Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.	Match the following :{:((A),"Fermentation",1. "Secondary"),((B),"Dynamite",2. "Methyl alcohol"),((C),"Absolute alcohol",3. ZnCl_(2)+HCl),(( D ) ,"Glycerine",4. "Dihydric alcohol"),((E),"Wood spirit",5. "Nitroglycerine"),((F),"Lucas reagent",6."Propane-1,2,3-triol"),((G),"Propan-2-ol",7. 100% "ethyl alcohol"),((H),"Glycol",8. "Invertase"):}(ii) {:((A),"Methylated spirit",1. "Elimination"),((B),"Enzyme" ,2."Bouveault Blanc reduction"),((C),C_(2)H_(5)OH +"conc." H_(2)SO_(4),3. "Antifreeze"),((D),"Lucase test",4."Esterification" ),((E),"Glycerol",5."Fenton's reagent"),((F),RCHOoverset(Na//C_(2)//N_(5)OH)(rarr),6."Zymase"),((G),FeSO_(4)+H_(2)O_(2),7."Denatured alcohol"),((H),C_(2)H_(5)OH+CH_(3)COOH" in presence of "H_(2)SO_(4),8."Tertiary alcohol"):}
Answer» SOLUTION :`(i)(A-8),(B-5),(C-7),(D-6),(E-2),(F-3),(G-1),(H-4)` `(II) (A-7),(B-6),(C-1),(D-8),(E-3),(F-2),(G-5),(H-4)` `(III) (A-6),(B-4),(C-1),(D-5),(E-3),(F-2)`

2.	Match the following : Answer the following qeustions by appropriately matching the information given in the three columns of the following table. Columns, 1,2 and 3 containing starting materials, reaction conditions and type of reactions,respectively. For the synthesis of benzoic acid, the only correct combination is:
Answer» (III),(IV),(r) (IV),(ii),(p) (I),(iv),(Q) (II),(i),(s) ANSWER :D

3.	Match the following acids with their pK_(a) values :
Answer» `{:(a,B,C,d),(iii,IV,i,II):}` `{:(a,b,c,d),(ii,i,ii,iv):}` `{:(a,b,c,d),(iii,i,iv,ii):}` `{:(a,b,c,d),(iv,ii,iii,i):}` ANSWER :A

4.	Match the following (a) Natural Rubber 1. Polyamide (b) Buna-S 2. Therosetting polymers (c ) Nylon -66 3. Polylsoprene (d) Bakelite 4. Butadiene and styrene.
Answer» SOLUTION :`A-3,B-4,C-1,D-2`

5.	Match the following:
Answer» Answer :A(Q,r), B(p,q,r,t), (C(q,s), D(p,t)

6.	Match the following
Answer» <P> ANSWER :A(q), B( r), C(s), D(p)

7.	Match the following
Answer» ANSWER :A(p,Q,r,s), B(r,s), C(p,q,s), D(p,s)

8.	Match the following
Answer» SOLUTION :(i)-(E), (ii) -(d), (iii) - (a), (iv)-(B), (V)-(c)

9.	Match the following
Answer» SOLUTION :`ITO E, ii tod , III to a, iv to b, V to c`

10.	Match the following
Answer» Solution :(i)-(d) : (ii)-(c)(iii) - (e) , (iv) - (a) : (v) -(b) (vi) -(H) : (VII) -(f) : (viii) - (g) , (ix) - (j) , (X) - (K) , (xi)- (N) , (xiii) - (o) (xiv) - (m) (xv) - (l).

11.	Match the following
Answer» SOLUTION :

12.	Match the following
Answer» ANSWER :D

13.	Match the following
Answer» ANSWER :A

14.	Match the following
Answer» Solution :(a) `HCL to H^(+) + Cl^(-)` Cathode : ` 2H^(+) + 2e^(-) to H_2` Anode " ` 2H_2O to O_2 + 4e^(-) + 4H^(+)`(b) `NACL to Na^(+)+ Cl^(-)` Cathode : `2H_2Oto O_2 + 2e^(-) + 4H^(+)` Anode : `2H^(1)+ 2e^(-) to H_2` (c) CONCENTRATED NaCl Anode : `2Cl^(-) to Cl_2 + 2e^(-)` Cathode : `2H^(+) +2e^(-) to H_2`(d)Anode: ` 2H_2O + O_2 + 2e^(-) + 4H^(+) to H_2 ` Cathode : `Ag^(+) + E^(-) to Ag `

15.	Match the following
Answer» Solution :Non METAL ELECTRODES The reducing ability decreases from top to BOTTOM in the Electrochemical series oxidation ability INCREASES with increase in the reduction potential oxidising power ` alpha` reduction potential ` alpha (1)/("oxidation potential" ) ` Reducing power ` alpha ` oxidation potential ` alpha (1)/("oxidation potential")` Fluorine with high reduction potential is the best oxidant Li with least reduction potential is the best reductant in aqueous medium ` F_2 + 2e^(-) iff 2F^(-) 2.87 V , Cl_2 + 2e^(-) iff 2Cl^(-) 1.36 V ` `Br_2 + 2e^(-0 iff 2Br^(-)) 1.09 V , I_2 + 2e^(-) iff 2I^(-) 0.54 V `

16.	Match the following
Answer» Solution :A) `UNDERSET((l))(Hg)// Hg_2 underset((s))(Cl_2)//underset((aq))(KCl)` calomel electrode ( reference electrode ) when culomel electrode in volves oxidation `underset((l))(2Hg) to underset((aq))(Hg_2^(2+)) + 2e^(-)` when culomel electrode INVOLVES reduction ` underset((s))(Hg_2Cl_2) + 2e^(-) to underset((l))(2Hg) + underset((aq))(2Cl^(-)) :.` It is redox electrode B) AGAR - agar : salt bridge `Zn//Zn_((1M))^(+2)//Cu_((1M))^(+2)//Cu` salt bridge It is inverted U shaped tube filled with a jelly like substance agar -agar mined with an electrolyte like `KCl, KCl, KNO_3` (or) `NH_4NO_3`. It maintain ELECTRICAL neutrality of cell used in ice creams C) 0.1N KCl salt bridge D) Quinhydrone , Pt/Quinhydrone/`H_((aq))^(+)`

17.	Match the following
Answer» Solution :Halfcell REACTION A) `Pt//Fe^(+2), Fe^(+3)` Reversiblechanges occuring at these electodes involves oxidation (or) reaction `Fe^(+2) iff Fe^(+3) + e^(-) overset("right")to ` oxidation takes place `underset("left")(larr)` reduction takes place B) `Pt//H_2//H^(+)` standard hydrogen electrode , platinum plate dipped in to solution of protons will one molar concentration at ` 25^(@)C` hydrogen gas passed over Pt plate at one atom ` underset(aq)(2H^(+)) + 2e^(-) to underset((G))(H_2)` C) `Pt//Hg//Hg_2^(2+)` Metal - metal ion HALF cell ` 2Hg to Hg_2^(+2) + 2e^(-)` D) `Pb//PbSO_4//SO_4^(-2)` Metal sparingly SOLUBLE salt half cell ` Pb iff Pb^(+2) + 2e^-` `Pb^(+2) + SO_4^(2-) iff PbSO_(4(s))`

18.	Match the following
Answer» Solution :CONDUCTIVITY A) `C=(1)/(R) = (1)/(P) xx (1)/(l/a)=K.(1)/(l/a) :. K=C xx (l)/(a)` K is called conductivity (or ) specific CONDUCTANCE B) `(l)/(a) ` = CELL constant , l = length (or ) distance of separation a = area of cross SECTION C) The conductance of a volume of solution containing are gram mole of electrolyte PLACED between two parallel electrodsseparated by a distance of unit length is called molar conductance D) Equivalent conductance `(^^_e )` The conductance of a volume of the solution containing one gram equivalent of the electrolyte placed between two parallel electrods separated by a distance of unit length

19.	Match the following
Answer» Solution :A ) ` alpha = ` degree of ionization `=("Equivalent conductance at concentration C ")/("Equivalent conductance at Infinite dilution") =(^^_e^(c))/(^^_c^(0))` B) `t_(+)` (Transport number ) Transport number of ION of elctrolyte in a solution is the FRACTION of TOTAL current carried by that ion in solution ` t_("ion") = ("current carried by an ion")/("total current carried by both ions")=(U^(+))/(U^(+) + U^(-))` `t_("cation(+)") = ("current carried by an ion")/("current carried by cation and an ion")=(lambda^+)/(lambda)` C ) Fraction of mole undergoing Ionisation `=("MOLAR conductance at any concentration")/("Molar conductance at infinite dilution")` ` alpha = (^^_m^(c))/(^^_m^(0)) , alpha = (^^_e^(c))/(^^_(E)^(0)` D) Transport number of `Na^(+)` ions in NaCl ` t_(+) = ("current = carried by cation")/("current carried by cation and anion")` `=(U^+)/(U^(+) + U^(-)) and t_(+) = (lambda^(+))/(lambda)`

20.	Match the following
Answer» Solution :Conductivity `K=C xx BAR(a)` , K = conductivity , `C = (1)/(R) = (1)/(P) xx (1)/(l/a)`

21.	Match the following
Answer» Solution :A) Blue, SOLUBLE in AMYL alcohol - `(NH_(4))_(2)(CO(SCN)_(4)]` B) White - `CrO_(5)` C) Obtained in the analysis of group IIIB cations - ZnS, `PbSO_(4)` D) Soluble in an ammonium acetate solution - `PbSO_(4)`

22.	Match the following
Answer» Solution :A) Colourless solution – `[Cu (CN)_(4)]^(3-)` B) Bead test - `Co(BO_(2))_(2)` C) Blue - `Co(BO_(2))_(2)` D) RED - `NI (dmg)_(2), FE (SCN)_(3)`

23.	Match the following
Answer» Solution :A) Red vapours - `CrO_(2)Cl_(2)`, KBr heated with `MnO_(2)` and conc. `H_(2)SO_(4)` B) NaOH solution is turned yellow by the vapours - `CrO_(2)Cl_(2), MnSO_(4) + NaBiO_(3)` + conc. `HNO_(3)`, KBr heated with `MnO_(2)` and conc. `H_(2)SO_(4)` C) Purple solution - `MnSO_(4) + NaBiO_(3) + conc. HNO_(3)`, KBr heated with `MnO_(2)` and conc. `H_(2)SO_(4)` D) A COLOURLESS solution results when the evolved gas is absorbed in an NaOH solution - `[Fe(CN)_(5)NOS]^(4-)`

24.	Match the following
Answer» <P> Solution :a) q, R, s: due to formation of soluble complex b) p due to `Fe_(4)[Fe(CN)_(6)]` C) ris due to soluble complex d) due to `Cu_(2)[Fe(CN)_(6)]`

25.	Match the following
Answer» Solution :A) Colour ACIDIFIED `KMnO_(4)` is discharged - Gas evolved by the action of dilute `H_(2)SO_(4)` on a sulphite - Gas evolved by the action of dilute `H_(2)SO_(4)` on a sulphide B) Acidified DICHROMATE solution is turned - Gas evolved by the action of dilute `H_(2)SO_(4)` a sulphite - Gas evolved by the action of dilute `H_(2)SO_(4)` on a sulphide C) Nessler.s reagent gives a brown PRECIPITATE - Gas evolved by heating an ammonium salt with NaOH D) Baryta water turns MILKY - Gas evolved by the action of dilute `H_(2)SO_(4)` on a sulphite - Gas evolved by the action of dilute `H_(2)SO_(4)` on a CARBONATE

26.	Match the following
Answer» Solution :A) `CO_(2)` & B) `SO_(2)` - TURNS lime water milky, gives a white precipitate with a `BaCl_(2)` solution C) `H_(2)S` - gives a BLACK precipitate with a lead acetate solution, turns alkaline nitroprusside violet D) `SO_(4)^(2-)` - gives a white precipitate with a `BaCl_(2)` solution

27.	Match the following
Answer» SOLUTION :A) , Brady.s reagent, Tollen.s reagent, NEUTRAL `FeCl_(3)` Fehling.s Solution B) , Tollen.s reagent C) `CH_(3)-overset(O)overset(\|\|)C-H`, Brady.s, tollen.s and Fehling.s Solution D) `H-overset(O)overset(\|\|)C-OH`, Tollen.s reagent and Fehling.s Solution

28.	Match the following
Answer» SOLUTION :A) dil `HCl+H_(2)S` - Detection of IInd GROUP CATIONS B) `NH_(4)OH+H_(2)S` - Detection of IVth group cations C) Nessler.s reagent - Detection of `NH_(4)^(+)` ion D) `NH_(4)OH+Na_(2)HPO_(4)` - Detection of `MG^(+2)` ion

29.	Match the following
Answer» Solution :A) -OH- ceric ammonium nitrate B) `-COOH-NaHCO_(3)` C) `GT C=O-` 2,4 -DNP D) `-NH_(2)-PhSO_(2)Cl`

30.	Match the following
Answer» Solution :A) `Pb^(2+)` - Ist GROUP B) `CU^(2+)` - II group C) `NH_(4)^(+)` - zero group D) `Al^(3+)` - III group

31.	Match the following
Answer» Solution :A) `Hg^(2+)` - DIL. HCI, `H_(2)S` in presence of HCl, insoluble in `(NH_(4))_(2)S` B) `Pb^(2+)` - Dil. HCI, soluble in `(NH_(4))_(2)S` C) `Hg^(+) - H_(2)S` in presence of HCI, insoluble in yellow `(NH_(4))_(2)S` D) `As^(+3) - H_(2)S` in presence of HCI, soluble in yellow `(NH_(4))_(2)S`

32.	Match the following
Answer» Solution :A) LITHIUM - Crimson red B) BARIUM - Apple green C) Calcium - BRICK red D) Magnesium - No FLAME colour

33.	Match the following
Answer» Solution :A) Sodium nitroprusside - `Na_(2)[Fe(CN)_(5)NO]` B) Chromyl CHLORIDE - `CrO_(2)Cl_(2)` C) Brown RING - `[Fe(H_(2)O)_(5)NO]SO_(4)` D) Prussianblue - `Fe_(4)(Fe(CN)_(6)]_(3)`

34.	Match the following
Answer» Solution :A) - Hinsburg reagent (`PhSO_(2)Cl_(3)`) B) `CH_(3)overset(O)overset(\|\|)C CH_(2)overset(O)overset(\|\|)CH, CH_(3)-overset(O)overset(\|\|)C CH_(2)overset(O)overset(\|\|)C-OH` -Ioso form test `I_(2)//OH^(-)` C) `HCOOH, HCHO-NaHCO_(3)` D)

35.	Match the following
Answer» Solution :A) Baeyer.s reagent - Alkine `KMnO_(4)` B) Ceric ammoniumnitrate - `(NH_(4))_(2)[Ce(NO_(3))_(6)]` C) Hinsberg reagent - `PhSO_(2)Cl` D) Tollen.s reagent - AMMONICAL `AgNO_(3)`

36.	Match the following
Answer» Solution :A) Ammonical `AgNO_(3)` - Presence of acetylinic GROUP or - CHO group B) `I_(2)//NaOH` - Presence of`-underset(OH)underset(\|)CH-CH_(3)` C) `NaHCO_(3)` - Presence of strongly acidic GROUPS D) Ozonolysis - DETECT or confirm the position of double bonds

37.	Match the following
Answer» Solution :A) Edman REAGENT – Phenyl ISOTHIOCYANATE B) HOFMANN mustard - diethyl OXALATE OIL reagent C) Lucas reagent - Anhyd `ZnCl_(2)` + conc.HCI D) Liebermann reagent - `NaNO_(3) + conc. H_(2)SO_(4)`

38.	Match the following
Answer» Solution :A) `Cl^(-)+AgNO_(3) overset(HNO_(3))to underset("WHITE PPT")(AgCl darr +NO_(3)^(-))` B) `Na_(2)[Fe(CN)_(5)(NO)]+Na_(2)S to Na_(4)[Fe(CN)_(5)(NOS)]` C) Prussian bluetest with `FeSO_(4)//FeCl_(3)` D) `Fe^(3+)+SCN^(-) to [Fe(SCN)]^(2+)`

39.	Match the following
Answer» Solution :A) `R-OH+(NH_(4))_(2)[Ce(NO_(3))_(6)] to (NH_(4))_(2)[Ce(OR)(NO_(3))_(5)]+HNO_(3)` B) `6C_(6)H_(5)O+FeCl_(3) to underset("violet or red")([Fe(C_(6)H_(5)O)_(6)]^(3+))+6H^(+)+3Cl^(-)` C) `NaHCO_(3)` reach only with R-COOH not with R-OH and `C_(6)H_(5)OH` D) Vector Mayer test used to difer ventilate `1^(@), 2^(@), 3^(@)` alcohol

40.	Match the following
Answer» Solution :A) `Na_(2)[Fe(CN)_(5)(NO)]+Na_(2)S to underset("violet COLOUR")(Na_(4)[Fe(CN)_(5)(NOS)])` B) `Fe^(3+)+SCN^(-) to underset("blood red colour")([Fe(SCN)]^(2+))` C) `3Na_(4)[Fe(CN)_(6)]+4Fe^(3+) to underset("prussion blue")(Fe_(4)[Fe(CN)_(6)]_(3))` D) `Na_(3)PO_(4)+12(NH_(4))_(2)MoO_(4)+24HNO_(3) to underset("yellow ppt")((NH_(4))_(3)PO_(4).12MoO_(3) 21NH_(4)NO_(3))+3NaNO_(3)+12H_(2)O`

41.	Match the following
Answer» SOLUTION :A) ANILINE can be purified by stream distilation because it is insoluble in water B) Glyceral and spentlye purified by distilation under reduced pressure because they under go decomposition at its B.P. C) Benzoic ACID undergo sublimation (impurition should not) D) Amino ACIDS can be separated by chromatographic method

42.	Match the following:
Answer» A-2, B - 4. C -5, D - 1 A -2, B - 4, C - 5, D - 3 A-4, B-2, C-5, D - 1 A - 4, B-2, C-5, D - 3 Answer :A

43.	Match the following
Answer» `{:(A, B,C,D),(V,IV,ii,i):}` `{:(A, B,C,D),(v,iv,i,ii):}` `{:(A, B,C,D),(iii,iv,ii,i):}` `{:(A, B,C,D),(iv,iii,i,ii):}` Answer :2

44.	Match the following
Answer» 1-c, 2-d, 3-e, 4-B 1-e, 2-c, 3-d, 4-a 1-e, 2-d, 3-a, 4-c 1-d, 2-a, 3-c, 4-e Answer :B

45.	Match the following
Answer» `{:(I,II,III,IV),(D,C,B,A):}` `{:(I,II,III,IV),(B,A,C,D):}` `{:(I,II,III,IV),(A,D,B,C):}` `{:(I,II,III,IV),(C,A,D,B):}` Answer :A

46.	Match the following
Answer» `{:( 1,2,3,4), ( E,C,B,d) :} ` `{:( 1,2,3,4), ( a,c,e,d) :} ` `{:( 1,2,3,4), (a,b,c,d) :} ` `{:( 1,2,3,4), (e,b,c,a) :} ` ANSWER :B

47.	Match the following
Answer» I-D,II-C,III-B,IV-A I-B,II-A,III-C,IV-D I-A,II-D,III-B,IV-C I-C,II-A,III-D,IV-B Answer :A

48.	Match the following
Answer» ANSWER :A-p,Q,R; B-p,q,r; C-q,r; D-s

49.	Match the following
Answer» Solution : a) REACTS with `NaNO_(2)+HCL`, b) Undergo COUPLING REACTION , c) undergo `E^(+)` substitutions gives (a), (b), ( c ), (d) reacts with HCl

50.	Match the following
Answer» Solution :A)Lyamides on reduction GIVES `1^(@)RNH_(2)` B) on `H_(2)O` gives HCOOH C) UNDERGOES `E^(+)` substitutions on hydrolysis gives `R-NH_(2)` D) Undergoes `E^(+)` substitutions