Description : Pure water is bad conductor of electricity because it is – (1) feebly ionized (2) not volatile (3) a very good solvent (4) a non-polar solvent
Last Answer : (1) feebly ionized Explanation: Pure water is a covalent compound. It exists as simple discrete molecules and have a simple molecular structure. Hence, it does not exist as ions. Therefore, ... into hydrogen ions and hydroxide ions. The presence of mobile ions enables it to conduct electricity.
Description : In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament ... is used for __________ fibres. (A) Polythene (B) PVC (C) Rayon (D) Polyvinyl acetate
Last Answer : (B) PVC
Description : If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is (A) L/G (B) G/L (C) Always < 1 (D) None of these
Last Answer : (A) L/G
Description : Pure water is bad conductor of electricity because it is (1) feebly ionized (2) not volatile (3) a very good solvent (4) a non-polar solvent
Last Answer : feebly ionized
Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.
Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen
Description : For constructing a terrazzo floor, Pick up the incorrect statement from the following: (A) A base course is prepared as in cement concrete flooring (B) A 32 mm thick layer of cement concrete ... final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
Last Answer : Answer: Option B
Description : The most important constituent of an oil paint, is (A) Thinner (B) Vehicle (C) Pigment (D) All the above
Last Answer : Answer: Option D
Description : __________ is a non volatile film forming constituent of a paint. (A) Thinner (B) Dryer (C) Drying oil (D) None of these
Last Answer : (C) Drying oil
Description : A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further 18 g of water is added to this solution. The new vapour pressure ... K. Calculate (i) the molecular mass of solute and (ii) vapour pressure of water at 298 K -Chemistry
Last Answer : For a very dilute solution ∴ Molecular mass, MB = 34 g/mol.
Description : What is the name the solvent in an emulsion paint?
Last Answer : a
Description : Paint is the mixture of ……. a) Binder, Pigment & Solvent* b) Binder & Pigment c) Binder & Solvent d) None of the above
Last Answer : a) Binder, Pigment & Solvent*
Description : Fussain (A) Is friable, charcoal like substance (B) Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal (C) Is non-coking, but when blended with highly coking ... its swelling and produces high strength coke on carbonisation (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Why is camphor called volatile substance ?
Last Answer : When heat is applied to a solid, it is directly from the solid to the gaseous state called their volatile substance. When camphor is heated, it does not turn into a liquid, but directly evaporates camphor , hence camphor is a volatile substance.
Description : Why is sodium carbonate added during solvent extraction?
Last Answer : It is usually added during an extraction in order to make thesolution alkaline. Often times, this aids in the efficiency of theextraction.
Description : In extractive distillation, solvent is (A) Added to alter the relative volatility of the mixture (B) Of high volatility (C) Present in overhead stream (D) Of high viscosity to give high tray efficiency
Last Answer : (A) Added to alter the relative volatility of the mixture
Description : In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated. (A) Molecular (B) Azeotropic (C) Extractive
Last Answer : (C) Extractive
Description : For long flame and easy ignition, the coal used should have (A) High volatile matter (B) Low ash (C) High calorific value (D) High ash
Last Answer : (A) High volatile matter
Description : Vehicle tyres are inflated properly – (1) to ensure smooth running. (2) to allow the vehicle to take more load. (3) to avoid skidding and to minimize friction (4) to go fast and save fuel.
Last Answer : (3) to avoid skidding and to minimize friction Explanation: Under-inflated tyres create more friction with the road, increasing fuel consumption by up to ten per cent and are prone to skidding on ... or slippery surfaces. Low pressures also lead to premature wear and risk of tyre blowout or bulging.
Description : Indicate which of the statement is incorrect with regard to coning of Wheels a)coning of wheels help the vehicle to negotiate a curve smoothly b) It helps in smooth riding c) It increases ... enables the outer wheel of vehicle to take a longer distance e) it restricts the swaying of vehicles
Last Answer : c) It increases wear and Tear of wheel flanges*
Description : Vehicle tyres are inflated properly (1) to ensure smooth running. (2) to allow the vehicle to take more load. (3) to avoid skidding and to minimise friction (4) to go fast and save fuel.
Last Answer : to avoid skidding and to minimise friction
Description : Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is (A) 0.225 m (B) 0.589 m (C) 1.250 m (D) None of these
Description : Linseed oil is used in paints as (A) Thinner (B) Vehicle (C) Base (D) Drier
Description : Turpentine oil is used in paints as (A) Thinner (B) Vehicle (C) Base (D) Drier
Last Answer : Answer: Option A
Description : 13.a) What is solute and solvent in aerated drinks? b) Given a solution of substance 'A' how will you test whether it is saturated or unsaturated with respect to 'A' at the given temperature. -Chemistry
Last Answer : (a) No solute and solvent is available in aerated drinks. (b) in the given solution add small amount of solute A, if A dissolved a daydream a transparent solution is formed then it is an unsaturated solution and if A doesn't dissolved and a precipitate is formed then it's a saturated solution
Description : Application of HPLC includes? A. Detection of functional groups in organic compounds B. Determination of molecular mass C. Separation of volatile compounds D. Impurity profiling
Last Answer : D. Impurity profiling
Description : lass Ionomer Cement sets because of,** A. Acid-Base reaction B. Addition polymerisation reaction C. Growth of glass crystals D. Slip plane locking E. Solvent evaporation
Last Answer : A. Acid-Base reaction
Description : Whats an easy way to get thick hair smooth and straight?
Last Answer : answer:Use Chi Silk Infusion before you blow-dry or straighten it. It helps keep your hair silky smooth and also helps to keep the frizz down. I've been straightening my hair for years and I live off ... Fructis - Triple Nutrition as well. It keeps your hair healthy as well as soft and smooth. :)
Description : It is always provided on each end of the cutter bar to regulate the height of cut and to provide easy and smooth sliding of the cutter bar on the land. b. Plate c. pitman d. None of above
Last Answer : Ans- b. shoe
Description : The base of an electric iron is brightly polished mainly - (1) to make it smooth and frictionless (2) to make it rust-proof (3) to reduce heat loss by radiation (4) to make it more durable
Last Answer : (3) to reduce heat loss by radiation Explanation: Polished surfaces are poor radiators of heat. So loss of heat on that account is reduced and the electric iron remains hotter than otherwise.
Description : The component labeled 'CR1' in the circuit shown in the illustration __________________. EL-0085 A. varies its anode/cathode polarity depending on 'RL' current B. rectifies the varying voltage from the ... reactance to smooth ripple D. establishes a constant reference voltage for the base of 'Q1'
Last Answer : Answer: D
Description : Substance added to ore to remove impuri- ties is known as?
Last Answer : Flux
Description : When a substance is added to a liquid medium which inhibits the growth of unwanted bacteriaand favors the growth of wanted bacteria, it is known as A- differential medium B- enriched medium C- enrichment medium D-selective medium
Last Answer : enrichment medium
Description : Thermosetting materials (A) Are cross-linked molecules (B) Soften on application of heat (C) Are solvent soluble (D) None of these
Last Answer : (A) Are cross-linked molecules
Description : Thermoplastic materials (A) Do not soften on application of heat (B) Are heavily branched molecules (C) Are solvent insoluble (D) None of these
Last Answer : (D) None of these
Description : For a typical car insurance policy, what type of insurance would pay for paint/body damage (est.
Last Answer : Liability.
Description : From the following which method is used to guide the AGV. a.Wire guided b.Paint strip c.Self guided vehicle d.All of the above
Last Answer : d.All of the above
Description : Do car manufacturers check for lead in the paint used on the vehicle?
Last Answer : With the EPA locking in the restrictions of lead paint usage, automobile manufacturers are not allowed to use it on their cars. However, many classic car enthusiasts still use paints that have ... original body paint, should be checked for lead based paint and kept from children during refinishing.
Description : While painting with Aluminium paint, a little quantity of ………..shall be added to the paint while doing the first coat to distinguish it from the second coat a) little blue paint* b) lamp black c) red paint d) green paint
Last Answer : a) little blue paint*
Description : While painting with red oxide paint, a little quantity of ………..shall be added to the paint while doing the first coat to distinguish it from the second coat a) little blue paint b) lamp black* c) red paint d) green paint
Last Answer : b) lamp black*
Description : Give reason why glycerine is added in throat paint.
Last Answer : Glycerine is added in throat paint because: It has mild sweet taste and viscous in nature, it adhere to inflamed mucous membrane, this increases the contact time of drug with inflamed mucous membrane giving maximum therapeutic benefit.
Description : What is that yellow-orange, waxy substance that I find on my car's paint all the time, in the form of neat little spots?
Last Answer : This seems to have been asked on various other sites in the last 2 years or so, i have no clue what it could be but here a link from one of them . Shame its askville maybe you ... SimilarQuestions.do?req=rusty-water-spots-car-paint. Runs and washes brain in bleach to remove askville from my memory
Description : Is a latex paint body suit easy to wash off?
Last Answer : Latex paint bodysuits are designed to be washed off easy. It is suggested that an undergarment is worn.
Description : The substance that is added to make natural rubber strong and more bouncy is – (1) Polythene (2) Sponge (3) Sulphur (4) Chlorine
Last Answer : (3) Sulphur Explanation: Vulcanization is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulfur or other equivalent "curatives ... individual polymer chains. Vulcanized materials are less sticky and have superior mechanical properties.
Description : The substance that is added to make natural rubber strong and more bouncy is (1) Polythene (2) Sponge (3) Sulphur (4) Chlorine
Last Answer : Sulphur
Description : When heat is added to or removed from a substance it may change its state. What state will most likely result if heat is added to a liquid?
Last Answer : A gas.
Description : The substance which is added to glass to increase its hardness?
Last Answer : Borax
Description : The substance added to lighten the colour of jaggery or sugar during its manufacture is
Last Answer : hydrosol or sodium bi sulphate.