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 conversionof 1^(0)amine to 3^(0)amine . Theprocess involved maybe called .
Answer» reduction alkylation OXIDATION HYDROGENATION ANSWER :B

2.	The conversion of 2,3-dibromobutane to 2-butene with zinc and alcohol is :
Answer» REDOX reaction `alpha`-elimination `BETA`-elimination both `alpha`-elimination and redox reaction Answer :C

3.	The conversion can be effected by using the reagent
Answer» `H_(2)O_(3)` `O_(3)` ANSWER :D

4.	The continuum in an atomic spectrum is due to
Answer» INSTABILITY in EXCITED state interaction of ION with an atom uncertainty principle ionisation of atom. Answer :D

5.	The contribution of particle at the edge centre to a particular unit cell is
Answer» `1/2` `1/4` 1 `1/8` ANSWER :B

6.	The continuous etherification process will give _________.
Answer» only simpleethers only MIXED ETHERS only LOWERETHERS only HIGHER ethers ANSWER :A

7.	The contribution of particle at the edge centre to a particular unit cell is,
Answer» `(1)/(2)` `(1)/(4)` 1 `(1)/(8)` Solution : Each particle at EDGE CENTRE is surrounded by FOUR unit cells thus its contribution to each unit cell is `(1)/(4)`

8.	Name the monomers of Nylon-6,6.
Answer» BENZOIC acid and ETHYLAMINE Phthalic acid and HEXAMETHYLENE DIAMINE Adipic acid and hexamethylene diamine Phenol and adipic acid Answer :C

9.	The constant boiling mixture of two miscible liquids of a definite mole fraction is called ………………. .
Answer» SOLUTION :AZEOTROPE

10.	The constant 'a' in van der Waals' equation is maximum in
Answer» HYDROGEN Helium Oxygen AMMONIA ANSWER :D

11.	The consituent of the powerful explosive RDX is formed during the nitration of
Answer» toluene phenol glycerol urotropine Answer :D

12.	The consitutent particles in carborundum
Answer» atoms molecules `+ve IONS` `+ve` ions in a SEA of ELECTRONS ANSWER :A

13.	The consequences of global warming may be
Answer» increase in AVERAGE temperature of the earth MELTING of Himalayan glaciers increased BIOCHEMICAL oxygen demand eutrophication Solution :GLOBAL warming may RESULT in increase in average temperature of earth causing melting of Himalayan glaciers.

14.	The connect kinetic rate equation for the addition-elimination mechanism of nucleophilic aromatic substitution
Answer» RATE = k [ARYL halide][nucleophile] rate = k [aryl halide] rate = k [aryl halide]`["nucleophile"]^2` rate = k [nucleophile] SOLUTION :

15.	The conjugate base of serotonin (used as tranquilisers) is given as follows: How many basic groups present in following compound?
Answer» ANSWER :3,3 basic groups are `OVERSET(..)/(N)H_(2);-NH-;O^(-)`

16.	The connect difference between first and second-order reactions is that
Answer» a first - ORDER reaction can be catalyzed, a second-order reaction cannot be catalyzed the half-life of a first-order reaction does not depend on `[A]_(0)`, the half-life of a second-order reaction does depend on `[A]_(0)` the RATE of a first-order reaction does not depend on reactant concentrations, the rate of a second-order reaction does depend on reactant concentrations the rate of a first-order reaction does depend on reactant concentrations, the rate of a second-order reaction does not depend on reactant concentrations Answer :B

17.	The conjugate base of NH_(2)^(-) is
Answer» `NH_(3)` `NH^(2-)` `NH_(4)^(+)` `N_(3)^(-)` Solution :`NH_(2)^(-) HARR NH^(-2) + H^(+)` Conjugate acid, base pair.

18.	The conjugate base of OH^- ion is :
Answer» `H_2O` `O^(2-) `H_3O^+` `O^-` ANSWER :B

19.	The conjugate base of HSO_(3)^(-) is
Answer» `H_(2)SO_(3)` `SO_(2)` `SO_(3)^(2-)` `H_(2)S` SOLUTION :The conjugate base of `HSO_(3)^(-)` is `SO_(3)^(2-)` `underset("ACID")(HSO_(3)^(-)) hArr underset("conjugate base")(SO_(3)^(2-))+H^(+)`

20.	The conjugate base of NH_(2)^- is
Answer» `NH^-` `NH_3` `NH_3^+` `NH^2-` ANSWER :D

21.	The conjugate base of HBr is
Answer» `BR^(-)` `H^(+)` `Br` `H_(2)Br_(3)` ANSWER :A

22.	The conjugate base ofH_3PO_4 IS :
Answer» `H_3PO_4` `P_2O_5` `PO_4` `HPO_4^(2-)` ANSWER :D

23.	The conjugate base of H_2SO_4 in the following reaction is: H_2SO_4 + H_2O harr H_3O^+ + HSO_3^-4
Answer» `H_2O` `HSO_4^-` `H_3O^+` `SO_4^-2` ANSWER :B

24.	The conjugate base of H_3BO_3 is :
Answer» `B(OH)_4^-` `H_2BO_3^-` HBO_3^(2-) none Answer :A

25.	The conjugate base of H_3O^+is _____.
Answer» ANSWER :`H_2O`

26.	The conjugate base of H_(2)PO_(4)^(-) is
Answer» `H_(3)PO_(4)` `P_(2)O_(5)` `PO_(4)^(3-)` `HPO_(4)^(2-)` SOLUTION :`underset("Conjugate acid")(H_(2)PO_(4)^(-)) rarr H^(+) + underset("Conjugate base")(HPO_(4)^(2-))`

27.	The conjugatebaseof (CH_(3))_(2)NH_(2)^(+) is
Answer» `(CH_(3))_(2)` `(CH_(3))_(2)N^(+)` `(CH_(3))_(3)N^(+)` `(CH_(3))_(2)N^(-)` Solution :`(CH_(3))_(2) NH + H^(+)to (CH_(3))_(2) NH_(2)^(+)` conjugatebase CONJUGATEACID.

28.	The conjugate base of (CH_(3))_(3)NH^(+) is :
Answer» `(CH_(3))_(3)N` `(CH_(3))_(3)NH_(2)^(+)` `(CH_(3))_(3)NH` `(CH_(3))_(3)N^(+)`. Solution :`(CH_(3))_(3)NH^(+)overset(-H^(+))RARR(CH_(3))_(3)N`

29.	The conjugate base of (CH_(3))_(2)NH_(2)^(+) is
Answer» `CH_(3))_(3)` N `(CH_(3))_(2)NH` `(CH_(3))_(2)N^(-)` `(CH_(3))_(2)N^(+)` SOLUTION :`UNDERSET("ACID")((CH_(3))_(2))NH_(2)=underset("Conjugate BASE")((CH_(3))_(2)NH)+H^(+)`

30.	The conjugate base of CH_(3)O^(-) is
Answer» `H_(2)O` `CH_(3)O^(-)` `O^(2-)` `OH^(-)` ANSWER :B

31.	The conjugate base in the following reaction H_(2)SO_(4)+H_(2)O rarr H_(3)O^(+) + HSO_(4)^(-)
Answer» `H_(2)O` `HSO_(4)^(-)` `H_(3)O^(+)` `SO_(2)` Solution :

32.	The conjugate base of [Al(H_(2)O)_(3) (OH)_(3) is
Answer» `[A(H_(2)O)_(3)(OH)_(2)]^(+)` `[Al(H_(2)O)_(3)(OH)_(2)O]` `(Al(H_(2)O)_(3).(OH)_(3)]` `[Al(H_(2)O)_(2)(OH)_(4)]^(-)` ANSWER :D

33.	The conjugate base of [Al (H_2O)_3(OH)_3] is :
Answer» `[Al(H_2O)_3 (OH)_2]^+` `[Al(H_2O)_3 (OH)_2O]^-` `[Al(H_2O)_3 (OH)_3]^-` `[Al(H_2O)_2 (OH)_4]^-` Answer :D

34.	The conjugate acid of S_(2)O_(8)^(2-) is
Answer» `H_(2)S_(2)O_(8)` `H_(2)SO_(4)` `HSO_(4)^(-)` `HS_(2)O_(8)^(-)` Solution :`underset("conjugate acid")(HS_(2)O_(8)^(-)) hArr underset("conjugate base")(H^(+) + S_(2)O_(8)^(--))`.

35.	The conjugate acid of NH_(2)^(-) is
Answer» `NH_(3)` `NH_(4)^(+)` `NH_(2)OH` `N_(2)H_(4)` Solution :CONJUGATE ACID is OBTAINED from the base by gain of `H^(+)`.

36.	The conjugate acid of NH_(2)^(-) is :
Answer» `NH_(3)` `NH_(2)OH` `NH_(4)^(+)` `N_(2)H_(4)` ANSWER :A

37.	The conjugate acid of NH_2^- IS :
Answer» `NH_3` `NH_2OH` `NH_4^+` `N_2H_2` ANSWER :A

38.	The conjugate acid of NH_2 is
Answer» `NH_3` `NH_2 OH` `NH_4^+` `N_2H_4` ANSWER :A

39.	The conjugate acid of HPO_(4)^(2-) is
Answer» `H_(2)PO_(4)^(-)` `PO_(4)^(3-)` `H_(3)PO_(4)` `H_(3)PO_(3)` Solution :Conjugate acid is OBTAINED from the base by GAIN of `H^(+)`.

40.	The conjugate acid of HPO_(3)^(2-) is
Answer» `H_(3)PO_(4)` `H_(3)PO_(3)` `H_(2)PO_(3)^(-)` `PO_(4)^(3-)` SOLUTION :`underset("CONJUGATE acid")(H_(2)PO_(3)^(-) HARR H^(+) + HPO_(3)^(2-)` ACTION.

41.	The conjugate acid of HCO_3^- is _____.
Answer» ANSWER :`H_2CO_3`

42.	The conjugate acid of H_(2)PO_(4)^(-) is
Answer» `H_(3)PO_(4)` `H_(2)PO_(4)^(-)` `PO_(4)^(3-)` `H_(3)O^(+)` SOLUTION :`underset("Conjugate acid")(H_(3)PO_(4)) HARR H^(+) + H_(2)PO_(4)^(-)`.

43.	The conjugate acid of CO_3^(2-)
Answer» `H_2O` `H_2CO_3` `OH^-` `HCO_3^-` ANSWER :D

44.	The conjugate acid of H^- ion is :
Answer» `H_3O^+` `H_2` `OH^-` `H_2O` ANSWER :B

45.	The configuration of the given compound is
Answer» E R S Z Answer :B

46.	The conformations of n-butane, commonly known as eclipsed, gauche and anti-conformations can be interconverted by
Answer» rotation AROUND C-H bond of a methyl group rotation around C-H bond of a METHYLENE group rotation around Cl-C2 linkage RATATION around C2 - C3 linkage. Solution :Rotation around CENTRAL C-C (C2-C3), results in different conformations of n-butane.

47.	The configuration of the following is ……
Answer» 1S, 2S 1S, 2R 1R, 2S 1R, 2R Solution : CHANGE R to S since H i.e., atom of lowest PRIORITY is on horizontal axis.

48.	The configuration of eight compounds, a through h are shown below, using various kind of stereo representations. To answer the question given below. Write (a through h ) indicating your choice.
Answer» SOLUTION :A-d,H, B-d, C-f,h , D-h

49.	the configuration of an element 'X' is 4s^1 3d^10. The wrong statement regarding the element 'X' is
Answer» it forms COMPLEXES it exhibits variable valency it forms paramagnetic IONS only It can FORM COLOURED salts Answer :C

50.	The conductivity of strong electrolyte is ……….. .
Answer» INCREASE on dilutin slightly decrease on dilution does not change with dilution DEPEND UPON density of ELECTROLYTE itself. Answer :A