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 which does not show paramagnetism is:

Answer»

`[Cu(NH_3)_4]CI_2`
`[Ag(NH_3)_2]CI`
NO
`NO_2`

ANSWER :B
Discussion
2.

The compound whichdoes not show paramagnetism?

Answer»

`[Cu(NH_(3))_(4)Cl_(2)]`
`[Ag(NH)_(3))_(2)]Cl`
NO
`NO_(2)`

Solution :`[Ag(NH_(3))_(2)Cl implies d^(10) " CONFIGURATION "`
Discussion
3.

The compound which does not reduce Fehling's solution is _________

Answer»

formaldehyde
acetaldehyde
benzaldehyde
propionaldehyde

Answer :C
Discussion
4.

The compound which does not show paramagnetism:

Answer»

`[Cu(NH_3)_4]Cl_2`
`[AG(NH_3)_2]Cl`
`NO`
`NO_2`

ANSWER :B
Discussion
5.

The compound which does not react with sodium is

Answer»

`C_(2)H_(5)OH`
`CH_(3)-O-CH_(3)`
`CH_(3)COOH`
`CH_(3)-CHOH0-CH_(3)`

SOLUTION :`Ch_(3)-OCH_(3)` does not have REPLACEABLE H-atom
Discussion
6.

The compound which does not react with sodium is :

Answer»

Ethanol
dimethyl ether
Acetic Acid
Isopropanol

Answer :B
Discussion
7.

Thecompound , whichdoes notreactwith CH_(3)COCl is

Answer»

`RNH_(2)`
`R_(2)NH`
`R_(3)N`
all of these

Solution :Becauseof absenceof hydrogenatomattached to nirogen atom.
Discussion
8.

The compound which does not possess a peroxide linkage is

Answer»

`Na_(2)O_(2)`
`CrO_(5)`
`H_(2)SO_(5)`
`PbO_(2)`

ANSWER :D
Discussion
9.

The compound which does not give a crystalline product on reaction with either sodium bisulphite or 2,4-DNP but reduces ammoniacal silver nitrate solution is:

Answer»

`C_(6)H_(5)CHO`
`C_(6)H_(5)CH_(2)OH`
H-OVERSET(O)overset(||)C-OH `
`CH_(3)CHO`

ANSWER :C
Discussion
10.

The compound which does not form a red precipitate on reacting with ammoniacal cuprous chlorides solution is

Answer»

`HC-=CH`

`C_6H_5C-=CH`
`(CH_3)_2CHCH_2C-=CH`

ANSWER :B
Discussion
11.

The compound which does not contain halogen but gives positive Beilstein's test is

Answer»

Hydrazine
Aniline
UREA
Sodium thiosulphate

Solution :Urea GIVES POSITIVE Beilsten.s TEST.
Discussion
12.

The compound which does not contain an asymmetric carbon atom is

Answer»

Glycoaldehyde
Glyceraldehyde
Glucose
Galactose

Answer :A
Discussion
13.

The compoundwhich does not contain an asymmetriccarbonatom is ……… .

Answer»

GLYCERALDEHYDE
glycine
GLUCOSE
FRUTOSE

ANSWER :B
Discussion
14.

The compound, which does not contain a peroxy linkage is

Answer»

`H_(2)SO_(5)`
`HClO_(4)`
`H_(3)PO_(5)`
`H_(2)S_(2)O_(8)`

Answer :B
Discussion
15.

Thecompoundwhichdo nothaveany primaryhydrogenatoms is:

Answer»

BUTANE
ISOBUTANE
CYCLOHEXANE
2,3 - dimethybutane

ANSWER :C
Discussion
16.

The compound which contains both ionic and covalent is

Answer»

`CH_(4)`
`CS_(2)`
KCN
KCl

Solution :`K^(+)C^(@) N^(-)` has both ionic COVALENT BONDS.
Discussion
17.

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

Answer»

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

Solution :`UNDERSET("3-chloro-2,3-dimethylpentane")(overset(1^(@))(C)H_(3)-underset(3^(@))overset(.^(1^(@))CH_(3))overset(|)(C)H-underset(Cl)underset(4^(@)|)overset(.^(1^(@))CH_(3))overset(|)(C)-overset(2^(@))(CH_(2))-overset(1^(@))(CH_(3))`
Discussion
18.

The compound which contains all the four 1^(@),2^(@),3^(@) and 4^(@) carbon atom is:

Answer»

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

ANSWER :B
Discussion
19.

The compound which cannot be used as a plasticizer , is

Answer»

di-n-butylphthalate
tricresyl phosphate
di-n-octylphthalate
diethyl phthalate

Solution :GENERALLY high boilingesters or HALOALKANES act asplasticiser. SINCE, diethyl phthalatehas lower BOILINGPOINT hence it cannot be used as a PLASTICISER among the given .
Discussion
20.

The compound which can form intramolecular hydrogen bond is :

Answer»

m-Hyroxy BENZALDEHYDE
SALICYLALDEHYE
Benzaldehyde
p-Hydroxy benzaldehyde

Answer :B
Discussion
21.

The compound which affects the ozone layer is

Answer»


CYANO compound
iodo COMPOUNDS
none of these

Solution :CHLORO compounds
Discussion
22.

The compound used in the production of Freon refrigerant , R- 22 is

Answer»

methylene chloride
chloroform
iodoform
cabon tetra chloride

Solution :Chlorodifluoromethane or difluromonochlromethane is a hydrochloroflurocarbon (HCFC). This COLORLESS GAS in better known as HCFC - 22, or R - 22 . IT is commonly used as a propellant and refrigerant . R - 22 is PREPARED from chloroform `CHCl_3+2HF rarrCHF_2Cl+2HCl`
Discussion
23.

The compound used in the quanlitative and quantitative analysis of carbon and hydrogen in the organic compound is

Answer»

`ZnO`
FeO
`Fe_(2)O_(3)`
CUO

Solution :Organic compound is HEATED with CuO.
Discussion
24.

The compound used in the preparation of the tranquilizer, sulphonal is _______

Answer»

acetone
acetophenone
isopropyl alcohol
glycol

Answer :A
Discussion
25.

The compound used in the preparation of triphenyl methane dye is _____

Answer»

methanol
phenyl methanal
phenyl methanol
ethanal

Answer :B
Discussion
26.

The compound used in the manufacture of butyl rubber is

Answer»

Ethylene
Vinyl CHLORIDE
ISOBUTYLENE
ADIPIC acid

Answer :C
Discussion
27.

The compound used in the manufacture of terylene is:

Answer»

PHTHALIC acid
Caprolactam
p-benzene dicarboxylic acid
none

Answer :C
Discussion
28.

The compound used in preservation of wood is:

Answer»

`NACL`
`HgCl_2`
`ZnCl_2`
`CaCl_2`

ANSWER :C
Discussion
29.

The compound used in etching of glass is

Answer»

HF
`CHCIO_(4)`
`NHO_(3)`
`H_(2)SO_(4)`

ANSWER :A
Discussion
30.

The compound used in lead accumulators is

Answer»

`Pb_(2)O_(3)`
`PbO_(3)`
`PbO_2`
`PbO_(4)`

ANSWER :B
Discussion
31.

The compound used in lead accumulators is :

Answer»

PBO
`Pb_2O_3`
`Pb_3O_4`
`PbO_2`

ANSWER :D
Discussion
32.

The compound used in enrichment of uranium for nuclear power plant is

Answer»

`U_3 O_8`
`UF_6`
`UO_2(NO_3)_2`
`UCl_4`

ANSWER :A
Discussion
33.

The compound used for preparation of UF_(6) in the enrichment of ._(92)U^(235) is

Answer»

`AlF_(3)`
`CaF_(2)`
`HF`
`ClF_(3)`

Solution :Inter halogen compound, `ClF_(3)` is used for making `UF_(6)`
`U_((s)) + 3 ClF_(3) (l) RARR UF_(6(G)) + ClF_((g))`
Discussion
34.

The compound used for preservation of milk is:

Answer»

`O_3`
`H_2O_2`
Formalin
Few DROPS of DIL.`H_2SO_4`

ANSWER :B
Discussion
35.

The compound used for the preparation of UF_(6) in the enrichmenet of ""_(92) U^(235) is

Answer»

`AlF_(3)`
`CaF_(2)`
HF
`CIF_(3)`

Solution :`underset("(5)")(u) + underset("(I)")(3Clf_(2)) rarr underset("(9)")(4F_(6)) + underset("(9)")(3ClF)`
Discussion
36.

The compound used as refrigerant is:

Answer»

`CCl_4`
`COCl_2`
`CF_4`
`CF_2Cl_2`

ANSWER :B
Discussion
37.

The compound used as refrigerant are:

Answer»

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

SOLUTION :both `NH_(3) and CF_(2)Cl_(2)` are used as REFRIGERANTS.
Discussion
38.

The compound used as an explosive is

Answer»

2,4,6-tribromoaniline
1,3,5-trinitrobenzene
2,4,6-trichlorotoluene
1,3,5-trichlorobenzene

Solution :TNT is USED as an EXPLOSIVE
Discussion
39.

The compound used against pain

Answer»

BHA
BHT
aspirin
DDT

Answer :C
Discussion
40.

The compound (U) is (the major isomer is ):

Answer»




SOLUTION :
Discussion
41.

Which compoundis used as fluxin metallurgy ?

Answer»

BORON nitride
Boron oxide
Boron fluoride
Borax

Answer :D
Discussion
42.

The compound tht cannot be formed by xenon is

Answer»

`XeO_3`
`XeF_4`
`XeCl_4`
`XeO_2F_2`

ANSWER :C
Discussion
43.

The compound that attacks pyrex glass is

Answer»

`XeF_2`
`XeF_4`
`XeF_6`
None

Answer :C
Discussion
44.

The compound that would produce a nauseatingsmell//odour with a hot mixture of chloroform and ethanolic potassium hydroxide is

Answer»

`PhCONH_(2)`
`PhNHCH_(3)`
`PhNH_(2)`
PhOH

Solution :`1^(@)` aliphatic/aromatic amines react with chloroform in presence of ALCOHOLIC KOH to give isocyanides which have nauseatign smell/odour.
`pH-NH_(2)overset(CHCl_(3))underset("KOH (alc.)")RARR Ph - Noverset(rarr)=C`
This reaction is KNOWN as carblamine reaction.
Discussion
45.

The compound that will react most readily with NaOH to form methanol is

Answer»

`(CH_(3))_(4)N^(+)I^(-)`
`CH_(3)OCH_(3)`
`(CH_(3))_(3)S^(+)I^(-)`
`(CH_(3))_(3)C Cl`.

Solution :Due to greater electronegativity of N over S, +ve charge on N will make `CH_(3)` group more electron DEFICIENT than +ve charge on S. THEREFORE, `(CH_(3))_(4)N^(+)I^(-)` will undergo nucleophilic substitution reaction more READILY than `(CH_(3))_(3)S^(+)I^(-)`
Discussion
46.

The compound that will react most readily with NaOH to form methanol is :

Answer»

`(CH_(3))_(4)N^(+)I^(-)`
`CH_(3)OCH_(3)`
`(CH_(3))_(3)S^(+)I^(-)`
`(CH_(3))_(3)C CL`

Solution :N//A
Discussion
47.

The compound that will react most readily with NaOH to forman alcohol is ____________.

Answer»

`CH_3Br`<BR>`CH_3-CH_2-CH_2-Br `
`CH_3-UNDERSET(Br)underset(|)CH-CH_3`
`(CH_3)_3CBr `

ANSWER :D
Discussion
48.

The compound that will react most readily with NaOH to from methanol is

Answer»

`(CH_(3))_(4)N^(+)I^(-)`
`CH_(3)OCH_(3)`
`(CH_(3))_(3)S^(+)I^(-)`
`(CH_(3))_(3)CI`

Solution :It isunderstoodfrom previous lessons that positive NITROGEN is a stronger ACID as compared to positive sulphur, and shall accept the ELECTRON pair more readily on an internal nucleophilicattack of the `OH^(+)` ion.
`(CH_(3))_(4)N^(+)I^(-)+NAOH rarr (CH_(3))_(4)N^(+)OH^(-)+NaI,(CH_(3))_(4)N^(+)OH^(-) overset(Delta)rarr (CH_(3))_(3)N+CH_(3)OH`
Discussion
49.

The compound that will react mostreadilywithgaseous bromine has theformula :

Answer»

`C_(4)H_(10)`
`C_(3) H_(6)`
`C_(2)H_(4)`
`C_(2)H_(2)`

SOLUTION :`underset("butane")(C_(4)H_(10))underset(("gaseous"))overset(Br_(2))to C_(4)H_(9)Br`
`(" free radicalsubstitutionreaction ")]`
Discussion
50.

The compound that will react most readily NaOH to form methanol is

Answer»

`(CH_(3))_(4)N^(+)I^(-)`
`CH_(3)OCH_(3)`
`(CH_(3))_(3)S^(+) I^(-)`
`(CH_(3))_(3)C Cl`.

SOLUTION :`(CH_(3))_(4) OVERSET(+)(N)I^(-)+NaOH rarr NaI+(CH_(3))_(3)N+CH_(3)OH`
Discussion