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 cannot be oxidised by ozone is

Answer»

`KMn O_(4)`
PBS
KI
`SO_(2)`

Answer :A
Discussion
2.

The compound that can work both as an oxidizing and reducing agent is :

Answer»

`KMnO_4`
`H_2O_2`
`Fe_2(SO_4)_3`
`K_2Cr_2O_7`

ANSWER :B
Discussion
3.

The compound that answers iodoform test is _______

Answer»

`CH_(3)CHO`
`CH_(3)COCH_(3)`
`CH_(3)CH_(2)OH`
all of these

Answer :D
Discussion
4.

The compound that acts as a solvent for Grignard reagent is:

Answer»

ETHYL alcohol
DIETHYL ether
Acetone
BENZENE

ANSWER :B
Discussion
5.

The compound soluble in acetic acid is

Answer»

CALCIUM oxide
calcium carbonate
calcium oxalate
calcium hydroxide

Solution :Calcium onalate remains as white PPT and CAO, `CaCO_(3)` and `Ca(OH)_(2)` are SOLUBLE as they react with `CH_(3)COOH`
Discussion
6.

The compound showing maximum covalent character is :

Answer»

`BH_3`
` BCL3`
`BF_3`
`BBr_3`

ANSWER :C
Discussion
7.

The compound (s) the 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
8.

The compound (s) soluble in water ?

Answer»

`CaF_(2)`
`CaCl_(2)`
`CaBr_(2)`
`CaI_(2)`

SOLUTION :`CaF_(2)` is in SOLUBLE in water `CaCl_(2) `, CaBr & `CaI_(2)` soluble in water.
Discussion
9.

The compound [Pt(NH_(3))_(2)Cl_(2)] can exhibit

Answer»

LINKAGE ISOMERISM
optical isomerism
geometrical isomersim
ionisation isomerism

Solution :The COMPLEX can EXHIBIT GEOMETRIC isomerism.
Discussion
10.

The compound possessing most strongly ionic nature is :

Answer»

` Srcl_2 `
` BaCl_2 `
`CaCl_2 `
` CsCl_2 `

ANSWER :D
Discussion
11.

Thecompound on oxidation gives ketone, the original compound is

Answer»

`1^@` alcohol
`2^@` alcohol
`3^@` alcohol
CARBOXYLIC acid

ANSWER :B
Discussion
12.

The compound of Xenon with the lowest bond angle

Answer»

`XeF_2`
`XeO_3`
`XeO_4`
`XeF_4`

ANSWER :D
Discussion
13.

The compound on dehydrogenation gives a ketone . The original compound is

Answer»

TERTIARY ALCOHOL
caboxylic acid
PRIMARY alcohol
secondary alcohol

Solution :A secondary alcohol loses HYDROGEN and forms a KETONE.
Discussion
14.

The compound of Xenon with highest bond angle and zero dipolement

Answer»

`XeF_2`
`XeO_3`
`XeO_4`
`XeF_4`

ANSWER :A
Discussion
15.

The compound of sulphur that can be used as refrigerant is:

Answer»

`S_2Cl_2`
`SO_2`
`SO_3`
`H_2SO_4`

ANSWER :B
Discussion
16.

The compound of sulphur that can be used as refrigerant is

Answer»

`SO_(2)`
`SO_(3)`
`S_(2)Cl_(2)`
`H_(2)SO_(4)`

Solution :Due to large enthalpy of vaporisation `SO_(2)` can be USED as REFRIGERANT.
Discussion
17.

The compound of nitrogen which is supporter ofcombustion and is called laughing gas is.

Answer»

`N_2 O`
`NO_2`
`N_2 O_5`
`N_2 O_4`

ANSWER :A
Discussion
18.

The compound of Solvay process is

Answer»

`Na_2SO_5`
`Na_2S_2 O_8`
`Na_2S_2 O_6`
`Na_2C O_3`

ANSWER :D
Discussion
19.

The compound of molecular formula C_(5)H_(10)O(A) reacts with Tollen's reagent to give silver mirror but does not undergo aldol condensation. The compound (A) is :

Answer»

3-pentanone
2,2-dimethylpropanal
3-hydroxy-2-pentene
3-methylbutanal

ANSWER :B
Discussion
20.

The compound obtained on chlorination of toluene in the presence of sunlight is hydrolysed with an aqueous solution of NaOH to give -

Answer»

<P>BENZYL alcohol
p-cresol
o- and p- cresol
1,3,5-trihydroxy toluene

Answer :C
Discussion
21.

The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits

Answer»

GEOMETRICAL isomerism
OPTICAL isomerism
Neither optical nor geomtrical isomerism
Both optical and geometrical isomerism

Solution :It is an EXAMPLE of ALDOL CONDENSATION.

It has a stereogenic centre, so it will exhibit optical isomerism.
Discussion
22.

The compound obtained when acetaldehyde reacts with dilute aqueous sodium hudroxide exhibits

Answer»

GEOMETRICAL ISOMERISM
optical isomerism
neither optical nor geometrical isomerism
both optical and geometrical isomerism

Solution :If is an example of aldol condensation.

It has a stereogenic CENTRE, so it will EXHIBIT optical isomerism.
Discussion
23.

The compoundobtainedby reactionfollowingcompoundwith 50% H_(2)SO_(4) CH_(3)- CH_(2) - overset(CH_(3))overset(|)(C) = underset(ONa)underset(|)overset(O^(-))overset(|)(C)

Answer»

`CH_(3) - CH_(2) - CO-CH_(2) - CH_(3)`
`CH_(3) - CH_(2) - CH_(2) COOH`
`CH_(3) - CO - CH_(2) - CH_(3)`
`CH_(3) - CH_(2) - CH_(2) - CH_(2) - OH`

Solution :
Discussion
24.

The compound obtained by the reduction of propionaldehyde by Zn/Hgand conc. HCl is

Answer»

Propanol
Propane
Propene
None

Answer :B
Discussion
25.

The compound obtained by reducing CH_3 CN with Na//C_2H_5 OH is

Answer»

METHYL ALCOHOL
ACETIC acid
ETHYLAMINE
methane

SOLUTION :ethylamine
Discussion
26.

The compound obtained by heating salicylic acid with phenol in the presence of phosphorus oxychloride is

Answer»

Salol
Aspirin
Oil of wintergreen
o-chlorobenzoyl choride

Solution :
Discussion
27.

The compound obtained by heating a mixture of a primary amine and chloroform with ethanolic potassium hydroxide is

Answer»

An alkyl isocyanide
An alkyl HALIDE
An AMIDE
An amide and nitro compound

ANSWER :1
Discussion
28.

The compound obtained by heating a mixture of a primary amine and chloroform with ethanolic potassium hydroxide (KOH) is

Answer»

an ALKYL isocyanide
an alkyl halide
an amide
an amide and NITRO COMPOUND.

SOLUTION :an alkyl isocyanide
Discussion
29.

The compound obtainedby catalytichydrogenationof nibrobenationof nitrobenzene is

Answer»

ANILINE
benzaldoxine
benzylnitrite
PHENYL NITRITE

ANSWER :A
Discussion
30.

Thecompound Na_(2)IrCl_(6) reacts with triphenylphosphine in diethyleneglycol in an atmosphere of CO to give [IrCl(CO)(PPh_(3))_(2)]. (Atomic number of Ir=77) Which of the following statements is/are correct ?

Answer»

The IUPAC NAME of the complex is carbonylchloridobis (triphenylphosphine) iridium(I).
The hybridization of the metal ion is `sp^(3)`.
The magnetic MOMENT (spin only) of the complex is zero.
The complex SHOWS geometrical as well as ionization isomerism.

Solution :`"Hyb" to dsp^(2)`, sqr. Planar.
Discussion
31.

The compound Na_(2)[Fe(CN)_(5)NO) is called (A)

Answer»

SODIUM pentacyanonitrosoniumferrate (II)
sodium nitroprusside
sodium pentacyanonitrosylferrate (III)
sodium nitrosoferrocyanide

Answer :A::B
Discussion
32.

The compound Na_(2)[Fe(CN_(5)NO] is called

Answer»

SODIUM nitroprusside
sodium pentacyanonitrosonium FERRATE (II)
sodium pentacyanonitrosylferrate (III)
sodium nitrosoferrocyanide

ANSWER :A::B
Discussion
33.

The compound most reactive towards S_N1 reaction is

Answer»

`MeCOCH_2Cl`
`MeOCH_2Cl`
`C_6H_5CH_2CH_2Cl`

SOLUTION :
Though (ii) contains +ve charge on OXYGEN. SINCE octet around each atom is complete the STRUCTURE II is more STABLE than I .
Discussion
34.

The compound most likely to decolourize a solution of potassium permanganate is

Answer»

`CH_3CH_3`

`CH_3CH=CHCH_2CH_3`
`CH_3-undersetunderset(CH_3)|oversetoverset(CH_3)|C-CH_3`

SOLUTION :`CH_3-CH=CH-CH_2-CH_3` , it DECOLOURIZES `KMnO_4` solution because DOUBLE BOND is PRESENT
Discussion
35.

The compound K_(3)[Co(ONO)_(6)] is called

Answer»

potassium cobaltinitrite
FISCHER's salt
potassium hexanitritocobaltate (III)
potassium cobalt NITRATE

ANSWER :A::B::C
Discussion
36.

The compound K_(4)[Fe(CN)_(6)] is called

Answer»

 POTASSIUM ferrocyanide
potassium ferricyanide
potassium HEXACYANOFERRATE (LLL)
potassium hexacyanoferrate (II)

ANSWER :A::D
Discussion
37.

The compound K_(3)[Co(NO_(2))_(6)] is called

Answer»

FISCHER's SALT
POTASSIUM cobaltinitrite
potassium hexanitrocobaltate (III)
potassium COBALT nitrite

Answer :A::B::C
Discussion
38.

The compound isomeric with acetone is:

Answer»

Propanal
Propionic ACID
ETHOXY ethane
None of the above

Answer :A
Discussion
39.

The compound is not isomeric with diethyl ether

Answer»

butan-1-ol
propan-2-ol
2-methyl -2-propanol
butan-2-ol

Answer :B
Discussion
40.

The compound is used as

Answer»

antiseptic
antibiotic
ANALGESIC
pesticide.

Solution :The given COMPOUND is ASPIRIN which is USED as analgesic.
Discussion
41.

The compound is used as

Answer»

ANTISEPTIC
ANTIBIOTIC
ANALGESIC
pesticide

Solution :analgesic
Discussion
42.

The compound insoluble in water is:

Answer»

`CaF_2`
`CaCl_2`
`CaBr_2`
`CaI_2`

ANSWER :A
Discussion
43.

The compound insoluble in acetic aid is

Answer»

calcium oxide
CALCIUMCARBONATE
calcium oxalate
calciumhydroxide

Solution :Accetic ACID, being an acidreacts with calium oxide, hydroxideand calcium carbonate ,NO REACTION with CALCUIM oxalate.
Discussion
44.

The compound insoluble in acetic acid is:

Answer»

CALCIUM oxide
Calcium carbonate
Calcium hydroxide
Calcium oxalate

Answer :D
Discussion
45.

The compound insoluble in acetic acid is

Answer»

Calcium oxide
Calcium CARBONATE
Calcium oxalate
Calcium HYDROXIDE

Solution :DUE to COMMON ION effect.
Discussion
46.

The compound insoluble in acetic acid

Answer»

Calcium oxide
Calcium carbonate
Calcium oxalate
Calcium hydroxide

Solution :`CA^(2+)` is precipitated as calcium oxalate which is INSOLUBLE in water as well as in acetic acid.
`CAO, CaCO_(3) and Ca(OH)_(2)` are soluble in acetic acid.
Discussion
47.

The compound insolubel in acetic acid is

Answer»

CALCIUM OXIDE
Calcium carbonate
Calcium oxalate
Calcium hydroxide

Solution :`CaO,CaCO_(3)and Ca(OH)_(2)"DISSOLVE in"CH_(3)COOH "to from" (CH_(3)COO)_(2)Ca. But CaC_(2)O_(4)` does not dissolve as `CH_(3)COO^(-)` is a stronger conjugate base than `C_(2)O_(4)^(2-).`
Discussion
48.

The compound in which there is no lone pair on xenon atom is

Answer»

`XeF_6`
`XeF_2`
`XeO_4`
`XeF_4`

ANSWER :C
Discussion
49.

The compound in which the number of d pi - p pi bonds are equal to those present in ClO_(4)^(-)

Answer»

`XeF_(4)`
`XeO_(3)`
`XeO_(4)`
`XeF_(6)`

ANSWER :B
Discussion
50.

The compound in which the number of dit - px bonds are equal to those present in CIO_(4)^(-), is

Answer»

`XeF_4`
`XeO_3`
`XeO_4`
`XeF_2`

ANSWER :B
Discussion