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 colour of precipitate/residue in column-I with the reagent(s) listed in column-II.

Answer»


ANSWER :(a-r,t);(b-r,t);(c-q,s);(d-p)
Discussion
2.

Match the colour of ppt. listed in column-I with the reagent(s) is column-II.

Answer»


ANSWER :(a-p);(b-p,d),(c-R,t);(d-q,r,s)
Discussion
3.

Match the colomn I with column II and mark the appropriate choice. {:("Column I","Column II"),((A)"Used as lubricant",(i)"Carbon dioxide"),((B) "Oxide with three dimensional structure",(ii) "Grapite"),((C )"Used in solar cells",(iii) "Siica"),((D) "Anhydride of carbonic acid",(iv) "Silicon"):}

Answer»

(A) `to` (iv), (B) `to` (iii), (C ) `to` (II), (D) `to` (i)
(A) `to` (iv), (B) `to` (i), (C ) `to` (iii), (D) `to` (ii)
(A) `to` (iii), (B) `to` (ii), (C ) `to` (i), (D ) `to` (iv)
(A) `to` (ii), (B) `to` (iii), (C ) `to` (iv) , (D) `to` (i)

ANSWER :D
Discussion
4.

Match the chemical properties with the compounds:

Answer»


ANSWER :A-pqs ; B-pqr ; C-qr ; D-qrs
Discussion
5.

Match the bond enthalpies given in column II with the molecules given in column I and mark the appropriate choice. {:(,"Column I",,"Column II "),((A),"Hydrogen "(H_(2)),(i),498.0 " kJ mol"^(-1)),((B),"Oxygen"(O_(2)),(ii),946.0" kJ mol"^(-1)),((C),"Nitrogen"(N_(2)),(iii),435.8 " kJ mol"^(-1)):}

Answer»

`(A)to(i), (B)to(ii), (C) to (III)`
`(A) to (iii), (B) to (ii), (C ) to (i) `
`(A) to (i), (B) to (iii), (C ) to (ii)`
`(A) to (iii), (B) to (i), (C ) to (ii)`

SOLUTION :The order of bond enthalpies of the bonds is given asBond order `propto` Bond enthalpy
Hence, SINGLE bond enthalpy ` lt` double bond enthalpy ` lt` triple bond enthalpy
`H - H lt O = O lt N -= N`
Discussion
6.

Match the acids given in Column I with their correct IUPAC names given in Column II

Answer»


SOLUTION :
Discussion
7.

Match the average fundamental compounds with their proper percentage presentin Portland cement.

Answer»

1-d, 2-C, 3-b
1-b, 2-d, 3-a
1-d, 2-a, 3-b
1-c , 2-a, 3-d

ANSWER :C
Discussion
8.

Match the activity given in Column-I with the type of pollution created by it given in Column II.

Answer»


Solution :(A) Classical smog, ACID rain, WATER pollution, induce breathing problems, damage to building, CORROSION of metals.
(B) May cause nerve disease in human.
(C) Water pollution.
(D) Photochemical smog, damage to plant life, corrosion to building MATERIAL, induce breathing problems, water pollution.
(E) Damaging OZONE layer.
Discussion
9.

Match th r following columns :

Answer»


SOLUTION :N//A
Discussion
10.

Match (##SUR_CHE_XI_V02_C09_E02_057_Q01.png" width="80%">

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`{:(A,B,C),(1,2,3):}`
`{:(A,B,C),(2,1,3):}`
`{:(A,B,C),(3,1,2):}`
`{:(A,B,C),(3,2,1):}`

ANSWER :C
Discussion
11.

Match (##SUR_CHE_XI_V02_C09_E02_056_Q01.png" width="80%">

Answer»

`{:(A,B,C,D),(1,2,3,4):}`
`{:(A,B,C,D),(2,1,3,4):}`
`{:(A,B,C,D),(4,1,3,2):}`
`{:(A,B,C,D),(4,3,2,1):}`

ANSWER :A
Discussion
12.

Match standard free energy of the reaction with thecorresponding equilibrium constant {:((i) ,DeltaG^(Θ)gt0,,(a),K gt 1),((ii),DeltaG^(Θ) lt 0,,(b) ,K=1),((iii),DeltaG^(Θ) = 0 ,,(c),K=0),(,,,(d),K lt 1),(,,,,):}

Answer»


Solution :`DeltaG^(@)` = - RT ln K
(i) If `DeltaG^(@) GT 0`, i.e., `Delta^(@)` is +ve, then ln K is -ve, i.e., `K lt 1` . HENCE, (i)-(d).
(ii) If `DeltaG^(@) lt 0`, i.e., `DeltaG^(@)` is -ve, then ln K is +ve, i.e., `K gt 1`. Hence, (ii) -(a).
(iii) If `DeltaG^(@)= 0`, lnK = 1 , i.e., K = 1. Hence, (iii)-(b).
Discussion
13.

Match (##SUR_CHE_XI_V02_C09_E02_055_Q01.png" width="80%">

Answer»

`{:(A,B,C,D),(1,2,3,4):}`
`{:(A,B,C,D),(2,1,3,4):}`
`{:(A,B,C,D),(4,1,3,2):}`
`{:(A,B,C,D),(4,3,2,1):}`

ANSWER :A
Discussion
14.

Match standard free energy of the reaction with the corresponding equilibrium constant

Answer»


Solution :As we know that, `DeltaG^ө`=-RT ln K
(A)If `DeltaG^ө gt 0`, i.e., `DeltaG^ө` is POSITIVE , then ln K is negative i.e., `K lt 1`
(B) If `DeltaG^ө lt 0`, i.e., `DeltaG^ө` is negative then ln K is positive i.e., `K gt 1`
(C) if`DeltaG^ө`=0, ln K=0, i.e., K=1
Discussion
15.

Match species given in Column I with electronic configuration given in Column II {:("Column I","Column II"),((i) Cr,(a) [Ar] 3d^(8) 4s^(0)),((ii) Fe^(2+),(b) [Ar] 3d^(10) 4s^(1)),((iii) Ni^(2+),(c) [Ar] 3d^(6) 4s^(0)),((iv)Cu,(d) [Ar] 3d^(5) 4s^(1)),(,(e) [Ar] 3d^(6) 4s^(2)):}

Answer»


Solution :`Cr = [AR] 3d^(5) 4s^(1), FE^(2+) = [Ar] 3d^(6) 4s^(2), Ni^(2+) = [Ar] 3d^(8) 4s^(6), CU = [Ar] 3d^(10) 4s^(1)`
Discussion
16.

Match species given in Column-I with the electronic configuration given in Column-II

Answer»

Both A and R are TRUE and R is the CORRECT EXPLANATION of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
Both A and R are false.

Solution :(i-d ) , (ii-c ), (iii-a ), (iv-b )
Discussion
17.

Match Section - I with Section - II and select proper option :

Answer»

IR, 2S, 3P, 4T
1R, 2S, 3T, 4P
1R, 2S, 3T, 4Q
1R, 2T, 3S, 4P

ANSWER :C
Discussion
18.

Match reactions written in List-I with their mechanism in List -II.

Answer»


ANSWER :A::B::C::D
Discussion
19.

Match of column I with column II

Answer»

<P>

ANSWER :[(A) R, (B) Q,(C) S , (D)P]
Discussion
20.

Match of column :

Answer»


ANSWER :[(a) II (b) v (c) IV (d) I , iv (e) I, III]
Discussion
21.

Match of column :

Answer»


ANSWER :[(A)P,(B)R,(C)Q,(D)R]
Discussion
22.

Match list I with list II. Choose the correct matching codes from the choices given. {:(,"List I",,"List II"),(,"(Hydride)",,"(Type of hydride)"),(A.,BeH_(2),1.,"complex"),(B.,AsH_(3),2.,"Lewis acid"),(C.,B_(2)H_(6),3.,"Interstitial"),(D.,LaH_(3),4.,"Covalent"),(E.,LiAlH_(4),5.,"Intermediate"):}

Answer»

A-6, B-2, C-4, D-5, E-1
A-6, B-2, C-4, D-3, E-1
A-6, B-4, C-2, D-3, E-5
A-5, B-4, C-2, D-3, E-1

Solution :A-5, B-4, C-2, D-3, E-1.
Complex : Addition compounds which do not give all their constituent ions when dissolved in water. Here, the individual properties of ions are e.g., `[Cu(NH_(3))_(4)]SO_(4), LiAlH_(4)`.
Lewis acid : Electron DEFICIENT species which gain electrons while forming a bond with Lewis bases.

`B_(2)H_(6)+2NH_(3)overset("low temp.")rarr B_(2)H_(6).2NH_(3)` (adduct)
Interstitial metallic hydrides : Many f-block hydrides are non-stoichimetric, e.g., `LaH_(n), TiH_(n)`, ETC. where the chemical composition is variable e.g., `LaH_(2.87), YbH_(2.5)`, etc. Such compounds are called interstitial compounds. `BeH_(2)` : Intermediate hydride and polymeric in nature. `AsH_(3)` : Covalent.
Discussion
23.

Match List-I with List-II and select the correct answer using the codes given below the lists: {:(,"List-I (Compound)",,"List-II"),((a),B_(4)C,(1),"Propyne preparation"),((b),Al_(4)C_(3),(2),"Abrasive"),((c),Mg_(2)C_(3),(3),"Methane preparation"),((d),WC,(4),"Interstitial carbides"):}

Answer»


ANSWER :(a) 2 (b) 3 (C) 1 (d) 4
Discussion
24.

Match List-I with List-II and select the correct answer using the codes given below the litsts.

Answer»

`{:(A,B,C,D),(3,1,4,2):}`
`{:(A,B,C,D),(2,5,3,1):}`
`{:(A,B,C,D),(1,3,2,4):}`
`{:(A,B,C,D),(4,2,1,5):}`

ANSWER :A
Discussion
25.

Match list I with list II and select the correct answer using the codes given below the lists:

Answer»

`{:(A,B,C,D),(I,II,IV,V):}`
`{:(A,B,C,D),(III,I,V,IV):}`
`{:(A,B,C,D),(III,II,I,V):}`
`{:(A,B,C,D),(I,IV,III,II):}`

Answer :B
Discussion
26.

Match List I with ListII and select the correct answer using the codes given below the lists:

Answer»

(I-c), (II-a), (III-d), (IV-b)
(I-d), (II-b), (III-c), (IV-a)
(I-c), (II-b), (III-d), (IV-a)
(I-d), (II-a), (III-c), (IV-b)

SOLUTION :Cyanide process is used for the extraction of AU. Floatation process is used for the concentration of sulphide ores. It uses PINE oil.
Electrolytic reduction is used for the extraction of Al. ZONE refining is used to get ultrapure GE.
Discussion
27.

Match list I with list II and select the correct answer using the codes given below the lists :

Answer»

`{:(A,B,C,D),(IV,III,I,II):}`
`{:(A,B,C,D),(IV,III,I,II):}`
`{:(A,B,C,D),(IV,I,III,II):}`
`{:(A,B,C,D),(II,III,I,IV):}`

ANSWER :D
Discussion
28.

Match List-I with List-II and select the correct answer from the codes given belows the lists.

Answer»


SOLUTION :PROPERTIES of BENZENE
Discussion
29.

Match list I with list II and choose the correct answer from the codes Code

Answer»

`{:(a,B,C,d,),(I,II,III,IV,):}`
`{:(a,b,c,d,),(IV,I,II,III,):}`
`{:(a,b,c,d,),(IV,I,III,II,):}`
`{:(a,b,c,d,),(III,I,II,IV,):}`

SOLUTION :
Discussion
30.

Match List I (substance) with List II (processes) employed in the manufacture of the substance and select the correct option. {:("List - I (Substances)","List - II (Processes)"),("A) Sulphuric acid","i) Haber's process"),("B) Steel","ii) Bessemer's process"),("C) Sodium hydroxide","iii) Leblanc process"),("D) Ammonia","iv) Contact process"):}

Answer»

`(A-i),(B-iv),(C-ii),(D-iii)`
`(A-i),(B-ii),(C-iii),(D-iv)`
`(A-iv),(B-iii),(C-ii),(D-i)`
`(A-iv),(B-ii),(C-iii),(D-i)`

ANSWER :D
Discussion
31.

Match List I (Reaction) with List II (Type of reaction ) and select the correct answer using the code given below the lists :

Answer»

<P>`{:(P,Q,R,S),(1,3,4,2):}`
`{:(P,Q,R,S),(3,4,2,1):}`
`{:(P,Q,R,S),(1,3,2,4):}`
`{:(P,Q,R,S),(2,3,4,1):}`

ANSWER :D
Discussion
32.

Match List I (Reaction) with List II (Type of reaction ) and select the correct answer using the code given below the lists :

Answer»

<P>`{:(P,Q,R,S),(4,2,1,3):}`
`{:(P,Q,R,S),(2,4,3,1):}`
`{:(P,Q,R,S),(3,1,2,4):}`
`{:(P,Q,R,S),(2,1,4,3):}`

ANSWER :B
Discussion
33.

Match list I (reaction) with list II (Reagent) and select the correct answer using the codes given below :

Answer»

<P>

Solution :(a)I.`CrO_(2)Cl_(2)to` reagent in etardII. `CH_(2)=p(Ph)_(3)(R) ` wittig reagent
III. `ALPHA `-HALO ester+ ` Zn to` Reformatskyiv .hydrozoicacid Schmidt reaction
Discussion
34.

Match List I (Reaction ) with List II (Type of reaction ) and select the correct answer using the code given below the lists :

Answer»

<P>`{:(P,Q,R,S),(2,1,3,4):}`
`{:(P,Q,R,S),(3,2,1,4):}`
`{:(P,Q,R,S),(4,2,1,3):}`
`{:(P,Q,R,S),(3,1,4,2):}`

ANSWER :D
Discussion
35.

Match List I (Molecules) with List II (Bond order)and select the correctanswer using the codes.

Answer»

I - B, II - C, III - A, IV - E
I - C, II - A, III - D, IV - E
I - D, II -A, III - E, IV -C
I - C,II - B, III - E, IV -A

Solution :Bond order `= 1/2 (N_b - N_a)`
Bond order of `Li_2 = 1, N_2 = 3, Be_2 = 0, O_2 = 2`
Discussion
36.

Match List -I , List -II & List -III:

Answer»


ANSWER :[(a)-4-(III); (b-3-iv); (c-2-ii);(d-1-i)]
Discussion
37.

Match List-I, II and III. Find the correct answer from the code given below:

Answer»

1-S-T, 2-P-U, 3-Q-W
1-Q-U, 2-S-T, 3-R-W
1-Q-W, 2-P-V, 3-R-U
1-Q-W, 2-S-T, 3-R-U

ANSWER :C
Discussion
38.

Match List-I (Compounds) with List-II (% meta electrophilic substitution product ) and select the correct answer using the code given below the lists :

Answer»

<P>`{:(P,Q,R,S),(1,3,2,4):}`
`{:(P,Q,R,S),(3,4,2,1):}`
`{:(P,Q,R,S),(4,2,3,1):}`
`{:(P,Q,R,S),(2,1,3,4):}`

Solution :EWG GROUPS are meta directing.
Discussion
39.

Match List-1 (ion/radical) with List-II (stabilisation) and select the correct answer using the codes given below the lists {:("List-I", "List-II"), ("A) "C(CH_(3))_(3)" (Free radical)", "1) Inductive effect"), ("B) "PHO^(-), "2) Hyperconjugation"), ("C) "^(+)CH_(2)C(CH_(3))_(3), "3) Resonance"):}

Answer»

A-1, B-2, C-3
A-2,B-1,C-3
A-3,B-1,C-2
A-2,B-3,C-1

Answer :D
Discussion
40.

Match each of the following quantum number values with the proper letter designation (K,L.M,N,s,p,d,f):

Answer»

`n=1`
`l=2`
`l=0`
`n=3`

ANSWER :A::B::C::D
Discussion
41.

Match each of the following compound in column-I with the characteristic reaction in column-II

Answer»


ANSWER :A::B::C::D
Discussion
42.

Match each of the following isomer with the correct boiling point and melting point. Explain your choice Compounds: 2,2,3,4-tetramethyl butane and n-octane Boiling point: 106.5^(@),125.7^(@)C Melting piont: -56.8^(@)C,+100.7^(@)C

Answer»


Answer :`B.P.to` LESS SURFACE AREA, less B.P.
`M.P.to` More COMPACT PACKING more M.P.
Discussion
43.

Match each of the compounds in Column I with its characteristic reaction (s) in Column-II

Answer»

<P>

ANSWER :A- p, q, s, t; (B) - s, t; (C) - p; (D) - R
Discussion
44.

Match each List-I with List-II and select the correct answer using the code given below the lists.

Answer»

<P>`{:(P,Q,R,S),(3,1,2,4):}`
`{:(P,Q,R,S),(1,2,4,3):}`
`{:(P,Q,R,S),(2,1,3,4):}`
`{:(P,Q,R,S),(3,2,1,4):}`

ANSWER :a
Discussion
45.

Match compounds of coloumn-I with their uses given in coloumn-II, and select the correct option.

Answer»

`(i) to s, (ii) to p, (iii) to Q, (iv) to r`
`(i) to q, (ii) to s, (iii) to p, (iv) to r`
`(i) to r, (ii) to s, (iii) to p, (iv) to q`
`(i) to r, (ii) to s, (iii) to q, (iv) to p`

Solution :(i) `CaCO_(3) to (s)` as a filler in cosmetic
(ii) `NAOH to (p)` in the preparation of FLATS and oil
(iii) `Ca(OH)_(2) to (q)` In the PURIFICATION of fats and oil.
(iv) `NaHCO_(3) to (r )` as a fire extinguisher
Discussion
46.

Match compound of List -I with pKa of List -II

Answer»


SOLUTION :
`2Ph-CH_(2)CHO to`
Discussion
47.

Match Column-I with List-II and select the correct answers: {:("Column-I ","Column-II "),("A) Critical temperature ","P) "a/(ab) ),("B) Boyle temperature ","Q) "(2a)/(Rb) ),("C) Inversion temperature ","R) " (T)/(T_c) ),("D) Reduced temperature","S) " (8a)/(27 Rb)):}

Answer»


SOLUTION :`T_C = (8A)/(27 RB) , T_b = a/(Rb) , T_i = (2A)/(Rb) , T_r = T/(T_C)` .
Discussion
48.

Match column I withColumn II for the oxidation states of the central atoms {:(,"Column I","Column II"), ((i),Cr_(2)O(7)^(2-),(a)+3), ((ii),MnO_(4)^(-),(b)+4),((iii),VO_(3)^(-),(c)+5),((iv),FeF_(6)^(3-),(d)+6),(,,(e)+7):}

Answer»

Solution :(i) O.N of Cr in `Cr_(2)O__(7)^(21-)=+6`
(ii) O.N Of Mn `MnO_(4)^(-)=+7`
(iii) O.N of V in `O_(3)^(-)=x+3(-2)=-1 or x=+5`
(IV) O.N of F in `FeF_(6)^(3-)=x+6(-1)=-3 or x=+3` THUS correct matching is `(i) rarr(d),(ii)rarr(e ),(iii)rarr(c ),(iv)rarr(a)`
Discussion
49.

Match column I with column II {:("Column I",,"Column II"),("Compounds",,"Number of optically active isomer"),("(A) Unsymmetrical compound with 'n' chiral carbon",,"(P) " 2^(n-1)),("(B) Symmetrical molecule with 'n' chiral carbon when n is even",,"(Q) " 2^(n-1)-2^(n-1//2)),("(C) Symmetrical molecule with 'n' chiral carbon when n odd",,"(R) " 2^(n)):}

Answer»

<P>

ANSWER :[(A)R,(B)P,(C)Q]
Discussion
50.

Match Column I with Column II. {:(,"Column I ",,,"Column II"),((i) ,"Equilibrium",,(a),Delta Ggt 0 ","K lt 1),((ii),"Spontaneous reaction",,(b),DeltaG=0),((iii),"Non-spontaneous reaction",,(c),Delta G ^(Θ)=0),(,,,(d),DeltaG lt 0 "," K gt 1):}

Answer»


Solution :(i) When reaction is in equilibrium, `DELTA G = 0 `. Hence, (i)-(b).
(II) For spontaneous reaction, `Delta G lt 0 (-ve), K gt 1`. Hence (ii)-(d).
(iii) For non-spontaneous reaction, `Delta G gt 0 (+ve), K lt 1`. Hence (iii) - (a).
Discussion