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 compound in which carbon uses sp^(3) hydrid orbitals for bond formation is :

Answer»

`HCOOH`
`H_(2)NCONH_(2)`
`(CH_(3))_(3)COH`
`(CH_(3))_(3)C-CHO`

ANSWER :C
Discussion
2.

The compound in which carbon atom uses only its sp^ 3 - hybrid orbitals for bond formation is :

Answer»

HCOOH
`(H_2N)_2CO`
`(CH_3)_3COH`
`CH_3CHO`

ANSWER :C
Discussion
3.

The compound in which C* uses sp^(3) hybrid orbitals for bond formation is

Answer»

`HC*OOH`
`(NH_(2))_(2)C*O`
`(CH_(3))_(3)C*OH`
`CH_(3)C*HO`

SOLUTION :In `(CH_(3))_(3)C**OH C**` is attached to four groups and is `sp^(3)` hybridised.
Discussion
4.

The compound in which C uses its sp^3-hybrid orbitals for bond formation is:

Answer»

`H oversetxxC OOH`
`(H_3C)_2 oversetxxCO`
`(CH_3)_3oversetxxC OH`
`CH_3oversetxxC HO`

Answer :C
Discussion
5.

Thecompoundin whichC usesits sp^(2)hybridorbitalsfor bondformationis :

Answer»

`HCOOH`
`CH_(3) CHO`
`(CH_(3))_(3) COH`
`(NH_(2))_(2)CO.`

Answer :C
Discussion
6.

The compound ibuprofen is used as

Answer»

antiseptic
antibiotic
analgesic
pesticide.

Answer :C
Discussion
7.

The compound ibuprofen is used as.

Answer»

Antiseptic
Antibiotic
Analgesic
Pesticide 

ANSWER :C
Discussion
8.

The compound (I) is

Answer»




SOLUTION :
Discussion
9.

The compound HCl behaves as .......in the reaction, HCl + HF rarr H_(2)^(+)Cl + F^(-)

Answer»

Weak base
Weak ACID
Strong base
Strong acid

Solution :HCL is ACCEPTING PROTON in HF medium and acts as weak base.
Discussion
10.

The compound having the molecular formula C_3H_9N represents:

Answer»

TRIMETHYLAMINE
n-propylamine
ISOPROPYLAMINE
All the THREE

ANSWER :D
Discussion
11.

The compound (i) decolourises KMnO_4(ii) forms ozonide with ozone and (iii) undergoes polymerisation.It will be:

Answer»

`C_6H_6`
`C_3H_3`
`C_2H_4`
`C_2H_6`

ANSWER :A
Discussion
12.

The compound having S - S single bond is ..........

Answer»

`H_(2)S_(2)O_(3)`
`H_(2)S_(2)O_(4)`
`H_(2)S_(2)O_(7)` and `H_(2)S_(2)O_(8)`
`H_(2)S_(2)O_(8)`

ANSWER :B
Discussion
13.

The compound having tetrahedral geometry is

Answer»

`[NI(CN)_(4)]^(2-)`
`[Pd(CN)_(4)]^(2-)`.
`[PdCI)_(4)]^(2-)`
 `[NICI_(4)]^(2-)`

Solution :
Hybridization of `[NiCI_(4)]^(2-)= sp^(3)`
SHAPE of `[NicI_(4)]^(2-) = Tetrahedral`
Hence, (A) is the correct answer
Discussion
14.

The compound having one isopropyl group is:

Answer»

2,2,3,3,-tetramethylpentane
2,2-dimethylpentane
2,2,3-trimethylpentane
2-methylpentane

Answer :D
Discussion
15.

The compound having no dipole moment is:

Answer»

`CH_3Cl`
`C Cl_4`
`CH_2Cl_2`
`CHCl_3`

ANSWER :B
Discussion
16.

The compound having molecular formula C_4H_10O can show:

Answer»

Metamerism
Functional isomerism
Positional isomerism
All of the above

Answer :D
Discussion
17.

The compound having least solubility in water is :

Answer»

METHANOL
Acetaldehyde
Acetone
ACETOPHENONE

ANSWER :D
Discussion
18.

The compound having general formula M^(2+)Fe_(2)O_(4)^(2–) are called as :

Answer»

Ferrite
Spinels
Ferrimagnetic substance
Zeolite

Answer :A::B::C
Discussion
19.

The compound having both sp^2 and Sp^3hybridised carbon atom is:

Answer»

Propene
Propyne
Propediene
none of these

Answer :C
Discussion
20.

The compound having both sp and sp^2- hybridised carbon atom is :

Answer»

Propene
Propane
Propadiene
None of these

Answer :C
Discussion
21.

The compoundhaving maximum boilingpoint is :

Answer»

n-Pentane
n-Hexane
2,2- DIMETHYLPROPANE
2-Methylabutane

ANSWER :B
Discussion
22.

The compound formed when silver powder is heated with chloroform:

Answer»

`CH_4`
`C_2H_2`
`C_2H_4`
`C_2H_6`

ANSWER :A
Discussion
23.

The compound formed when malonic ester reacts with urea is :

Answer»

Cinnamic ACID
BUTYRIC acid
Barbituric acid
Crotonic acid

ANSWER :C
Discussion
24.

The compound formed when propyl magnesium bromide is treated with carbon dioxide is

Answer»

`C_(3)H_(7)COOH`
`C_(2)H_(5)COOH`
`C_(3)H_(7)CHO`
`C_(3)H_(7)OCH_(3)`

Answer :A
Discussion
25.

The compound formed when ethyl bromide is heated with dry silver oxide is

Answer»

Dimethyl ether
Diethyl ether
Methyl alcohol
Ethyl alcohol

Solution :`2C_(2)H_(5)Br+underset("DRY")(Ag_(2)O)to C_(2)H_(5)-O-C_(2)H_(5)+ 2AgBr`
If we take moist `Ag_(2)O` then alcohol is FORMED
`Ag_(2)O+H_(2)OTO 2AgOH`
`C_(2)H_(5)Br+ AGOH to C_(2)H_(5)OH + AgBr`
Discussion
26.

The compound formed when calcium acetate and calcium formate is dry distilled

Answer»

Acetone
Acetaldehyde
Benzaldehyde
Acetophenone

Solution :
Discussion
27.

The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid is:

Answer»

freon
DDT
gammexene
hexachloroethane.

Solution :The COMPOUND is DDT.
Discussion
28.

On heating sodium metal in a current of dry ammonia, the compound formed is

Answer»

SODIUM imide
sodium nitride
sodium amide
sodium azide

Answer :C
Discussion
29.

The compound formed on heating chlorobenzene with chloral in the presence of conc. sulphuric acid is

Answer»

GAMMEXENE
HEXA CHLORO ETHANE
freon
DDT

ANSWER :D
Discussion
30.

The compoundformed in the tailing of mercury byO_(3) is

Answer»

HGO
`Hg_(2)O`
`Hg_(2)O_(2)`
`HgO+Hg_(2)O`

ANSWER :B
Discussion
31.

The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is

Answer»

`Fe_(4)[Fe(CN)_(6)]_(3)`
`Na_(3)[Fe(CN)_(6)]`
`Fe(CN)_(3)`
`Na_(4)[Fe(CN)_(5)NOS]`

SOLUTION :Prussian blue `Fe_(4)[Fe(CN)_(6)]_(3)` is formed in LASSAIGNE test for NITROGEN
`3Na_(4)[Fe(CN)_(6)]+2Fe^(3+) to underset("prussian blue")(Fe_(4)[Fe(CN)_(6)]_(3)+12Na^(+))`
Discussion
32.

The compound formed in the positive test for nitrogen with Lassaigne's solution of an organic compound is

Answer»

`Na_4[FE(CN)_5NOS]`
`Na_3[Fe(CN)_6]`
`Fe(CN)_3`
`Fe_4[Fe(CN)_6]_3`

ANSWER :D
Discussion
33.

The compound formed in the borax bead test of Cu^(2+) ion in oxidising flame is :

Answer»

Cu
`CuBO_(2)`
`Cu(BO_(2))_(2)`
None of these

Answer :C
Discussion
34.

Thecompound formed in the borax berax test of Cu^(2+) in oxidising flame is

Answer»

CU
`CuBO_(2)`
`Cu(BO_(2))_(2)`
none ofthese

Answer :C
Discussion
35.

The compound formed in carbylamine test is:

Answer»

`C_6H_5C=N`
`C_6H_5N-=C`
`CH_3-O-C-=N`
`CH_3-N=C=O`

ANSWER :B
Discussion
36.

The compound formed in borax bead test of Cu^(2+)lon, in oxidizing flame is

Answer»

CUO
`Cu(BO_(2))`
`Cu(BO_(2))_2
 None

Answer :C
Discussion
37.

The compound formed by the reaction of ethyl chloride with a sodium-lead alloy at 400°C is:

Answer»

TETRAETHYL lead
Sodium ethoxide
Ethyl sodium
No reaction

Answer :A
Discussion
38.

The compound formed by reaction of ethylene glycol and periodic acid (HIO_4)is

Answer»

CARBONDIOXIDE
FORMIC acid
formaldehyde
GLYOXAL

ANSWER :C
Discussion
39.

The compound formed by reaction of 1, 1- dichloropropane with Zn can also be prepared by the following reaction

Answer»

3, 4-Dibromohexane with zinc
3-Bromohexane with alco. KOH
both of the above
None of above

Solution :1,1-Dichloro propane on REACTING with Zn gives 3 - hexene
`CH_(3)CH_(2)CHCl_(2)+Zn + Cl_(2)CHCH_(2)CH_(3) to CH_(3)-CH_(2)-CH = underset("3 - Hexene")(CH - CH_(2)-CH_(3))`
CHOICE (1) and (2) also give 3 - hexene
`CH_(3)-CH_(2)-underset(Br)underset(|)CH-underset(Br)underset(|)CH-CH_(2)CH_(3)+Zn to CH_(3)CH_(2)-CH = CH - CH_(2)CH_(3)`
`CH_(3)-CH_(2)-underset(Br)underset(|)CH-CH_(2)CH_(3) + alc.KOH to CH_(3)CH_(2) - CH = CH - CH_(2)CH_(3) + KBr + H_(2)O`
Discussion
40.

The compound form when PtF_(6) oxidised by oxygen d) both He and Ne is

Answer»

`PtO_(2)`
`O_(2)^(+)PtF_(6)`
`Pt^(+) F_(4)^(-)`
`PtOF_(4)`

Answer :B
Discussion
41.

The compound formed as a result of oxidation of ethyl benzene by KMnO_4 is

Answer»

Benzophenone
Acetophenone
Benzoic ACID
Benzyl alcohol

Solution :Any ALIPHATIC carbon with HYDROGEN attached to it, in combination with benzene ring , will be oxidized to benzoic acid by `KMnO_4//H^+`
HENCE(C ) is correct
Discussion
42.

The compound exhibiting maximum value of equivalent conductance in fused state is

Answer»

`SrCl_(2)`
`CaCl_(2)`
`MgCl_(2)`
`BeCl_(2)`

ANSWER :B
Discussion
43.

The compound exhibited maximum value of equivalent conductance in a fused state is

Answer»

`SrCl_(2)`
`CaCl_(2)`
`MgCl_(2)`
`BeCl_(2)`

Solution :`SR^(2+)` being the LARGEST in size, will be least hydrated . So, will show maximum conductivity.
Discussion
44.

The compound ethylisocyanide is prepared by the reaction between :

Answer»

`C_(2)H_(5)BR` and KCN
`C_(2)H_(5)Br` and AgCN
`C_(2)H_(5)Br` and HCN
`C_(2)H_(5)Br` and ammonia

Answer :B
Discussion
45.

The compounddoesno decarboxylateon simpleheatingis .

Answer»

`H_(3) C - CO - CH_(2) -COOH`


Answer :C
Discussion
46.

The compounds [Co(NO_2)(NH_3)_5]CI_2 and [Co(ONO)(NH_3)_5]CI_2 are examples of:

Answer»

GEOMETRICAL ISOMERS
Linkage isomers
Ligand isomers
IONISATION isomers

Answer :B
Discussion
47.

The compound condensation of

Answer»

ethyl - 2 - METHYL pentanoate
ethyl - 5 - methyl hexanoate
ethyl - 4 - methyl pentanoate
ethyl - 3, 3 - DIMETHYL butanoate

Solution :
Discussion
48.

The compound commonly used as electrolyte in lead storage batteries is :

Answer»

`CuSO_(4)`
`H_(2)SO_(4)`
Distilled water
`PbSO_(4)`

SOLUTION :REACT to FORM `PbSO_(4)`
Discussion
49.

The compound CHCl = CHCHOHCOOH with molecular formuls C_(4)H_(5)O_(3)Cl can exhibit

Answer»

GEOMETRIC, OPTICAL, POSITION and FUNCTIONAL ISOMERISM
Geometric, optical and functional isomerism only
Geometric and functional isomerism only
Geometric and optical isomerism only

Solution :
Discussion
50.

The compound CHCl-CHCHOHCOOH with molecular

Answer»

GEOMETRICAL, OPTICAL, POSITION and FUNCTIONAL ISOMERISM
geometricla, optical functional isomerism
position and functional isomerism only
geometrical and optical isomerism only

Answer :A
Discussion