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 that will not give idoform on treatment with alkali and iodine is :

Answer»

NACL
`Socl_2`
`Cl_2`
KCl

Answer :C
Discussion
2.

The compound that will not form iodoform on treatment with alkali and iodine is

Answer»

acetone
ethanol
diethylketone
isopropyl ALCOHOL

Solution :Diethyl ketone `(CH_(3)-CH_(2)-CO-CH_(2)-CH_(3))` does not cantain `CH_(3)CO` group linked to carbon and hence does not give IODOFORM TEST.
Hence, ( C ) is the correct answer.
Discussion
3.

The compound that will not be stable to exhibit stereoisomerism is :1

Answer»

1,2-Dibromocyclopropane
LACTIC acid
1-Bromopropene
1-Methylcyclopropane.

ANSWER :D
Discussion
4.

The compound that will have a permanent dipole moment among the following is

Answer»

I
II
III
IV

Solution :PERMANENT dipole moment means a fixed value of dipole moment (this should have been MENTIONED clearly)
Discussion
5.

The compound that will have a permanent dipole moment among the following is-

Answer»




Solution :The structures of the given compouds of the give compounds along with the DIRECTION of bond moments are given below:

`C Cl_(4) and C_(2)Br_(2)` are symmetrical MOLECULES. HENCE in `C Cl_(4)`, the resultant of two C-Cl bond moments CANCEL the resultant of other two C-Cl bond MOMENT. Again, in `C_(2)Br_(2)`, two C-Br bond moments cancel out each other.
In case of trans-dichloroethane, two C-Cl bond moments are cancelled by each other. Again, two C-H bond moments are cancelled by each other.
In `CH_(2)Cl`, the resultant of two CCl bond moments is reinforced by resultant of two C-H bond moments. Therefore `CH_(2)Cl_(2)` (dipole moment = 1.62D) has permanent dipole moment.
Discussion
6.

The compound that will have a permanent dipole moment among the following

Answer»

I
II
III
IV

Solution :
All other COMPOUND have `mu=0`
Discussion
7.

The compound that undergoes decarboxylation most readily under mild conditions is

Answer»




Solution :`BETA`-KETOACIDS on HEATING readily UNDERGO DECARBOXYLATION.
Discussion
8.

The compound that undergoes dehydration very easily is

Answer»

2-methylpropan-2-ol
Ethyl alcohol
3-methyl-2-butanol
Propyl alcohol

Solution :Tertiary alcohols UNDERGO DEHYDRATION more EASILY than primary and SECONDARY alcohols.
Discussion
9.

The compound that undergoes decaboxylation most readily under mild condition is :

Answer»




ANSWER :B
Discussion
10.

the compound that readily undergoes decarboxylation is

Answer»

`HOOC-(CH_(2))_(4)-COOH`
`C_(6)H_(5)-COOH`
`HOOC-CH_(2)-COOH`
`CH_(3)CH_2CH_(2)COOH`

Answer :C
Discussion
11.

The compound that reacts with CH_(3)MgBr to yield methane as one of the products is

Answer»

`CH_(3)CHO`
`CH_(3)COCH_(3)`
`CH_(3)COOCH_(3)`
`CH_(3)CH_(2)OH`

Answer :D
Discussion
12.

The compound that neither forms semicarbazone nor oxime is

Answer»

HCHO
`CH_3COCH_2Cl`
`CH_3CHO`
`CH_3CONHCH_3`

ANSWER :D
Discussion
13.

The compound that is used in nuclear reactors as protective shields and controls rods is ……………

Answer»

MEAL borides
metal oxides
Metal carbonates
metal carbide

Answer :A
Discussion
14.

The compound that reacts the fastest with sodium methoxide is

Answer»




SOLUTION :The REACTIVITY of aryl HALIDES towards nucleophili substitution reactions is increased by electron withdrawing GROUPS.
Discussion
15.

The compound that is used in nuclear reactors as protective shields and control rods is

Answer»

METAL borides
Metaloxides
Metalcarbonates
Metalcarbide

Solution :Metal borides
Discussion
16.

The compound that is not a Lewis acid is

Answer»

`BF_(3)`
`AlCl_(3)`
`BeCl_(2)`
`SnCl_(4)`

SOLUTION :SN in `SnCl_(4)` has its octet completed while the centralatoms in other molecules have incomplete octet.
Discussion
17.

The compound that is not a lewis acid is:

Answer»

`BF_3`
`AlCl_3`
`BeCl_2`
`SnCl_4`

ANSWER :C
Discussion
18.

The compound that is most reactive towards electrophilic nitration is

Answer»

toluene
benzene
benzoic acid
nitrobenzene

Answer :A
Discussion
19.

The compoundthat ismost reactivetowardselectrophilic nitration is

Answer»

TOLUENE
benzene
benzoic
nitrobenzene

Solution :Intoluenetherein an electrondoN/Atingmethylgroupsoitreactsfastest. In otheroptionswe FINDTHAT theyhaveeitherand electronwithdrawinggroup (e.g - COOH `- NO_(2)` ETC)or nosubstitution.
Discussion
20.

The compound that is most reactive towards electrophilic nitration is :

Answer»

TOLUENE
Benzene
Benzoic acid
Nitrobenzene

Answer :A
Discussion
21.

The compound that is most difficult to protonate is

Answer»




Solution :DUE to the presence of benzene ring in PhOH, the LONE pair of electrons will be delocalised on the benzen ring resulting partial positive charge on O. Hence , incoming PROTON will not attack EASILY.
Discussion
22.

The compound that is most difficult to protonate is …..

Answer»




ANSWER :D
Discussion
23.

The compound that is explosive in dry state

Answer»

`XeO_3`
`XeF_6`
`XeOF_2`
`XeF_2`

ANSWER :A
Discussion
24.

The compound that has the highest dipole moment is

Answer»

cis-1, 2-dichloroethene
trans-1, 2-dichloroethene
cis-1-bromo-2-chloroethene
trans-1-bromo-2-chloroethene

Answer :A
Discussion
25.

The compound that is chiral

Answer»

3-Methyl-3-hexane
1-Chloro-4-methylcyclohexane
2-Phenylpentane
1,3-Diisopropylbenzene

Answer :C
Discussion
26.

The compound that has the higest ionic character associated with the X-Cl bond is :

Answer»

`PCl_(5)`
`BCl_(3)`
`C Cl_(4)`
`SiCl_(4)`

Solution :In `SiCl_(4)` difference between ELECTRONEGATIVITY of Si (1.8) and chlorine (3.0) is higher than in other given compounds.
Discussion
27.

The compound that gives a lactone on heating is

Answer»

pentanedioic ACID
4-hydroxypentanoic acid
4-aminopentanoic acid
2-hydroxypentanoic acid

ANSWER :B
Discussion
28.

The compound that gives chlorine like smell is:

Answer»

`CHCl_3`
`CaOCl_2`
Chloretone
None

Answer :B
Discussion
29.

The compound that exhibits geometricalisomerism is

Answer»

`C_2H_5Br`
`(CH)_2(COOH)_2`
`CH_3CHO`
`(CH_2)_2(COOH)_2`

ANSWER :B
Discussion
30.

The compound that exhibit geometrical isomerism is

Answer»

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

Solution :`[M(A A)_(2)b_(2)]^(NPM),[Ma_(2)b_(2)]^(npm)` will exhibit geometric isomerism.
Discussion
31.

The compound that does not undergo Cannizaro reaction is:

Answer»

Formaldehyde
Acetaldehyde
BENZALDEHYDE
TRIMETHYL acetaldehyde

ANSWER :B
Discussion
32.

The compound that does not show tautomerism is…………

Answer»

nitrobenzene
nitro methane
nitro ethane
2-nitro propane

Answer :A
Discussion
33.

The compound that does not respond to haloform reaction is

Answer»

`C_5H_11 CHOHCH_3`
` CH_3 CH_2 CHOHC_2H_5`
` CH_3CHOHCH_3`
` CH_3 CH_2 OH`

ANSWER :B
Discussion
34.

The compound that does not produce nitrogen gas upon thermal decomposition is :

Answer»

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

Solution :Except for `(NH_(4))_(2)SO_(4)` which evolves `NH_(3)` upon strong heating, all other compounds decompose the PRODUCE `N_(2)` gas
`(NH_(4))_(2)SO_(4) overset("heat")to 2NH_(3)+H_(2)SO_(4)`
`(NH_(4))_(2)Cr_(2)O_(7) overset("heat") to N_(2)+4H_(2)O + Cr_(2)O_(3)`
`(NH_(4))_(2)NO_(2) overset("heat")to N_(2)+2H_(2)O`
`Ba(N_(3))_(2) overset("heat") to Ba+3N_(2)`
Discussion
35.

The compound that does not react with sodium is

Answer»

`CH_3OCH_3`
`CH_3COOH`
`CH_3CHOHCH_3`
`C_2H_5OH`

ANSWER :A
Discussion
36.

The compound that does NOT liberate CO_(2), on treatment with aqueous sodium bicarbonate solution, is

Answer»

Benzoic ACID
Benzensulphonic acid
Salicylic acid
Carbolic acid (Phenol)

Solution :Phenol is less ACIDIC than `H_(2)CO_(3)` and does not liberate `CO_(2)`.
Discussion
37.

The compuond that does no liberate CO_(2) on treatment with aqueous sodium bicarbonate solution is :

Answer»

BENZOIC acid
Benzensulphonic acid
SALICYLIC acid
CARBONIC acid (Phenol)

Answer :D
Discussion
38.

The compound that does not gives a blue colour in Lassaigne's test N is :

Answer»

`C_(6)H_(5)-NH_(2)`
`CH_(3)CONH_(2)`
`NH_(2)-NH_(2)`
`C_(6)H_(5)-NO_(2)`

Solution :N//A
Discussion
39.

The compound that does not liberate CO_(2) gas on treatment with aqueous NaHCO_(3) solution is:-

Answer»

Binzoic acid
Picric acid
Salicylic acid
Carbolic acid

Answer :D
Discussion
40.

The compound that does not give a blue colour in Lassaigne's test is

Answer»

`C_(6)H_(5)-NH_(2)`
`CH_(3)CONH_(2)`
`NH_(2)-NH_(2)`
`C_(6)H_(5)-NO_(2)`

Solution :N//A
Discussion
41.

The compound that does not act as lewis acid :

Answer»

`AlCl_3`
`BF_3`
`NH_3`
`Fecl_2`

ANSWER :C
Discussion
42.

The compound that des not undergo Cannizzaro reaction is

Answer»

formaldehyde
acetaldehyde
benzaldehyde
trimethylacetaldehyde

Solution :Acetalehyde contains `ALPHA`-hydrogens and hence does not undergo CANNIZZARO REACTION.
Discussion
43.

The compound that decolourises alk. KMnO_(4) is

Answer»

`C_(3)H_(8)`
`CH_(4)`
`C_(2)H_(4)`
`C CI_(4)`

Answer :C
Discussion
44.

The compound that causes general antirepressant action on the central nervous system belong to the class of "………"

Answer»

analgesics
tranquiiizers
narcotic analgesics
antihistamines

Solution :Analgesics reduces or abolish PAIN without causing impairment of consciousness, mental confusion, incordination or paralysis or some other disturbanes of nervous administeredin small doses relieve pain and produce sleep.
Tranquilisers are a class of chemical compounds USED for the treatment of STRESS, and mild or evenseverse mentaldiseases.
Hisamine is a substance which on release produce hypersensitivity to DUST, some drugs etc (i.e., allergy). Antihistamines arethe drugs which interfere with the natural actionof histamine by competing with histamine for binding sites of receptor where histamine exerts its effect. They are anti-allergy drugs.
Discussion
45.

The compound that causes general antidepresseant action on the central nervous system belongs to the class of

Answer»

analgesics
tranquillizers
narcotic analgesics
antihistamines

Solution :Tranquillizers CAUSE general antidepressant ACTION on the CENTRAL nervous system.
Discussion
46.

The compound that causes general antidepressant action on the central nervous system belongs to the class of

Answer»

analgesics
tranquilizers
NARCOTIC analgesics
antihistamines.

Answer :B
Discussion
47.

The compound that causes general antidepressant action on the central nervous system belongs to the class of ........

Answer»

ANALGESICS
TRANQUILIZERS
narcotic analgesics 
ANTIHISTAMINES 

SOLUTION :tranquilizers
Discussion
48.

The compound that causes general antidepressantaction on the central nervous system belongs to the class of

Answer»

ANALGESICS
tranquilizers
narcoticanalgesics
ANTIHISTAMINES.

ANSWER :B
Discussion
49.

The compound that causes general antidepressant action on the central nervous system belongs to the class of ________

Answer»

ANALGESICS
TRANQUILIZERS
NARCOTIC analgesics
antihistamines

Answer :B
Discussion
50.

The compound that causes general anti depressant action on the central nervous system belongs to the class of...

Answer»

analgesics
tranquillizers
narcotic analgesics
antihistamines

Answer :B
Discussion