Description : What is colloidal solution?
Last Answer : Ans: A solution in which solute particles are bigger than those present in a true solution and which cannot be filtered id called a colloidal solution.
Description : Define “ Solution”
Last Answer : A homogenous mixture of different chemical substances, which has uniform chemical properties (composition) throught and shows same physical properties, is called a solution.
Description : Define freezing mixture.
Last Answer : Ans: The mixture formed by mixing ice and salt having low temperature, than the freezing point of water is called freezing mixture.
Description : Why ionic compounds are more soluble in water than others?
Last Answer : Ans: As water is a polar compound, so it dissolves ionic compounds in large amounts due to its strong interaction with ions (solute particles).
Description : Why vegetable oil is not soluble in water?
Last Answer : Ans: Water is a polar solvent and will dissolve only polar compounds whereas vegetable oil is non-polar, so as a result these are insoluble in water.
Description : How dissolution takes place by hydrogen bonding?
Last Answer : Ans: Many covalent compounds having hydroxyl group (-OH) in them are dissolved in water. In such compounds hydrogen bonds are formed between the water molecules and solute, which make them soluble in water.
Description : How dissolution takes place by hydration?
Last Answer : Ans: When an ionic compound is dissolved in water+ve hydrogen atoms of water molecule surrounds the –ve ions of solute, & -ve oxygen atoms surrounds the +ve ions and thus hold it in the dissolved form. This process is called hydration.
Description : Why water is called as “Universal Solvent”?
Last Answer : Ans: Because it can dissolve a lot of things in it, due to presence of strong cohesive forces in it and it’s ability to form H-bonding and hydration with solutes.
Description : Why solubility of gases is lesser in liquids?
Last Answer : Ans: Gas molecules are far apart, so they have weak attractive forces among their own molecules & also have less attraction for solvent molecules as well. So they have lesser solubility in liquids.
Description : What is dissolution process?
Last Answer : Ans: The process of dissolution a solute in a solvent is called dissolution.
Description : In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste
Last Answer : (D) Saturated polyeste
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 : What is a saturated solution ? What is a saturated solution ?
Last Answer : Saturated solution is the solution in which the maximum amount of liquid is dissolved at a certain temperature.
Description : Why solid NaCl starts separating out from a saturated solution of NaCl if HCl gas is passed through it?
Last Answer : Ans. HCl in the solution provides Clions. This increases the ionic product in NaCl and so the solid NaCl starts separating out.
Description : What happens HCl gas passed through saturated NaCl solution?
Last Answer : Ans. NaCl will be precipitated out.
Description : Aldehydes can be distinguished from ketones by using (a) Ammoniacal AgNO3 solution (b) Phenylhydrazine (c) Saturated NaHSO3 solution (d) Thionyl chloride
Last Answer : Ammoniacal AgNO3 solution
Description : Define the following : Un Saturated , Saturated & Super Saturated solution along with its preparation.
Last Answer : Ans :(a) Un-Saturated Solution. An unsaturated solution is a solution which contains less amount of solute than it has the capacity to dissolve at a particular temperature. If more solute is added some ... to it. Stir it till it dissolves completely , now the solution is a super saturated solution.
Description : What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell? (A) Cl2 & Na (B) Cl2 & H2 (C) O2 & H2 (D) Cl2 , H2 & NaOH solution
Last Answer : (D) Cl2 , H2 & NaOH solution
Description : What is the relative humidity for a saturated air? A. 0% B. 50% C. 100% D. cannot say
Last Answer : ANSWER : C
Description : Gas cooling as compared to water cooling of nuclear reactors (A) Cannot attain a high temperature (B) Is more efficient as gas has a higher specific heat (C) Can produce only saturated steam for feeding to power turbine (D) None of these
Last Answer : (D) None of these
Description : Air can oxidize sodium sulphite in eq. solution but cannot do so in the case of sodium arsenite. If however, air is passed through a solution containi
Last Answer : Air can oxidize sodium sulphite in eq. solution but cannot do so in the case of sodium ... Negative catalysis C. Induced catalysis D. Auto catalysis
Description : Define saturated solution. -Science
Last Answer : A saturated solution is a solution that contains the maximum amount of solute that can be dissolved under the condition at which the solution exists.
Description : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of `Ag_(2)CrO_(4) and CrO_(4)`-ion conce
Last Answer : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of ... D. `5.9xx10^(-6)` moles per litre
Description : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The sat
Last Answer : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate ... (D) X = `H_2`, Y = `Cl_2 `
Description : If a dilute solution of aqueous `NH_(3)` is saturated with `H_(2)S` then the product formed is :
Last Answer : If a dilute solution of aqueous `NH_(3)` is saturated with `H_(2)S` then the product formed is : A. `(NH_(4))_( ... (NH_(4))_(2)S_(x)` D. `NH_(4)OH+S`
Last Answer : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives ... ` D. `X=H_(2), Y=Cl_(2)`
Description : CO2 is passed into concentrated solution of NaCl, which is saturated with NH3.
Last Answer : Write balanced chemical equations : CO2 is passed into concentrated solution of NaCl, which is saturated with NH3.
Description : What (at standard pressure) is the temperature at which saturated solution of NH4Cl has a concentration of 60. g NH4Cl100. g H2O?
Last Answer : The line on the graph on The Chemistry Reference Table Gindicates a saturated solution of NH4Cl has a concentration of 60.g NH4Cl/100. g H2O at 66 degrees celcius.
Description : How can you tell when a solid and liquid solution is saturated?
Last Answer : It is not possible to dissolve another amount of solute, at a given temperature and pressure.
Description : What forms when a solvent evapourates from a saturated solution?
Last Answer : Crystal
Description : 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is: (A) 0.4 (B) 0.25 (C) 0.2 (D) 0.175
Last Answer : (C) 0.2
Description : During crystallisation, formation of crystal can occur in __________ solution only. (A) Saturated (B) Supersaturated (C) Under-saturated (D) All (A), (B) and (C)
Last Answer : (B) Supersaturated
Description : Leidenfrost point is a term concerned with the (A) Condensation of the saturated vapor on a cold surface (B) Concentration of a corrosive solution by evaporation (C) Heat transfer between two highly viscous liquids (D) Boiling of a liquid on a hot surface
Last Answer : (D) Boiling of a liquid on a hot surface
Description : In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because (A) Temperature is less (B) Total pressure is less (C) Mixing of steam ... not so intimate as to result in equilibrium condition (D) Saturated steam is used for steam distillation
Last Answer : (C) Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition
Description : In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface. (A) Nucleate (B) Local (C) Pool (D) Saturated
Last Answer : (B) Local
Description : In case of water logged lands a. The soil ports are saturated within a depth of 1 m b. The soil ports are situated within a depth of 60 cm c. The soil ports are situated within a depth of 40 cm b. D.The soil ports are saturated up to the root zone of the crop
Last Answer : D.The soil ports are saturated up to the root zone of the crop
Description : Consider the following statements: 1. For a saturated soil, Skempton's B-parameter is nearly equal to unity. 2. For an undisturbed sensitive clay, the stress-strain curve shows a peak. 3. Interlocking contributes significantly to the shearing ... 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only
Last Answer : (a) 1, 2 & 3
Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.
Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION
Description : What is saturated hydrocarbon ?
Last Answer : Hydrocarbons that have a carbon-carbon single bond are called saturated hydrocarbons.
Description : What is a free chain saturated hydrocarbon ?
Last Answer : Free chain organic compounds consisting of only carbon or hydrogen, consisting of only carbon-carbon one-bond ( C-C) and / or carbon-hydrogen one bond ( C-H) , are called free-chain saturated hydrocarbons or paraffin.
Description : Air is said to be saturated when - (1) it contains maximum content of water vapour (2) its pressure is minimum (3) its thickness is maximum (4) it blows over the barren land
Last Answer : (1) it contains maximum content of water vapour Explanation: When a volume of air at a given temperature holds the maximum amount of water vapour, the air is said to be saturated. Mr is said ... 100 percent or is saturated, moisture will condense, mean-ing the water vapor changes to liquid vapor.
Description : Saturated hydrocarbons are called - (1) Alkynes (2) Alkenes (3) Alkanes (4) All of the above
Last Answer : (3) Alkanes Explanation: Carbon compounds which contain just carbon and hydrogen are called hydrocarbons. Among these, the saturated hydrocarbons are called alkanes. The unsaturated hydrocarbons which contain one or more double bonds are called alkenes.
Description : Which gas is used for converting vegetable oils into saturated fats? (1) H2 (2) O2 (3) Cl2 (4) SO2
Last Answer : (1) H2 Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. ... oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds).
Description : Compounds of carbon having double or triple bonds between their carbon atoms are called (1) Saturated compounds (2) Unsaturated compounds (3) Reactive compounds (4) None of the above
Last Answer : (2) Unsaturated compounds Explanation: Compounds of carbon, which are linked by only single bonds between the carbon atoms are called saturated compounds. Compounds of carbon having double or triple bonds between their carbon atoms are called unsaturated compounds.
Description : Which of the following statements is false about cyclohexane? (a) It is a saturated cyclic hydrocarbon (b) All C–C–C bond angles are 109°28' (c) It is very unstable, strained compound. (d) It can exist in two conformations which are designated as the boat-form and the chair-form
Last Answer : It is very unstable, strained compound
Description : Which of the following statements is not true about triacylglycerols? (a) When solids and semisolids at room temperature, they are called fats. (b) When liquids at room temperature, they are ... low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature
Last Answer : Triacylglycerols with low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature
Description : Which of the following statements best describes the structure of waxes? (a) long-chain unsaturated carboxylic acids (b) long-chain saturated carboxylic acids (c) long-chain esters (d) short-chain esters
Last Answer : long-chain esters
Description : Which of the following best explains why the melting points of saturated fats increase with increasing molecular weight? (a) decreased hydrogen bonding (b) increased hydrogen bonding (c) decreased intermolecular van der Waal’s interactions (d) increased intermolecular van der Waal’s interactions
Last Answer : increased intermolecular van der Waal’s interactions
Description : Which of the following statements is not true about fatty acids? (a) Fatty acids are carboxylic acids with long hydrocarbon side chains. (b) The double bonds in unsaturated fatty acids are always ... contain even numbers of carbons and are unbranched. (d) Fatty acids can be saturated or unsaturated
Last Answer : The double bonds in unsaturated fatty acids are always conjugated
Description : Both stearic acid and linoleic acid have 18 carbons. Linoleic acid is unsaturated, while stearic acid is saturated. The melting point of stearic acid : (a) is higher than linoleic acid (b) is lower than linoleic acid (c) is same as linoleic acid (d) can not predict, insufficient information
Last Answer : is higher than linoleic acid