Description : Silicone is a polymer of – (1) Tetraalkyl silane (2) Silicon tetrachloride (3) Dialkyl dichloro silane (4) Silane
Last Answer : (3) Dialkyl dichloro silane Explanation: In order to manufacture silicones, alkyl-substituted chlorosilanes are used as starting material. Since dimethylsilane contains -OH group at the end of ... increases. However, the hydrolysis of alkyl trichlorosilane gives very complex cross linked polymer.
Last Answer : : The chemical symbol of silicon tetachloride is SiCl4
Description : Carbon tetrachloride can be stored in a storage vessel made of (A) High silicon iron (14% Si) (B) Tin (C) Stainless steel (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Silicone is a/an (A) Monomer (B) Inorganic polymer (C) Thermoplastic material (D) A natural polymer
Last Answer : (B) Inorganic polymer
Description : Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene. (A) Nitrile (B) Silicone (C) Neoprene (D) Buty
Last Answer : (D) Buty
Description : The rate controlling step in the manufacture of silicone rubber is the (A) Polymer termination step (B) Condensation of siloxane to silicone (C) Initial hydrolysis of silicone monomer (D) None of these
Last Answer : (C) Initial hydrolysis of silicone monomer
Description : Styrene butadiene rubber (SBR) is (A) A natural rubber (B) Another name of silicone rubber (C) A synthetic polymer (D) A synthetic monome
Last Answer : (C) A synthetic polymer
Description : Styrene butadiene rubber (SBR) is (A) A natural rubber (B) A synthetic polymer (C) A synthetic monomer (D) Another name of silicone rubber
Last Answer : (B) A synthetic polymer
Description : Silicone is a/an (A) Thermoplastic (B) Inorganic polymer (C) Monomer (D) None of these
Description : The Refrigerant 'FREON' is – (1) Calcium Tetra Fluoride (2) Difluoro Dichloro Methane (3) Fluorspar and Felspar (4) Hydrofluosilicic Acid
Last Answer : (2) Difluoro Dichloro Methane Explanation: Dichlorodifluorornethane (R-12), is a colourless gas, and usually sold under the brand name Freon-12, is a chlorofluorocarbon halornethane (CFC), used as a ... 1994 clue to concerns about damage to the ozone layer. It is soluble in many organic solvents.
Description : The Refrigerant ‘FREON' is (1) Calcium Tetra Fluoride (2) Difluoro Dichloro Methane (3) Fluorspar and Felspar (4) Hydrofluosilicic Acid
Last Answer : Difluoro Dichloro Methane
Description : Which of the following rubbers has the widest service temperature range (-75 to 275°C)? (A) Butyl rubber (B) Silicon rubber (C) Nitrile rubber (D) Silicone rubber
Last Answer : (D) Silicone rubber
Description : Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? (A) Silicone rubber, teflon, porcelain and wood (B) Nickel, monel, stainless steel and graphite (C) Aluminium, copper, high silicon iron (D) Brass, cast iron, mild steel and tin
Last Answer : (D) Brass, cast iron, mild steel and tin
Description : Specify the material of construction suitable for handling concentrated HNO3 at 100°C. (A) High silicon iron, Kel-F and Teflon (B) Tin and wood (C) Silicone rubber (D) Stainless steel
Last Answer : (A) High silicon iron, Kel-F and Teflon
Description : H2SO4 (< 50% concentration) is corrosive to (A) Aluminium, mild steel, stainless steel, concrete & tin (B) Copper, cast iron & high silicon iron (14% Si) (C) Rubber (butyl and hard), silicone rubber & Teflon (D) Glass, graphite, porcelain & stoneware
Last Answer : (A) Aluminium, mild steel, stainless steel, concrete & tin
Description : What is the equation of the thermal decomposition of silane?
Last Answer : The chemical equation is:SiH4 = Si + 2 H2
Description : Dichloro diphenyl __________ is the full form of DDT (an insecticide). (A) Tetrachloroethane (B) Trichloroethane (C) Tetrachloromethane (D) Trichloromethane
Last Answer : (B) Trichloroethane
Description : DDT stands for (A) Diethyl-diphenyl-trichloromethane (B) Dichloro-diphenyl-trichloromethane (C) diphenyl-dichloro-trichloromethane (D) Dichloro-diphenyl-trichloroethane
Last Answer : (D) Dichloro-diphenyl-trichloroethane
Description : Which among the following is a covalent compound? (1) Calcium chloride (2) Magnesium fluoride (3) Sodium chloride (4) Carbon tetrachloride
Last Answer : (4) Carbon tetrachloride Explanation: Ionic compounds are made up of a metal and non-metal, and covalent compounds are made up of two nonmetals
Description : Vinegar is the trade name of - (1) acetic acid (2) chloroform (3) carbon tetrachloride (4) ethyl alcohol
Last Answer : (1) acetic acid Explanation: The trivial name acetic acid is the most commonly used and preferred IUPAC name. The systematic name ethanoic acid, a valid IUPAC name, is constructed according to the substitutive nomenclature.
Description : Name the technique used to separate water from carbon tetrachloride?
Last Answer : Water and carbon tetrachloride could be separated using a separating funnel, since the two are immiscible and heavier carbon tetrachloride forms the lower layer.
Description : DDT is prepared by the reaction of chlorobenzene with (in the presence of conc. H2SO4) (a) Chloral (b) Chlorine (c) Chloroform (d) Carbon tetrachloride
Last Answer : Chloral
Description : Which of the following compounds has maximum dipole moment? (a) p-Dichlorobenzene (b) m-Dichlorobenzene (c) o-Dichlorobenzene (d) Carbon tetrachloride
Last Answer : o-Dichlorobenzene
Description : Which of the following molecules will decolorize bromine in carbon tetrachloride most readily? (a) 1,2-Dimethylcyclopropane (b) Cyclopentane (c) 1,2-Dimethylcyclobutane (d) Cyclohexane
Last Answer : 1,2-Dimethylcyclopropane
Description : Which of the following will give a negative test when treated with bromine in carbon tetrachloride? (a) Butane (b) 2-Butene (c) 1,3-Butadiene (d) 2-Butyne
Last Answer : Butane
Description : . In which solvent are alkenes most soluble? (a) water (b) ethyl alcohol (c) ammonia (d) carbon tetrachloride
Last Answer : carbon tetrachloride
Description : Which of the following compounds have highest dipole moment? (a) dichloromethane (b) chloroform (c) chloromethane (d) carbon tetrachloride
Last Answer : dichloromethane
Description : Which of the following compounds have lowest dipole moment? (a) carbon tetrachloride (b) chloromethane (c) dichloromethane (d) chloroform
Description : Which of the following would you expect to have the highest boiling point? w) methane x) carbon tetrachloride y) chloroform z) chloromethane
Last Answer : ANSWER: X -- CARBON TETRACHLORIDE
Description : Which of the following would be least soluble in water? w) Carbon Tetrachloride x) Sodium Oxide y) Magnesium Bromide z) Potassium Phosphate
Last Answer : ANSWER: W -- CARBON TETRACHLORIDE
Description : Which one of the following molecules exhibits resonance? w) Carbon Tetrachloride x) Carbonate ion y) Sulfur Dichloride z) Phosphorus Tribromide
Last Answer : ANSWER: X -- CARBONATE ION
Description : This noncombustible liquid in its dry form is noncorrosive to common metals except aluminum. About 90% of all of this material which is manufactured goes into the production of chlorofluorocarbons. ... substance: w) carbon tetrachloride x) methylene chloride y) hydrogen chloride z) methyl fluoride
Description : Which among the following is a covalent compound ? (1) Calcium chloride (2) Magnesium fluoride (3) Sodium chloride (4) Carbon tetrachloride
Last Answer : Carbon tetrachloride
Description : What is the physical condition of silicone ?
Last Answer : The physical state of silicon is a dark gray solid.
Description : What is the compatibility of silicone ?
Last Answer : Silicon valence 4 .
Description : What is the symbol of silicone ?
Last Answer : Si is the symbol of silicon .
Description : Is carbon tetrachloride a molecular or ionic?
Last Answer : Carbon tetrachloride is a covalent compound.
Description : Is carbon tetrachloride element?
Last Answer : Carbon tetrachloride is a chemical compound.
Description : Is sulphur soluble in carbon tetrachloride?
Last Answer : Sulfur is soluble in carbon tetrachloride.
Description : The Green House Effect is caused by an excess of _____ A. Carbon dioxide B. Carbon monoxide C. Carbon tetrachloride D. None of the above
Last Answer : ANSWER: A
Description : Consider the following chemicals: 1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene The chemicals used as dry cleaning agent(s) is/are (a) 1 only (b) 2 only (c) 1, 2 and 4 only (d) 1, 2, 3 and 4
Last Answer : Ans:(c)
Description : If a small electric motor has been submerged in saltwater for a short period of time, you should _____________. A. send it ashore for rewinding B. rinse it with warm freshwater and bake it dry ... and bake with internal heat D. clean it with carbon tetrachloride and blow it out with compressed air
Last Answer : Answer: B
Description : To repair a small electrical motor that has been submerged in saltwater, you should _____________. A. wash it with fresh water and apply an external source of heat B. renew the windings ... electrical parts with a carbon tetrachloride cleaning solvent and then blow dry the motor with compressed air
Last Answer : Answer: A
Description : Which of the following represents the accepted method of cleaning dust and foreign particles from electrical equipment while limiting damage to electric components? A. Carefully wiping off the components ... the components. D. Using carbon tetrachloride as a cleaning solvent to clean the components.
Last Answer : Answer: C
Description : What is the commercial name of acety- lene tetrachloride?
Last Answer : Westrol
Description : Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is (A) Ni (B) V2O5 (C) Fe (D) Aluminium triethyl combined with titanium tetrachloride
Last Answer : (D) Aluminium triethyl combined with titanium tetrachloride
Description : The commonly used solvent in supercritical extraction is (A) Methyl ethyl ketone (B) Water (C) Carbon tetrachloride (D) Carbon dioxide
Last Answer : (D) Carbon dioxide
Description : Centrilobular necrosis is associated with C A. Halothane B. Thorazine C. Carbon tetrachloride D. None of these
Description : The liquid used for the washing of coal in an industrial coal washery is a mixture of water and (A) Carbon tetrachloride (B) Sand (40%) (C) Mineral oil of high viscosity & specific gravity (1.6) (D) None of these
Last Answer : (B) Sand (40%)
Description : A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then ... new manometer reading will be __________ cms. (A) 17 (B) 42 (C) 84 (D) 1.8
Last Answer : __________ cms. (A) 17