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 compounds which produce yellow precipitate with I_(2)//NaOH are-

Answer»

`ICH_(2)COCH_(2)CH_(3)`
`CH_(3)COOCOCH_(3)`
`CH_(3)CONH_(2)`
`CH_(3)CH(OH)CH_(2)CH_(3)`

Answer :A::D
Discussion
2.

The compounds which gives the most stable carbonium ion on dehydration is :

Answer»

`CH_(3)CH_(2)CH_(2)CH_(2)OH`
`CH_(3)-underset(OH"")underset(|"")(CHCH_(2)CH_(3))`
`CH_(3)-underset(CH_(3))underset(|)OVERSET(CH_(3))overset(|)(C)-OH`
`CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)OH`

ANSWER :C
Discussion
3.

The compound(s) which generate (s) N_(2), gas upon thermal decomposition below 300^(@)C is (are)

Answer»

`NH_(4)NO_(3)`
`(NH_(4))_(2)Cr_(2)O_(7)`
`Ba(N_(3))_(2)`
`Mg_(3)N_(2)`

Answer :B::C
Discussion
4.

The compounds which do not participate in Friedel Crafts reaction are-

Answer»




ANSWER :A::B::D
Discussion
5.

The compounds which exist as liquids are -

Answer»

`C_5H_(12)`
`C_3H_8`
`C_2H_6`
`C_7H_(16)`

ANSWER :A::D
Discussion
6.

The compounds which contains all the four 1^(@), 2^(@), 3^(@) and 4^(@) carbon atoms is

Answer»

2,3-dimethylpentane
3-chloro-2,3-dimethylpentane
2,3,4-trimethylpentane
3,3-dimethylpentane

Solution :
Thus all the FOUR TYPES of carbon atoms are PRESENT in this compounds.
Discussion
7.

The compounds which can be purified by steam distillation.

Answer»

Nitrobenzene
ANILINE
o-nitro-phenol
m-nitrophenol

Solution :a,B,C can be purified by STEAM DISTILLATION
Discussion
8.

The compounds which are coloured only due to charge transfer are

Answer»

`KMnO_4`
`K_2Cr_2 O_7`
`Fe(OH)_3`
 `CR(OH)_2`

Answer :A::B
Discussion
9.

The compounds which are coloured only due to change transfer are

Answer»

`KMnO_(4)`
`K_(2)Cr_(2)O_(7)`
`FE(OH)_(3)`
`Cr(OH)_(3)`

ANSWER :A::B
Discussion
10.

The compounds used to fix a dye to the fabric is known as

Answer»

MORDANT
Azeotrope
Bleaching agents
Lake

Answer :A
Discussion
11.

The compounds used in Solvay process are

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`Na_2SO_4`
`NACL`
`NH_3`
`CaCO_3`

SOLUTION :`NaCl, NH_3, CaCO_3`
Discussion
12.

The compounds used as refrigerant is are

Answer»

`CH_(2)F_(2)`
`C Cl_(4)`
`C_(2)F_(4)`
`CF_(2)Cl_(2)`

Answer :D
Discussion
13.

The compounds used as refrigerant are

Answer»

`NH_(3)`
`C Cl_(4)`
`CH_(2)F_(2)`
`CF_(4)`

Answer :A::C
Discussion
14.

The compounds used as refrant are:

Answer»

`NH_(3)`
`C Cl_(4)`
`CF_(4)`
`CF_(2)Cl_(2)`

Solution :`NH_(3)` and dichlordiouro MEHTANE are USED as refigernats.
Discussion
15.

The compounds that will give an isomer of 2, 2-dimethyl propane on catalytic hydrogenation are (1)CH_3CH=undersetunderset(CH_3)|C-CH_3 (2)CH_3CH=CHCH_3 (3)CH_3CH=CHCH_3 (4)CH_3undersetunderset(CH_3)|C=undersetunderset(CH_3)|C-CH_3

Answer»

1 and 4
2 and 4
1 and 3
1 and 2

Answer :C
Discussion
16.

The compounds used as gaseous insulation in high voltage generators is

Answer»

`SeF_(4)`
`SiF_(4)`
`SF_(4)`
`SF_(6)`

Solution :`SF_(6)^(-)` used as insulator in high VOLTAGE GENERATORS
Discussion
17.

The compounds used as refrigent are

Answer»

`NH_(3)`
`C Cl_(4)` is non-inflammable
`CF_(4)`
`CF_(2)Cl_(2)`

Solution :`NH_(3)` and dichlorodifluoro METHANE are used as refrigerant.
Discussion
18.

The compounds that exhibit(s) geometrical isomerism is (are):

Answer»

`[Pt(en)Cl_(2)`
`[Pt(en)_(2)]Cl_(2)`
`[Pt(en)_(2)Cl_(2)]Cl_(2)`
`[Pt(NH_(3))_(2)Cl_(2)]`

Answer :C::D
Discussion
19.

The compounds that gives white precipitates with AgNO_(3).

Answer»

`[Co(NH_(3))_(6)]Cl_(3)`
`[Co(NH_(3))_(3)Cl_(3)]`
`K_(2)[PT(en)_(2)Cl_(2)]`
`[FE(en)_(3)]Cl_(3)`

Solution :`[Co(NH_(3))_(6)]Cl_(3)+3AgNO_(3)to3AgCldarr+[Co(NH_(3))_(6)](NO_(3))_(3)`
`[Fe(en)_(3)]Cl_(3)+3AgNO_(3)toAgCldarr[Fe(en)_(3)](NO_(3))_(3)`
The COMPLEX is which `CL^(-)` ions present outside the []can give white ppt with `AgNO_(3)` solution.
Discussion
20.

The compounds that doesnot produce nitrogen gas by thermal decomposition is .........

Answer»

`Ba(N_(3))_(2)`
`(NH_(4))_(2)Cr_(2)O_(7)`
`NH_(4).NO_(2)`
`(NH_(4))_(2)SO_(4)`

ANSWER :D
Discussion
21.

The compounds shown below are

Answer»

LINKAGE ISOMERS
RESONATING forms
TAUTOMERS
Coordination isomers

Solution :The given structures are not isomers but represent resonstion forms.
Discussion
22.

The compounds (s) which generated (s) N_2 gas upon thermal decomposition below 300^(@)C is (are)

Answer»

`NH_(4)NO_(3)`
`(NH_(4))_(2)Cr_(2)O_(7)`
`Ba(N_(3))_(2)`
`Mg_(3)N_(2)`

Solution :(a) `NH_(4) NO_(3) overset(Delta)underset("below" 300^(@)C)to N_(2)O + 2H_(2)O`
`(b) (NH_(4))_(2) Cr_(2)O_(7) overset(Delta)to N_(2)+ Cr_(2)O_(3) + 4H_(2)O`
`(c) Ba(N_(3))_(2) overset(Delta)to Ba+ 3N_(2)`
(d) `Mg_(3)N_(2) ` (it does not decompose into `N_(2)`)
Discussion
23.

The compounds soluble in water

Answer»

METHYL amine
Acetone
FORMIC acid
1-pentanol

Solution :HIGHER ALCHOLS NOT SOLUBLE
Discussion
24.

The compounds (s) that can be obtained by vapour phase nitration of propane is

Answer»

2-Nitropropane
1-Nitropropane
Nitroethane
Nitromethane

Solution :NITRO COMPOUNDS
Discussion
25.

The compounds of Zn, Cd and Hg are usually white. (ii) A dark blue precipitate is formed when NaOH solution is added to CuSO_(4)

Answer»

Solution : In the compounds of zinc metals, `M^(2+)` ions possess the penultimate d-orbitalsdoubly OCCUPIED, i.e. `(n-1)d^(10)` configuration. There is no d-d transition. Hence the compounds of zinc metals are colourless
(i) NaOH reacts with `CuSo_(4)` when dark blue PRECIPITATE of `Cu(OH)_(2)` is FORMED. This precipitate of heating forms CuO which is BLACK in colour. Hence, the colour darkens on heating `CuSO_(4) + 2NaOH to Cu(OH)_(2) + Na_(2) SO_(4)`
`Cu(OH)_(2) tounderset(Black)(CuO) + H_(2)O`
Discussion
26.

The compounds [PtCl_(2)(NH_(3))_(4))]Br_(2) and [PtBr_(2)(NH_(3))_(4)]Cl_(2) constitutes a pair of

Answer»

COORDINATION isomers
linkage isomers
ionization isomers
optical isomers

Solution :`[PtCl_(2)(NH_(3))_(4)]Br_(1) and [PtBr_(2)(NH_(3))_(4)]Cl_(2)` are ionisation isomers.
Discussion
27.

The compounds P and Q were separately subjected to nitration using HNO_(3)//H_(2)SO_(4) mixture. The major product formed in each case respectively is

Answer»




SOLUTION :
`-OH` is ctivating and o-, p-directing, whereas `-COOH` is deactivating and m - directing.

Since `-OCH_(3)` is more activating, the SUBSTITUTION OCCURS at a position ortho to it.
Discussion
28.

The compounds obtained by the substitution of hydrogen by halogen in alkane series is ……..

Answer»

Aryl halides
ALKYL halides
CARBON halides
All of these

Answer :B
Discussion
29.

The compounds HCHO and CH_(3) CHO on intermolecular aldol condensation gives .

Answer»

`HO - CH_(2) - CH_(2) - CHO`
`CH_(3) - CHOH - CH_(2)OH`
`CH_(3) - CHOH - CH_(3)`
`CH_(3) - CHOH - CH_(2) - CH_(2) OH`

ANSWER :A
Discussion
30.

The compounds having a common difference of CH_(2) in their molecular formulae are known as :

Answer»

ISOMERS
Homologues
Polymers
Isostructural.

Answer :B
Discussion
31.

The compounds formed when excess of Cl_(2), reacts with NH_3 are

Answer»

`NCl_(3)+N_(2)`
`NH_(4)Cl+N_(2)`
`NCl_(3)+HCl`
`N_(2)Cl+HCl`

ANSWER :C
Discussion
32.

The compounds given are: Which of the following statements is/are correct ?

Answer»

Compounds (A) and(B) are (I) and (II), respectively.
Compound (I) is the MAJOR product at lower temperature when the reaction is under kinetic or rate control.
Compound (II) is the major product at high temperature when the reaction is under themo-dynamical or EQUILIBRIUM control.
Compound (II) is more stable.

Solution :NA
Discussion
33.

The compounds formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid, is

Answer»

freon
DDT
gammexene
Hexachloroethene

Solution :DDT is prepared by heating CHLORBENZENE and CHLORAL with concentrated SULPHURIC acid
Discussion
34.

The compounds formed by the acidby the acid hydrolysis of ethyl acetate are

Answer»

formic acid and propanol
ACETIC acid and ethanol
acetone and ethanol
acetone and METHANOL

Answer :B
Discussion
35.

The compounds [Cr(H_(2)O)_(6)]Cl_(3),[Cr(H_(2)O)_(5)Cl]Cl_(2)H_(2)O and [Cr(H_(2)O)_(4)Cl_(2)]Cl*2H_(2)O exhibits:

Answer»

LINKAGE isomerism
geometrical isomerism
ionization isomerism
hydrate isomerism

Answer :D
Discussion
36.

The compounds [Cr(H_(2)O)_(6)]Cl_(3) and : [Cr(H_(2)O)_(5)Cl]Cl_(2). H_(2)O are example of

Answer»

Linkage ISOMERISM
IONISATION isomerism
COORDINATION isomerism
HYDRATE isomerism.

ANSWER :D
Discussion
37.

The compounds [Co(SO_(4))(NH_(3))_(5)]Br and [Co(SO_(4))(NH_(3))_(5)]Cl represent

Answer»

LINKAGE ISOMERISM
IONISATION isomerism
COORDINATION isomerism
no isomerism

ANSWER :D
Discussion
38.

The compounds [CO(SO_(4)NH_(3))_(5) Br] and [[CO(SO_(4)NH_(3))_(5) ]Cl represent.

Answer»

LINKAGE isomerism
Ionisation isomerism
Coodrination isomerism
No isomerism

Answer :D
Discussion
39.

The compounds [Co(SO_(4))(NH_(3))_(5)]Br and [Co(SO_(4))(NH_(3)) _(5)]Cl represent

Answer»

LINKAGE isomerism.
ionisation isomerism.
coordination isomerism.
No isomerism.

Answer :D
Discussion
40.

The compounds [Co(NO_(2))(NH_(3))_(5)]Cl_(2) and [Co(ONO)(NH_(3))_(5)]Cl_(2) are examples of :

Answer»

Geometrical isomers
Ligand isomers
Ionisation isomers
LINKAGE isomers.

ANSWER :D
Discussion
41.

The compounds [Co(NO_2)(NH_3)_5]Cl_2 and [Co(ONO)(NH_3)_5]Cl_2 are examples of:

Answer»

GEOMETRICAL isomers
Linkage isomers
Ligand isomers
Ionisation isomers

Answer :B
Discussion
42.

The compounds CH_(3)-O-C_(3)H_(7) and C_(2)H_(5)-O-C_(2)H_(5)exhibit

Answer»

OPTICAL isomerism
cis-trans-isomerism
METAMERISM
CHAIN isomerism

Solution :metamerism
Discussion
43.

The compounds CH_(3)CH = CHCH_(3) and CH_(3)CH_(2)CH = CH_(2)

Answer»

Are tautomers
Are POSITION isomers
Contain same NUMBER of `sp^(3) - sp^(3), sp^(3) - sp^(2)` and `sp^(2) - sp^(2)` carbon-carbon BONDS
Exist together in dynamic equilibrium

Solution :The two isomers differ in the position of the double bond so they are called position isomers.
Discussion
44.

The compounds CH_3NH_2 and CH_3CH_2. NH_2 are :

Answer»

Isomers
Isobars
Homologues
Allotropes

Answer :C
Discussion
45.

The compounds CH_(3)COCH_(3)andCH_(2)=CH(OH)CH_(3) represent :

Answer»

FUNCTIONAL isomerism
position isomerism
metamerism
keto-enol tautomerism

Answer :D
Discussion
46.

The compounds CH_3-O-C_3H_7 and C_2H_5-O-C_2H_5 exhibit

Answer»

metamerism
chain ISOMERISM
optical isomerism
cis-trans isomerism

Solution :We KNOW that metamerism is a type of isomerism exhibited by members of the same homologous series due to the difference in the nature of alkyl groups such as attached to the POLYVALENT atom of the functional GROUP .
Discussion
47.

The compound(s) behaving both oxidizing as well as reducing agent is/are

Answer»

`H_(2)O_(2)`
`SO_(2)`
`HNO_(2)`
`HNO_(3)`

Answer :A::B::C
Discussion
48.

The compound(s), capable of producing achiral compound on heating at 100^(@)C "is" // "are"

Answer»




SOLUTION :
Discussion
49.

The compounds B and C , respectively are

Answer»




ANSWER :B
Discussion
50.

The compounds 'A' undergoes Koble's reaction in the presence of CO_(2) and NaOH to give compound 'B' . Compound 'B' when treated with acetic anhydride in acidic medium , gives acetylsalicylic acid i.e. aspirin. Identify the compound 'A' and 'B'.

Answer»

SALICYLADEHYDE, SALICYLIC ACID
PHENOL, salicylic acid
phenol, salicyladehyde
Phenol , Benzaldehyde

Answer :B
Discussion