(i) Total number of tractions on fractional distillation of I, II and III. (ii) Optical active compounds. (iii) Relation between I and II. (iv) Relati

1 Answer

Answer :

(i) Total number of tractions on fractional distillation of I, II and III. (ii) Optical active compounds. ... and II. (iv) Relation between I and II.

Related questions

Description : What are a group of compounds collected during fractional distillation?

Last Answer : These are components with lower boiling points.

Description : For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) ... an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry

Last Answer : i) [Fe(en)2Cl2] Cl or x + 0 + 2 (-1) + (-1) = 0 x + (- 3) = 0 or x = + 3 ∴ Oxidation number of iron, x = + 3 (ii) The complex has two bidentate ligands and two ... )2Cl2] Cl, only cis-isomer shows optical isomerism. (vi) Name of complex: Dichloridobis (ethane-1, 2- diamine) Iron (III) chloride

Description : Numer of fractions on fractional distillation of mixture of:

Last Answer : Numer of fractions on fractional distillation of mixture of: A. 2 B. 3 C. 4 D. 1

Description : Which of the following pair of isomers can not be separated by fractional crystallisation or fractional distillation:

Last Answer : Which of the following pair of isomers can not be separated by fractional crystallisation or fractional ... )-lactic acid and (-) -lactic acid

Description : Absolute alcohol cannot be obtained by simple fractional distillation because

Last Answer : Absolute alcohol cannot be obtained by simple fractional distillation because A. pure `C_(2)H_ ... oxidation D. it forms azeotropic mixture with water

Description : When during fractional distillation hydrocarbons are separated according to their?

Last Answer : Fractional distillation separates substances according to theirboiling point.

Description : Consider the following statements: 1. Carbyne is an allotrope of carbon. 2. Gasoline, used as a fuel in motor vehicles is a mixture of petrol and alcohol. 3. Petroleum is also known as 'liquid gold'. 4. The various components of crude ... (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

Last Answer : Ans:(b)

Description : Consider the following processes: 1. Evaporation 2. Fractional distillation 3. Distillation 4. Filtration The process(es) involved in the refining of crude oil is/ are: (a) 3 only (b) 2 and 3 (c) 3 only (d) 1 only

Last Answer : Ans:(b)

Description : Coke is obtained from coal by (a) Distillation (b) Fractional distillation (c) Destructive distillation (d) Cracking

Last Answer : Ans:(c)

Description : The manufacturing of iron from ironore involves the process of - (1) Oxidation (2) Reduction (3) Electrolysis (4) Fractional distillation

Last Answer : (2) Reduction Explanation: Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as hematite contain iron oxide. The oxygen must be removed from the iron oxide to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.

Description : The manufacture of iron from iron ore involves the process of – (1) oxidation (2) reduction (3) fractional distillation (4) electrolysis

Last Answer : (2) reduction Explanation: The manufacture of iron ore involves the process of reduction. Important ores of iron : Haematite, Magnetite.

Description : Sea water can be purified by the process of – (1) distillation (2) evaporation (3) filtration (4) fractional distillation

Last Answer : (1) distillation Explanation: The traditional process used in desalination operations is vacuum distillation- essentially the boiling of water at less than atmospheric pressure and thus a much ... when the vapor pressure equals the ambient pressure and vapor pressure increases with temperature.

Description : Two liquids (A)and(B)are separated by fractional distillation, the boiling point of (A) is less than (B).which liquid comes out first in distillate? Explain.

Last Answer : The liquid (a) comes out first in distillate. On boiling the vapours of lower boiling component are formed first.

Description : Why water cannot be separated completely from ethyl alcohol by fractional distillation?

Last Answer : Ethyl alcohol and water (95.4% ethyl alcohol and 4.6% water) form constant boiling mixture (azeotrope) boiling at 351.1 K. Hence, further water cannot be separated completely from ethyl alcohol by fractional distillation.

Description : The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and ... is called  A. cracking  B. carbonisation  C. fractional distillation  D. full distillation

Last Answer : Answer: C

Description : Give application of simple distillation. What is the principle of fractional distillation?

Last Answer : Applications of simple distillation:  i. It is used for the preparation of distilled water and water for injection. ii. Preparation of many volatile oils and aromatic water. iii. Purification ... becomes richer with the liquid having the lower boiling point which gets condensed in a condenser. 

Description : Give the principle, working and application of” Fractional distillation.

Last Answer : Principle of fractional distillation:  It differs from simple distillation in that Partial condensation of vapour is allowed to occur in a fractionating column through which the vapour must pass before reaching ... , such as alcohol & water, acetone & water, Chloroform & Benzene.

Description : Explain the theory of fractional distillation?

Last Answer : Theory of fractional distillation:  i. When substance dissolved in liquid, the vapour pressure of liquid is lowered. ii. When two miscible liquids are mixed together each will act as ... from two miscible liquids at boiling point is richer in component exerting the greater partial pressure.

Description : Explain the theory of fractional distillation.

Last Answer : Theory: When the substance dissolved in a liquid, the vapour pressure of the liquid is lowered. When two miscible liquid are mixed together, each will act as solute or solvent for ... condensing vapour returning to still. This results in enrichment of the vapour in the more volatile component.

Description : Crude oil is separated into its components by: w) chemical reaction x) simple distillation y) fractional distillation z) settling

Last Answer : ANSWER: Y -- FRACTIONAL DISTILLATION 

Description : The noble gases have low boiling points because: w) their ionization potentials are very low x) only weak Van der Waals forces hold the atoms together y) they are produced by the fractional distillation of liquid air z) they have eight electrons in the outer shell

Last Answer : ANSWER: X -- ONLY WEAK VAN DER WAALS FORCES HOLD THE ATOMS TOGETHER

Description : The manufacturing of iron from ironore involves the process of (1) Oxidation (2) Reduction (3) Electrolysis (4) Fractional distillation

Last Answer : Reduction

Description : The manufacture of iron from iron ore involves the process of (1) oxidation (2) reduction (3) fractional distillation (4) electrolysis

Last Answer : reduction

Description : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

Last Answer : Decomposition of manganese dioxide

Description : Sea water can be purified by the process of (1) distillation (2) evaporation (3) filtration (4) fractional distillation

Last Answer : distillation

Description : Impure camphor is purified by (1) sublimation (2) fractional crystallisation (3) fractional distillation (4) steam distillation

Last Answer : sublimation

Description : Arrange the following compounds in decreasing order of reactivity for EAR :- (I) `CH_(2)=CH_(2)` (II) `CH_(3)-CH=CH_(2)` (III) `Ph_(2)C=CH-CH_(3)` (IV

Last Answer : Arrange the following compounds in decreasing order of reactivity for EAR :- (I) `CH_(2)=CH_(2)` (II) `CH_(3)- ... I gt IV` D. `II gt III gt IV gt I`

Description : Which of the following compounds can show geometrical isomerism : (i) Pent-1-ene (ii) 1-chloropropene (iii) 2-Methylbut-2-ene (iv) `CH_(3)-CH=CH-CH_(3

Last Answer : Which of the following compounds can show geometrical isomerism : (i) Pent-1-ene (ii) 1-chloropropene (iii) 2- ... -ene (iv) `CH_(3)-CH=CH-CH_(3)`

Description : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3))_(2)` (iv) `NH_(4)NO_(3)` . Which of the following statement/s

Last Answer : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3)) ... and (iii) liberate `O_(2)` D. All statements are correct

Description : How many of the following compounds are possible products when chlorine is passed through hypo solution (i) S (ii) HCl (iii) `Na_(2)S` (iv) `Na_(2)SO_

Last Answer : How many of the following compounds are possible products when chlorine is passed through hypo solution (i) S (ii) ... )S_(4)O_(6)` (vi) `HClO_(4)`

Description : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3))_(2)` (iv) `NH_(4)NO_(3)` . Which of the following statement/s

Last Answer : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3)) ... and (iii) liberate `O_(2)` D. All statements are correct

Description : How many of the following compounds are possible products when chlorine is passed through hypo solution (i) S (ii) HCl (iii) `Na_(2)S` (iv) `Na_(2)SO_

Last Answer : How many of the following compounds are possible products when chlorine is passed through hypo solution (i) S (ii) ... )S_(4)O_(6)` (vi) `HClO_(4)`

Description : How many compounds liberate `NH_(3)` on heating from the following ? (i) `(NH_(4))_(2)SO_(4) " " (ii) (NH_(4))_(2)CO_(3) " " (iii) NH_(4)Cl` (iv) `NH_

Last Answer : How many compounds liberate `NH_(3)` on heating from the following ? (i) `(NH_(4))_(2)SO_(4) " " (ii) (NH_(4)) ... 3) " " (v) (NH_(4))_(2)Cr_(2)O_(7)`

Description : In the following compounds piperidine (I), pyridine (II), morpholine (III) and pyerrole (IV), the order of basicity is :

Last Answer : In the following compounds piperidine (I), pyridine (II), morpholine (III) and pyerrole ( ... `IIIgtIgtIVgtII` C. `IIgtIgtIIIgtIV` D. `IgtIIIgtIIgtIV`

Description : In the following compounds phenol (I), p-cresol (II), m-nitrophenol (III) and p-nitrophenol (IV), the order of acidity is:

Last Answer : In the following compounds phenol (I), p-cresol (II), m-nitrophenol (III) and p- ... `IgtIVgtIIIgtII` C. `IIgtIgtIIIgtIV` D. `IVgtIIIgtIgtII`

Description : Howmany of the following compounds are dissolve in aqeous solution of `NaOH` (i) Phenol (ii) Cyclohexanol (iii) 2, 4-di nitro phenol (iv) Benzoic (v)

Last Answer : Howmany of the following compounds are dissolve in aqeous solution of `NaOH` (i) Phenol (ii) ... ) `alpha-` naphthol (ix) N-methyl aniline

Description : Which of the following compounds can be used for drying of `H_(2)S` gas? I. Conc `H_(2)SO_(4)` II. `P_(4)O_(10)` III. Anhydrous `CaC1_(2)` IV. Anhydro

Last Answer : Which of the following compounds can be used for drying of `H_(2)S` gas? I. Conc `H_(2)SO_(4)` II. ` ... IV B. only I C. only II and III D. only III

Description : Solve for `x` (where `[*]` denotes greatest integer function and `{*}` represent fractional part function) `(i) [2x]=1` `(ii) {x}^(2)+[x]=2` `(iii) 6{

Last Answer : Solve for `x` (where `[*]` denotes greatest integer function and `{*}` represent fractional part function) `(i) [2x]=1 ... 0` `(iv) 6{x}^(2)-5{x}-1=0`

Description : In flight, it is possible to: i. File an IFR flight plan ii. Modify an active flight plan iii. Cancel a VFR flight plan iv. Close a VFR flight plan (rules of the air ann2 3.3.5) a. i and ii b. i, ii, iii and iv c. ii, iii and iv d. i and iv

Last Answer : b. i, ii, iii and iv

Description : In flight, it is possible to: i. File an IFR flight plan ii. Modify an active flight plan iii. Cancel a VFR flight plan iv. Close a VFR flight plan (rules of the air ann2 3.3.5) a. i and ii b. i, ii, iii and iv c. ii, iii and iv d. i and iv

Last Answer : b. i, ii, iii and iv

Description : Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer

Last Answer : (i) Active transducer:-Thermocouple, piezoelectric, photovoltaic cell (ii) Primary transducer:- Bourdon tube, bellows, (iii) Electrical transducer.:- LVDT,RVDT, Hall effect, strain gauge, ... , optical pyrometer, radiation pyrometer (iv) Digital transducer:- Linear Encoder, digital taco generator

Description : Define following networks (i) Active (ii) Passive (iii) Unilateral (iv) Bilateral. 

Last Answer : An element capable of giving out power or energy to some external device is called an active element. e.g. battery, generator etc. An element which is not an active element and capable of ... : A network consisting of only passive elements i.e. no active element, is called passive network.

Description : Total number of optical active stereoisomers of the following compound is : `CH_(3)-CH=CH-CHCI-CH=C=CH-CH=CH-CH_(3)`

Last Answer : Total number of optical active stereoisomers of the following compound is : `CH_(3)-CH=CH-CHCI-CH=C=CH-CH=CH-CH_(3)` A. 8 B. 6 C. 16 D. 10

Description : Find the total number of acidic radical which produce volatile product with dil HCl : `(i) SO_(4)^(2-) " " (ii) I^(-) " " (iii) NO_(2)^(-) " " (iv) NO

Last Answer : Find the total number of acidic radical which produce volatile product with dil HCl : `(i) SO_(4)^(2-) " " (ii) ... SO_(3)^(2-) " " (vi) HCO_(3)^(-)`

Description : Explain the principle of the following – (i) Distillation (ii) Drying (iii) Crystallization

Last Answer : Distillation:-Distillation is an operation in which the components of a liquid mixture are separated using thermal energy. It depends upon the difference in boiling points of the individual components. The ... temperature. The solute then comes out of the solution in the form of pure crystals.  

Description : Total no. of probes fitted on digital double rail tester for rail testing are (i) 12 (ii) 8 (iii) 14* (iv) 16.

Last Answer : (iii) 14*

Description : Net returns a). Gross return – Fixed cost – Variable cost b). Gross return – Variable cost c). Gross return – Fixed cost d). Gross return – Total cost i) a & b, ii) a & c, iii) a & d, iv) b & d

Last Answer : iii) a & d

Description : The order of a chemical reaction is (A) An experimentally determined quantity (B) Always equal to the total stoichiometric number of reactants (C) Never fractional (D) None of these

Last Answer : (A) An experimentally determined quantity

Description : Statement-I : Mass numbers of most of the elements are fractional. Because Statemen-II Mass numbers are obtained by comparing with the mass number of

Last Answer : Statement-I : Mass numbers of most of the elements are fractional. Because Statemen-II Mass numbers are ... If both (A) and (R ) are incorrect.

Description : Consider the following two commands C1 and C2 on the relation R from an SQL database:  C1: drop table R; C2: delete from R; Which of the following statements is TRUE? I. Both C1 and C2 delete the schema for R. II. C2 ... R. (A) I only (B) I and II only (C) II and III only (D) I, II and III

Last Answer : (C) II and III only