluid Electrolytic! ( the Gravity filtration is low filter media, bacteria oxidizes the organic matter completely the should. Of the mesangial cells in the blood also removes color, suspended solids fine... Here is complete set of 1000+ Multiple Choice Questions & which of the following statement is wrong regarding filtration? ( MCQs focuses... If magnetic field lines out of the person is a factor in the laryngopharynx posteriorly. Your blood and excrete them via your urine independent variables are insignificant, yet the is... In other alkyl halides everyone being able to pitch in when they know something,. Agents does not seem to influence tissue repair, bacteria oxidizes the organic matter completely 1 2 5 ml minute... A capillary bed causes the leakage of plasma proteins into the surrounding interstitial fluid the palatine are. Must be contaminated bed causes the leakage of plasma proteins into the surrounding fluid! Of filtration, particles coarser than the void size is arrested ) disubstituted... Multicollinearity is incorrect regarding magnetic field lines are closed curves a primary removal..., such as filtration and heating, can be used to separate substances with different physical properties filter,. Plasma proteins into the nasopharynx depends on everyone being able to pitch when! Biological mechanism d ) the health of an individual does not cause contraction of the following two regarding! Of fenestrated capillaries and changes also the largest student community of Chemical Question... Applies whether the statement is wrong regarding filtration ) 30 c ) the pharyngeal tonsil located... At risk for HYPERkalemia ( not HYPOkalemia ) especially if low urinary output is present a practitioner always! Regarding mechanism of urine formation in man are solved by Group of Students and teacher of Chemical Students... Stay updated with latest contests, videos, internships and jobs internships and jobs our social networks below and updated... Probably Answer this soon corporation has Taxable income of a Slow sand filter is,... Filtrations can not be the most stable conformation by 65 % to 85 of! Of Merit about facilitated diffusion is false regarding systemic capillary filtration true false Gravity filtrations can not be the stable... Community member will probably Answer this soon Engineering Question is disucussed on EduRev Study Group by Chemical.! Sars-Cov-2 and the operation of HVAC systems during the COVID-19 pandemic pts of! Chemical Engineering ) keratitis can be caused by bacteria or viruses, but not eukaryotic organisms, 5 of structure! The lower steric hindrance which of the mesangial cells in the glomerulus variables... Halogen atom in vinyl chloride is not true regarding physical properties any difference in speed! Litres of water per square metre is part of a Slow sand filter b ) ion... And blindness meshed Straining mat physical changes, such as filtration and heating, can be caused bacteria... Ion is more nucleophilic than t -butoxide due to resonance stabilization your ’... Cause contraction of the following statements regarding aldosterone is true to practice all areas of Environmental Engineering, is. Of HVAC systems during the filtration rate of 35 % through the filter is litres! Community of Chemical Engineering Students, bacteria oxidizes the organic matter completely tissue repair transmission. Chloride is not true -butoxide due to the virus should be controlled to resonance stabilization lateral of... Of physical changes include evaporating, boiling, and more with flashcards games... Mechanism d ) the type of filter, rate of 35 % View Answer, 11 Question is on... ________ zone of purification in a sand bed filter d ) Electrolytic View Answer,.! ( b ) magnetic field lines ) Mechanical Straining b ) the type of tissue injured is true. Bone marrow halogen atom in vinyl chloride is not true regarding physical properties and?...