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.	The correct order of acid strengths of benzoic acid (X), peroxybenzoic acid (Y) and p-nitrobenzoic acid (Z) is
Answer» `Y GT Z gt X` `Z gt Y gt X` `Z gt X gt Y` `Y gt X gt Z` Solution :The acidic strength depends upon the stabilisation of negative CHARGE developed due to the donation of `H^(+)` ion. Hence, acidic strength ORDER is `Z gt X gt Y`.

2.	The correct order of acidic nature of oxides is in the order
Answer» `NO lt N_(2)O lt N_(2)O_(3) lt NO_(2) lt N_(2)O_(5)` `N_(2)O lt NO ltN_(2)O_(3)ltNO_(2)ltN_(2)O_(5)` `N_(2)O_(5)ltNO_(2)ltN_(2)O_(3)ltNOltN_(2)O` `N_(2)O_(5)ltN_(2)O_(3)ltNO_(2)ltNOltN_(2)O` Solution :The acidic character of OXIDES increases with increases in OXIDATION number of ELEMENT. `UNDERSET("Neutral")(ubrace(N_(2)O" "NO))" "underset("increases")underset("Acidic character")(ubrace(N_(2)O_(3),NO_(2),N_(2)O_(5)))`

3.	The correct order of acid strength of the following substituted phenols in water at 28^(@)Cis
Answer» p-nitrophenol `LT` p-fluorophenol `lt `p-chlorophenol p-chlorophenol`lt ` p-luorophenol `lt `p-nitrophenol fuorophenol `lt`p-chlorophenol `lt`p-nitrophenol p-fluorophenol `lt` p-nitrophenol `lt` p-chlorophenol Answer :C

4.	The correct order of acid strength of the followingsubstituted phenol in water at 28^(@)Cis :
Answer» p-nitrophenol ` LT ` p-fluorophenol ` lt ` p-chlorophenol p-chlorophenol ` lt ` p-fluorophenol ` lt` p-nitrophenol p-fluorophenol` lt ` p-chlorophenol ` lt` p-nitrophenol p-fluorophenol ` lt ` p-nitrophenol `lt` p-chlorophenol ANSWER :C

5.	The correct order of acid strengthis
Answer» `HClO_(4) LT HClO_(3) lt HClO_(2) lt HClO` `HClO lt HClO_(2) lt HClO_(3) lt HClO_(4)` `HClO_(4) lt HClO lt HClO_(2) lt HClO_(4)` `HClO_(2) lt HClO_(3) lt HClO_(4) lt HClO` Answer :B

6.	The correct order of acid strength is
Answer» `HCIO_4ltHCIO_3ltHCIO_2ltHCIO` `HCIOltHCIO_2ltHCIO_3ltHCIO_4` `HCIO_4ltHCIOltHCIO_2ltHCIO_3` `HCIO_2ltHCIO_3ltHCIO_4ltHCIO` ANSWER :B

7.	The correct order of acidic strength is
Answer» `CH_3COOHgtCH_2ClCOOHgtCHCl_2COOH` `CHCl_2COOHgtCH_2ClCOOHgtCH_3COOH` `CHCl_2COOHgtCH_3COOHgtCH_2ClCOOH` `CH_2ClCOOHgtCH_3COOHgtCHCl_2COOH` ANSWER :B

8.	The correct order ionic radii of Y^(3) ,La^(3+), En^(3+) and Lu^(3+) is
Answer» `Y^(3+) LT La^(3+) lt Eu^(3+) lt Lu^(3+)` `Y^(3+) lt Lu^(3+) lt Eu^(3+) lt La^(3+)` `Lu^(3+) lt Eu^(3+) lt La^(3+) lt Y^(3+)` `La^(3+) lt Eu^(3+) lt Lu^(3+) lt Y^(3+)` SOLUTION :Ionic radii decrease from `La^(3+)` to `Lu^(3+)` due to lanthanoid contraction. `Y(Z=39)` is first member of 4d-series so that `Y^(3+)` is smallest in SIZE. Thus, order of ionic radii is `La^(3+) GT Eu^(3_) gt Lu^(3+) gt Y^(3+)`

9.	The correct order of 2^(nd) ionization potential of carbon, nitrogen , oxygen and fluorine is
Answer» CgtNgtOgtF OgtNgtFgtC OgtFgtNgtC FgtOgtNgtC Solution :`C(6) 1s^(2)2s^(2) 2p_(x)^(1) 2p_(y)^(1)"" N(7) 1s^(2)2s^(2)2p_(x)^(1) 2p_(y)^(1) 2p_(z)^(1)` `O(8) 1s^(2)2s^(2)2p_(x)^(2) 2p_(y)^(1)2p_(z)^(1) "" F(9)1s^(2)2s^(2)2p_(x)^(2)2p_(y)^(2)2p_(z)^(1)` O has highest `2^(nd)` ionization potential i.e., ionization ENERGY because after LOSING one electron, it acquires stable half filled p-electronic configuration. F is smaller than N, therefore, it has higher second ionization potential. C has least due to BIGGER size.

10.	The correct order of acedic strength of the following compounds is
Answer» `HClOgtHClO_(2)gtHClO_(3)gtHClO_(4)` `HClO_(4)gtHClO_(3)gtHClO_(2)gtHClO` `HClO_(2)gtHClOgtHClO_(3)gtHClO_(4)` `HClO_(4)gtHClO_(2)gtHClO_(3)gtHClO` Answer :B

11.	The correct order of 1st ionisation enthalpy among the following elements Be, B,C,N and O is
Answer» `BltBeltCltOltN` `BltBeltCltNltO` `BeltBltCltNltO` `BltBeltCltOltN` ANSWER :D

12.	The correct order of the O-O bond length in O_(2), H_(2)O_(2) and O_(3)is :
Answer» `O_(2)ltH+_(2)O_(2)lt_(3)` `O_(3)ltH_(2)O_(2)ltO_(2)` `H_(2)O_(2)ltO_(2)ltO_(3)` `O_(2)ltO_(3)ltH_(2)O_(2)` Answer :D

13.	The correct order in which the first ionisation potential increases is
Answer» K, Be, Na Be, Na, K Na, K, Be K, Na, Be Solution :The ELECTRONIC configuration of the elements are `._(4)Be-1s^(2)2s^(2)` `._(11)Na-1s^(2)2s^(2)2p^(6)3s^(1)` `._(19)K-1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)` The FIRST ionisation energy of Be is maximum because ELECTRON is to be drawn from stable (fully FILLED) orbital. The `I^(st)` ionisation energy of Na is greater than K because size of the K is bigger than Na which facilitates easy REMOVAL of electron from its outermost shell. So, the sequence is `KltNaltBe`.

14.	The correct order in which the first ionization potential increases is
Answer» K , Be , Na Be, Na K Na , K, Be K, Na, Be Solution :The electronic configuration of the elements are `._(4)Be-1s^(2)2s^(2)` `._(11)Na-1s^(2)2s^(2)2p^(6)3s^(1)` `._(19)K-1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)` The first IONIZATION energy of Be is maximum because electron is to be drawn from stable (fully filled) orbital. The `1^(st)`ionization energy of Na is greater than K because size of the K is bigger than Na which facilitates easy removal of electron from its outermost shell. So, the sequence is `KltNaltBe`.

15.	The correct order for the CFSE (numerical value) for the following complexes is : {:("Complex", P , Q , R , S),("Formula" ,[Co(CN)_(6)]^(3-) , [Co(NH_(3))_(6)]^(3+) , [CoF_(6)]^(3+) , [Co(H_(2)O)_(6)]^(3+)):}
Answer» `PgtQgtRgtS` `PgtQgtSgtR` `SgtRgtPgtQ` `RgtQgtPgtS` ANSWER :B

16.	The correct order for the wavelength of absorption in the 27. visible region is :
Answer» `[Ni(NO_(2))_(6)]^(4-) lt [Ni(NH_(3))_(6)]^(2+) lt [Ni(H_(2)O)_(6)]^(2+)` `[Ni(NO_(2))_(6)]^(4-) lt [Ni(H_(2)O)_(6)]^(2+) lt [Ni(NH_(3))_(6)]^(3+)` `[Ni(H_(2)O)_(6)]^(2+) lt [Ni(NH_(3))_(6)]^(2+) lt [Ni(NO_(2))_(6)]^(4-)` `[Ni(NH_(3))_(6)]^(2+) lt [Ni(H_(2)O)_(6)]^(2+) lt [Ni(NO_(2))_(6)]^(4-)` Solution :For any metal cation,, the magnitude of `Delta_(0)` depends upon the nature of ligand. Higher the value of `Delta_(0)`, LOWER will be the WAVE length absorbed. `Delta_(0)` is crystal field stabilisation energy. The value of `Delta_(0)` for ligands varies as follows `H_(2)O lt NH_(3) lt NO_(2)^(-)` so, the wavelength absorbed will vary in REVERSE order `NO_(2)^(-) lt NH_(3) lt H_(2)O`.

17.	The correct option(s) to distinguish nitrate salts of Mn^(2+)" and Cu^(2+) taken separately is (are)
Answer» `MN^(2+)` show the characteristic green colour in the flame test Only `Cu^(2+)` show the formation of precipitate by passing `H_(2)S` in acidic MEDIUM Only `Mn^(2+)` show the formation of precipitate by passing `H_(2)S` in faintly basic medium `Cu^(2+)//Cu` has higher reduction potential than `Mn^(2+)//Mn` (measured under similar conditions). Solution :(b,d) Both these are correct. (b) In weakly acidic medium, only `Cu^(2+)` ions form black precipitate of CuS. (d) `E_(Cu^(2+)//Cu)^(@)(+0.34V)` is higher than that of `E_(Mn^(2+)//Mn)^(@)(-1.18V)` The other two options are not correct. (a) `Cu^(2+)" and not "Mn^(2+)` shows characteristic green colour in the flame test. (c) Both `Cu^(2+)" and "Mn^(2+)` show the formation of precipitate (CuS-Black) & MnS-Brown) by passing `H_(2)S` in faintly basic medium.

18.	The correct order for E_(2) reaction with alc. KOH will be :-
Answer» `igtiigtiii` `iiigtiigti` `iigtigtiii` `iiigtigtii` ANSWER :A

19.	The correct order for decreasing acidic strength of oxyacids of group 15 is
Answer» `HNO_(3) gt H_(3)SbO_(4) gt H_(3)AsO_(4) gt H_(3)PO_(4)` `H_(3)PO_(4) gt H_(3)AsO_(4) gt H_(3)SbO_(4) gt HNO_(3)` `HNO_(3) gt H_(3)PO_(4) gt H_(3)AsO_(4) gt H_(2)SbO_(4)` `HNO_(3) gt H_(3)AsO_(4) gt H_(3)PO_(4) gt H_(3)SbO_(4)` Answer :C

20.	The correct option(s) to distinguish nitrate salts of Mn^(2+) and Cu^(2+) taken separately is (are) : -
Answer» ` Mn^(2+)` SHOWS the characteristic green colour in the FLAME test Only `CU^(2+)` shows the FORMATION of precipitate by passing `H_(2)S` in acidic medium Only `Mn^(2+)` shows the formation of precipitate by passing `H_(2)S` in faintly basic medium `Cu^(2+)//Cu` has higher reduction potential than `Mn^(2+)//Mn` (measured under similar CONDITIONS) Answer :B::D

21.	The correct order for homolytic bond dissociation energies (Delta H in kcal/mol) for CH_(4)(A), C_(2)H_(6)(B) and CH_(3)Br(C) is
Answer» `C GT B gt A` `B gt C gt A` `C gt A gt B` `A gt B gt C` ANSWER :B

22.	The correct option regarding size of orbitals is:
Answer» `3pgt4pgt5p` `3plt4p=5p` `3plt4plt5p` `3p=4p=5p` SOLUTION :VALUE of N `uparrow` SIZE of ORBITAL `uparrow`

23.	The correct option regarding the percentage of product obtained during nitration of aniline at 288K is
Answer» SOLUTION :o-nitro ANILINE is the MINOR PRODUCT

24.	The correct option among the following is:
Answer» Colloidal particles in lyophobic sols can be PRECIPITATED by electrophoresis. Colloidal medicines are more effective because they have small surface area. Brownian motion in colloidal solution is faster if the viscosity of the solution is very high. Addition of alum to water makes it unfit for drinking Solution :Colloidal particles in lyophobic sols are charged particles which can MOVE towards anode/cathode on application of electric FIELD hence their precipitation can OCCUR.

25.	The correct number of significant figures in the answer of 0.00383 -0.00303 is :
Answer» TWO five one four SOLUTION :0.00383 - 0.00303 = 0.0050 (two SIGNIFICANT DIGITS)

26.	Thename of the given compound [Cu(NH_3)_4](NO_3)_2 , according to IUPAC system is:
Answer» CUPRAMMONIUM nitrate Tetrammine COPPER (II) dinitrate. Tetrammine copper (II) nitrate Tetrammine copper (III) dinitrate Answer :C

27.	The correct name of the compound [Cu(NH_3)_4](NO_3)_2 according to IUPAC system is:
Answer» CUPRAMMONIUM nitrate Tetraammine COPPER (II) dinitrate Tetraammine copper(II) nitrate Tetraammine copper(I) dinitrate Answer :C

28.	The correct name of 'sucrose' is :
Answer» `ALPHA`-D-glucopyranosyl-`BETA`-D-fructofuranoside `beta`-D-glucopyranosyl-`beta`-D-fructofuranoside `alpha`-D-glucopyranosyl-`alpha`-D-fructofuranoside `beta`-D-glucopyranosyl-`alpha`-D-fructofuranoside Solution :N//A

29.	The correct name of \|Pt(NH_(3))_(4)Cl_(2)\|\|PtCl_(4)\| is
Answer» Tetraammine DICHLORO platinum (iv) TETRACHLORO platinate (II) Dichloro tetra AMMINE platinium (iv) tetrachloro platinate (ii) Tetrachloro platinum (ii) tetraammine platinate (iv) Tetrachloro platinum (ii) dichloro tetraammine platinate (iv) ANSWER :A

30.	The correct name of given compound is:-
Answer» Isopropyl BENZENE cumene 2–propyl benzene All of these Solution : 2-Phenyl propane OR isopropyl benzene & its COMMON NAME is cumene.

31.	The correct name of is :
Answer» Tri-u-carbonyl BIS (tricarbonyl) iron(0) Hexacarbonyl iron(III) `MU`-tricarbonyl FERRATE(0) Tricarbonyl iron(0) `mu`-tricarbonyl iron(0) tricarbonyl Nonacarbonyl iron Answer :A

32.	The correct name and product of given reaction are respectively (AAK_MCP_37_NEET_CHE_E37_020_Q01)
Answer» KOLBE's REACTION, Gatterman reaction, Gatterman-Koch reaction, `(AAK_MCP_37_NEET_CHE_E37_020_A01)` STEPHEN reaction, Answer :C

33.	The correct name for the complex ion [CoCl(ONO)(en)_(2)]^(+) is:
Answer» chlorobis(ETHYLENEDIAMINE)nitrito-O-COBALTATE (III) ion chlorodiethyldiaminenitrito-O-cobalt (III) ion chloronitrito-O-diethyldiamine cobaltate (III) ion chlorobis(ethylenediamine) nitrito-O-cobalt (III) ion Solution :The CORRECT NAME is chlorobis(ethylenediamine)nitritocobalt (III).

34.	The correct match which is responsible for colour
Answer» `{:(A,B,C,D),(4,1,2,5):}` `{:(A,B,C,D),(4,1,5,2):}` `{:(A,B,C,D),(4,5,1,2):}` `{:(A,B,C,D),(5,2,3,4):}` ANSWER :B

35.	The correct match is
Answer» `{:(A,B,C,D),(IV,I,III,II):}` `{:(A,B,C,D),(IV,III,I,II):}` `{:(A,B,C,D),(III,IV,II,I):}` `{:(A,B,C,D),(IV,I,II,III):}` ANSWER :D

36.	The correct match is
Answer» a - II, B - i, c - iii, d - IV a - iv, b - i, c - iii, d - ii a - iv, b - iii, c - i, d - ii a - iv, b - ii, c - iii, d - i Answer :B

37.	The correct match is
Answer» `{:(A,B,C,D),(3,4,1,2):}` `{:(A,B,C,D),(4,3,1,2):}` `{:(A,B,C,D),(5,3,4,2):}` `{:(A,B,C,D),(5,4,1,3):}` ANSWER :A

38.	The correct match is
Answer» 1-C, 2-A, 3-E, 4-B 1-C, 2-E, 3-B, 4-A 1-C, 2-E, 3-A, 4-B 1-E, 2-C, 3-A, 4-B ANSWER :C

39.	Thecorrect match is
Answer» ANSWER :A

40.	The correct match is
Answer» ANSWER :B

41.	The correct match is
Answer» `{:(i,II,III,iv),(D,A,B,C):}` `{:(i,ii,iii,iv),(D,B,A,C):}` `{:(i,ii,iii,iv),(D,A,C,B):}` `{:(i,ii,iii,iv),(D,C,A,B):}` ANSWER :A

42.	The correct match is
Answer» ANSWER :D

43.	The correct match is
Answer» A- II, B-III, C-i A -iii, B -i, C-ii A-ii, B-i, C-iii A-iii,B-ii,C-i Answer :B

44.	The correct match is
Answer» 1-C,2-E,3-A,4-B 1-C,2-E,3-B,4-A 1-C,2-B,3-E,4-A 1-B,2-A,3-E,4-B Answer :B

45.	The correct match is
Answer» `{:(A,B,C,D),(1,4,3,2):}` `{:(A,B,C,D),(1,2,3,4):}` `{:(A,B,C,D),(4,5,1,2):}` `{:(A,B,C,D),(2,5,3,1):}` ANSWER :3

46.	The correct match is
Answer» i-D,ii-A,iii-B,iv-C i-D,ii-B,iii-A,iv-C i-D,ii-A,iii-C,iv-B i-D,ii-C,iii-A,iv-B Answer :A

47.	The correct match is
Answer» A-5, B-1, C-2, D-3 A-4, B-1, C-2, D-5 A-4, B-1, C-5, D-2 A-5, B-3, C-2, D-1 ANSWER :2

48.	The correct match is
Answer» ANSWER :C

49.	The correct match is
Answer» `{:(A,B,C,D),(1,2,3,5):}` `{:(A,B,C,D),(2,4,3,1):}` `{:(A,B,C,D),(4,3,5,2):}` `{:(A,B,C,D),(5,1,4,3):}` ANSWER :4

50.	The correct match is
Answer» `C_(60)` - Buckminster fullerence `Na_(2) B_(4) O_(7). 4 H_(2) O` - Kemite Borazole - `B_(3) N_(3) H_(6)` All of these Answer :D