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.

Identify y in the following reaction, C_(6)H_(5)NH_(2) overset(NaNO_(2)//HCl)rarr(280 K) X overset(CuBr//HBr)to Y

Answer»




SOLUTION :
Discussion
2.

Identify Y in the following reaction : CH_(3) COOH overset(NH_(3)) (to) X overset(Delta) (- H_(2)O) Y

Answer»

`CH_(3) CH_(2) NH_(2)`
`CH_(3) CN`
`CH_(3) CH_(2) NHCH_(3)`
`CH_(3) CONH_(2)`

ANSWER :D
Discussion
3.

Identify (Y)

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NONE of these

Answer :A
Discussion
4.

Identify (X), (Y) andc (Z) in the given reaction : CH_(3)CHO overset(K_(2)Cr_(2)O_(7))underset(H_(2)SO_(4))to(X) overset(PCl_(5))to(Y)overset(C_(6)H_(6))underset(anh.AlCl_(3))to(Z)

Answer»

`(X)=HCOOH, (Y)=COCl_(2),(Y)=COCl_(2), (Z)=C_(6)H_(5)CL`
`(X)=CH_(3)COOH, (Y)=CH_(3)COCl, (Z)=C_(6)H_(5)COCH_(3)`
`(X)=CH_(3)COOH, (Y)=CH_(3)CH_(2)CH_(2)Cl, (Z)=C_(6)H_(5)CH_(2)CH_(2)CH_(3)`
`(X)=CH_(3)COCH_(3), (Y)=CH_(3)CHClCH_(3), (Z)=C_(6)H_(5)COCH_(3)`

Answer :B
Discussion
5.

Identify (X), (Y) and (Z) retgents in the given sequence of reaction. CH-=CH overset(X) to CH_(3)CHO overset(Y) to CH_(3)CH(OH)CH_(3) overset(Z) to CH_(3)COCH_(3)

Answer»

`X=H_(2)SO_(4), Y=H_(2)O//OH^(-), Z=PCl_(5)`, HEAT
`X=HNO_(3), Y=Na_(2)CO_(3),Z=H_(2)SO_(4)`, heat
`X=H_(2)SO_(4)//HG^(2+), Y=PCl_(5)//H_(2)O, Z=K_(2)Cr_(2)O_(7)//OH^(-)`
`X=H_(2)SO_(4)//Hg^(2+),Y=CH_(3)MgBr//H_(2)O, Z=K_(2)CrO_(7)//H^(+)`

ANSWER :D
Discussion
6.

Identify (X), (Y) and (Z) reagents in the given sequence of reaction. CH-=CH overset(X) to CH_(3)CHO overset(Y) to CH_(3)CH(OH)CH_(3) overset(Z) to CH_(3)COCH_(3)

Answer»

`X=H_(2)SO_(4), Y=H_(2)O//OH^(-), Z=PCl_(5)`, HEAT
`X=HNO_(3), Y=Na_(2)CO_(3),Z=H_(2)SO_(4)`, heat
`X=H_(2)SO_(4)//Hg^(2+), Y=PCl_(5)//H_(2)O, Z=K_(2)Cr_(2)O_(7)//OH^(-)`
`X=H_(2)SO_(4)//Hg^(2+),Y=CH_(3)MgBr//H_(2)O, Z=K_(2)CrO_(7)//H^(+)`

Answer :D
Discussion
7.

Identify (X), (Y) and (Z) reagents in the given sequence of reaction. CH-=CH overset(x)rarr CH_(3)CHO overset(Y)rarr CH_(3)CH(OH)CH_(3)overset(Z)rarr CH_(3)COCH_(3)

Answer»

`X = H_(2)SO_(4), Y = H_(2)O // OH^(-), Z = PCl_(5)`, HEAT
`X = HNO_(3), Y = Na_(2)CO_(3), Z = H_(2)SO_(4)`, heat
`X = H_(2)SO_(4)//HG^(2+), Y = PCl_(5)//H_(2)O, Z = K_(2)Cr_(2)O_(7)//OH^(-)`
`X = H_(2)SO_(4)//Hg^(2+), Y = CH_(3)MgBr//H_(2)O, Z = K_(2)Cr_(2)O_(7)//H^(+)`

Answer :D
Discussion
8.

Identify (X), (Y) and (Z) in the given reaction. X+Y overset(Z)rarrunderset("3-Hydroxybutanal")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2))-CHO

Answer»

`X-HCHO, Y - CH_(3)CHO, Z-KOH`
`X-CH_(3)CHO, Y-CH_(3)CHO, Z-NaOH`
`X-CH_(3)CH_(2)OH, Y-HCHO, Z-H_(2)SO_(4)`
`X-CH_(3)CH_(2)CHO, Y-HCHO, Z-"DRY ETHER"`

Answer :B
Discussion
9.

Identify (X), (Y) and (Z) in the given reaction. X +Y overset(Z) to underset("3-Hydroxybutanal")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2))-CHO

Answer»

`{:(X,Y,Z),(HCHO,CH_(3)CHO,KOH):}`
`{:(X,Y,Z),(CH_(3)CHO,CH_(3)CHO,NaOH):}`
`{:(X,Y,Z),(CH_(3)CH_(2)OH,HCHO,H_(2)SO_(4)):}`
`{:(X,Y,Z),(CH_(3)CH_(2)CHO,HCHO,"Dry ether"):}`

ANSWER :B
Discussion
10.

Identify (X), (Y) and (Z) in the given reaction. CH_(3)COCH_(3) overset(I_(2)+NaOH)underset("heat") to X overset(Ag)underset("heat") to Y overset(H_(2)SO_(4)//HgSO_(4))underset("heat") to Z

Answer»

`X=CHI_(3), Y=CH_(3)CHO, Z=HCHO`
`X=CHI_(3), Y=CH_(3)OH, Z=CH_(3)CHO`
`X=CHI_(3), Y=CH-=CH, Z=CH_(3)CHO`
`X=CH_(3)COCI_(3), Y=CH_(2)=CH_(2), Z=CH_(3)CHO`

Solution :`CH_(3)COCH_(3) overset(I_(2)+NaOH)UNDERSET("Heat")tounderset((X))(CHI_(3))overset(Ag)underset("Heat")tounderset((Z))underset(CH_(3)CHO)underset(""darrH_(2)SO_(4)//HgSO_(4))underset((Y))underset("")(CH-=CH)`
Discussion
11.

Identify (X), (Y), and (Z) in the following synthetic scheme and write their structures. Is the compound (Z) optically active? Justify your answer.

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SOLUTION :
Discussion
12.

Identify X in the sequence given below:

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SOLUTION :
Discussion
13.

Identify X in the sequence give below. underset(KOH)overset(CHCl_(3))(to)(Y)underset((300K))overset(HCl)(to)xx + methanoic acid

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ANSWER :A
Discussion
14.

identify (X) in the sequence, C_4H_7OClundersetrarr(NH_3)C_4H_9ONunderset(CH_3CH_2CH_2NH_2)overset(Br_2KOH)rarr.

Answer»



`CH_3-CH_2-CH_2-COCl`
`OHC-CH_2-CH_2-CH_2-Cl`

ANSWER :C
Discussion
15.

identify (X) in the sequence, C_4H_7OCloverset(NH_3)rarrC_4H_9ONoverset(Br_2KOH)rarrCH_3CH_2CH_2NH_2

Answer»



`CH_3-CH_2-CH_2-COCl`
`OHC-CH_2-CH_2-CH_2-Cl`

ANSWER :C
Discussion
16.

Identify X in the sequence,CH_3Br + Mg rarroverset (CO_2)rarroverset(H_2O)rarr(X)

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ANSWER :A
Discussion
17.

Identify (X) in the sequence :

Answer»

`CH_3-CH_2-CH_2OH`
`CH_3-CH(OH)-CH_3`
`CH_3-O-CH_2-CH_3`
`CH_3-CH_2-CHO`

ANSWER :B
Discussion
18.

Identify X in the reaction , HCHO + CH_3MgI overset(dry)underset(ether)rarrIntermediate overset(H^/H_2O)rarr .X.

Answer»

`CH_3OH`
`CH_3CH_2OH`
`CH_3COCH_3`
`CH_3OCH_3`

ANSWER :B
Discussion
19.

Identify X in the following sequence of reactions :CH_(3)-underset(Br)underset("|")CH-underset(Br)underset("|")CH-CH_(2)-CH_(2)-CH_(3) underset(" 2. Na in liquid" NH_(3))overset(1. NaNH_(2))rarrX

Answer»

`CH_(3)-UNDERSET(BR" ")underset("|")(CH)-underset(NH_(2))underset("|")(CH)-CH_(2)CH_(2)CH_(3)`


`CH_(3)-underset(NH_(2))underset("|")(CH)-underset(NH_(2))underset("|")(CH)-CH_(2)CH_(2)CH_(3)`

SOLUTION :
Discussion
20.

Identify X in the following sequence of reactions- CH_3-underset(Br)underset(|)CH-underset(NH_2)underset(|)CH-CH_2CH_2CH_3overset(1.NaNH_2)underset(2.Na//NH_3(l))toX

Answer»

`H_3C-UNDERSET(BR)underset(|)CH-underset(NH_2)underset(|)CH-CH_2CH_2CH_3`


`H_3C-underset(NH_2)underset(|)(CH)-underset(NH_2)underset(|)(CH)-CH_2CH_2CH_3`

SOLUTION :
Discussion
21.

Identify X in the following reaction. C_(2)H_(5)CN overset("Hydrolysis")underset("(NaOH)")rarr C_(2)H_(5)COONa+X.

Answer»

SOLUTION :In the above REACTION X is `NH_(3)`.
Discussion
22.

Identify X and Y in the following sequence C_(2)H_(5)Broverset(X)toproductoverset(Y)toC_(3)H_(7)NH_(2)

Answer»

`X=KCN,Y=LiAlH_(4)`
`X=KCN,Y=H_(3)O^(+)`
`X=CH_(3)Cl,Y=AlCl_(3)HCl`
`X=CH_(3)NH_(2),Y=HNO_(2)`

Solution :`C_(2)H_(5)Br OVERSET(KCN(X))toC_(2)H_(5)CN overset(LiAlH_(4)(Y))toC_(2)H_(5)CH_(2)NH_(2)(C_(3)H_(7)NH_(2))`
X=KCN, Y=`LiAlH_(4)`
Discussion
23.

Identify X in the following sequence of reaction-

Answer»

`H_(3)C-underset(Br)underset(|)(C)H-underset(NH_2)underset(|)(C)H-CH_(2)CH_(2)CH_(3)`


`H_(3)C-underset(NH_2)underset(|)(C)H-underset(NH_2)underset(|)(C)H-CH_(2)CH_(2)CH_(3)`.

SOLUTION :
Discussion
24.

Identify X and Y in the following reactions R - CH = CH -CH_2 OH overset(X) to R - CH = CH - CHO R - CH_2 OH overset (Y) to R - COOH

Answer»

`X: KMnO_4//H^(+) , Y, K_2Cr_2O_7//H^(+)`
`X : PC C, Y : KMnO_4//H^(+)`
`X : CrO_3 , Y : PC C `
`X : PC C, Y : CrO_3`

ANSWER :B
Discussion
25.

Identify (X) and (Y) formed in the given reaction.

Answer»

`CH_3-underset(CH_3)underset(|)C=CH_2 ` in both cases
`CH_3-underset(CH_3)underset(|)overset(CH_3)overset(|)C-OC_2 H_5` in both cases
`CH_3-underset(CH_3)underset(|)C=CH_2 and CH_3-underset(CH_3)underset(|)overset(CH_3)overset(|)C-OC_2 H_5`
`CH_3-underset(CH_3)underset(|)overset(CH_3)overset(|)C-O C_2 H_5` and `CH_3-underset(CH_3)underset(|)C=CH_2`

Solution :(X) is formed by ethanolysis while (Y) is formed by DEHYDROHALOGENATION of TERT. BUTYL BROMIDE.
Discussion
26.

Identify X and Y CH_3COCH_2CH_2COOC_2H_5 overset(CH_3MgBr)(to)X overset(H_3O^(+))(to) Y

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SOLUTION :
Discussion
27.

Identify, with a reason, the stronger oxidising agent in each of the following pairs. Cr^(3+),Fe^(2+) ["Given : "E_((1)/(2)Cl_(2)(g)|Cl^(-))^(@)=+1.36V, E_((1)/(2)Br_(2)(l)|Br^(-))^(@)=+1.07V, E_(Cu^(2+)|Cu)^(@)=+0.34V, E_(Ag^(+)|Ag)^(@)=+0.80V, E_(Pb^(2+)|Pb)^(@)=-0.13V, E_(Fe^(2+)|Fe)^(@)=-0.44V, E_(Fe^(3+)|Fe)^(@)=-0.036V, E_(Cr^(3+)|Cr)^(@)=-0.74V]

Answer»

SOLUTION :`Fe^(3+)` is stronger OXIDANT than `CR^(3+)`
Discussion
28.

Identify X

Answer»

`CuSO_(4)`
`BaSO_(4)`
`BaCI_(2)`
Nal

Solution :i`CuSO_(4) + BaCI_(2) RARR BaSO_(4) DARR + 2HCI`
`ii 2CuSO_(4)+4KI to 2K_(2)SO_(4)+underset("white PPT.")(CuI_(2)+I_(2)darr`
`I_(2)+2Na_(2)S_(2)O_(3)to 2NaI+Na_(2)S_(4)O_(6)`
`(iii) 2Cu^(2+)+K_(4)[Fe(CN)_(6)]to underset("ppt.")underset("(chocolate)")underset("Red-brown")`
Discussion
29.

Identify (X) :

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ANSWER :A
Discussion
30.

Identify which of the structures below are meso structures ?

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1 and 3
1,3 and 5
1,3 and 4
2 and 5

Solution :Meso compounds are those having 2 or more CHIRAL CENTRES along with SYMMETRY.
Discussion
31.

Identify which product give lucas test with HCl+ZnCl_(2)

Answer»


`underset(O)underset(||)overset(O)overset(||)Cunderset(2.H_(3)O^(oplus))overset(1.PhMgBr)rarr`

Solution :`XeF_(4)+O_(2)F_(2)rarrXeF_(6)+O_(2)(g)`

`XeO_(3)+SiF_(4)" "XeO_(6)^(4-)+Xe+O_(2)" "CS^(+)[XeF_(7)]^(-)`
Discussion
32.

Identify which liquid will have a higher vapour pressure at 90^(@)C if the boiling points of two liquids A and B are 140^(@)C and 180^(@)C, respectively.

Answer»

SOLUTION :A, as it has a LOWER BOILING POINT.
Discussion
33.

Identify which of the following compounds would give positive iodoform test.

Answer»

`CH_(3)-CH_(2)-CH_(2)-overset(O)overset(||)(C)-CH_(3)`
`CH_(3)-CH_(2)-overset(O)overset(||)(C)-OCH_(2)-CH_(3)`
`CH_(3)-CH_(2)-overset(O)overset(||)(C)-CH_(2)-CH_(3)`
`C_(6)H_(5)-overset(O)overset(||)(C)-CH_(3)`

Answer :A
Discussion
34.

Identify whether the stereogenic centre is present or not: (a) 2-cyclopentan-1-ol (b) 3-cyclopenten-1-ol (c) 2-bromopentane (d) 3-bromopentane

Answer»

SOLUTION :
Discussion
35.

Identify whether the following compounds · are D or L isomers H-overset(CHO)overset(|)underset(CH_2)Ohoverset(|)C-OH

Answer»


SOLUTION :D ISOMER
Discussion
36.

Identify whether the following compounds · are D or L isomers {:(""CHO),(""|),(HO-C-H),(""|),(" "H-C-OH),(""|),(HO-C-H),(""|),(HO-C-H),(""|),(""CH_2OH):}

Answer»


SOLUTION :L ISOMER
Discussion
37.

Identify true and false statements for fixed amount of gas in following isotherm of real gas. (i) Keeping pressure constant state x can be converted into state y only by decreasing volume. (ii) Keeping volume constant state x can be converted into state z only by decreasing pressure. (iii) State x can never be converted into state z only by increasing pressure at the temperature above C. (iv) Below temperature C state x cann't exist at any pressure. (v) State x,y and z gas, liquid and liquid vapour respectively. (vi) State x canbe converted into state y at temperature d and pressure F.

Answer»


SOLUTION :N//A
Discussion
38.

Identify true and false statements for fixed amount of gas in following isotherm of real gas. (i) From point P to point S volume is constant and temperature is increasing. (ii) From point S to point Q pressure is constant and temperature is decreasing. (iii) Through path P,S,Q we can convert gas into liquid through continuity of state.

Answer»


SOLUTION :N//A
Discussion
39.

Identify the (X), (Y), and (Z) in the following reactions CH_(3)I+PhCOCH_(3)underset("(ii) :"B^(Theta))overset("(i) "Ph_(3)P)rarr(Y)

Answer»

SOLUTION :`(Y)=Ph-C(CH_(3))=CH_(2)`
Discussion
40.

Identify the zeiglar natta catalyst.

Answer»

`TiCl_4 + (C_2H_5)_3 AL `
`(C_2H_5)_4 Pb + TiCl_4`
`AlCl_3+HCL`
`ZnCl_2+`Conc. HCl

Solution :`TiCl_4 + (C_2H_5)_3 Al `
Discussion
41.

Identify the (X) in the following reaction : H_(2)C= underset(CH_(3))underset(|)C- CH_(2)OH overset(X)to H_(2)C= underset(CH_(3))underset(|)C-CHO

Answer»

`CrO_(3)//H_(2)SO_(4)`
`PC C//CH_(2)Cl_(2)`
`Na_(2)Cr_(2)O_(7)//H_(2)SO_(4)`
`KMnO_(4)//H_(2)SO_(4)`

Solution :`PC C//CH_(2)Cl_(2)`
Discussion
42.

Identify the wrong statements in the following:

Answer»

Chlorofluorocarbons are responsible for OZONE LAYER depletion.
Greenhouse effect is responsible for global warming
Ozone layer does not PERMIT INFRARED from the sun to rech the EARTH
Acid rains is mostly because of oxides of nitrogen and sulphur.

Answer :C
Discussion
43.

Identify the wrong statement/s I) All halogens are coloured II) F_(2)andCl_(2) are gases whereas Br_(2)andI_(2)are liquids III) Br_(2)andI_(2) are sparingly soluble in water but are soluble in various organic solvents like C Cl_(4),CS_(2) etc .

Answer»

Only I & III
Only I & II
Only II
Only II & III

Answer :C
Discussion
44.

Identify the wrong statement regarding alizarin

Answer»

Alizarin was EXTRACTED from the roots of the madder PLANT
It's chemical name is 1,2-dihydroxyl anthraquinone
It is fixed to fabrics by USING mordants like aluminium sulphate GIVING fast red colour
It has red crystal SOLUBLE in alkalies and the solution imparts red colour to fabrics

Answer :D
Discussion
45.

identify the wrong statement from the following:

Answer»

Salicylic acid is a monobasic acid
Methyl SALICYLATE is an ester
Salicylic acid gives violte COLOUR with neutral ferric chloride as well as brisk EFFERVESCENCE with sodium bicarbonate
Methyl salicylate does not occur in natural oils.

ANSWER :D
Discussion
46.

Identify the weaksest oxidising agent among the following:

Answer»

`Li^(+)`
`NA^(+)`
`Cd^(2+)`
`I_(2)`

Solution :OXIDISING agent - A substance which has tendencies to gain electrons. `Li to Li^(+) + E^(-)`
Li has the SMALLEST size and high polarisiing power Li acts as a strongest reducing agent hence `Li^(+)` a weakest oxidising agent.
Discussion
47.

Identify the weakest base amongst the following

Answer»

p-methoxyaniline
o-tuluidine
benzene-1,4-diamine
4-aminobenzoic ACID

ANSWER :D
Discussion
48.

Identify the weakest acidic compound amongst the following

Answer»

p-nitrophenol
p-chlorophenol
p-cresol
p-aminophenol

ANSWER :D
Discussion
49.

Identify the weak electrolyte from the following .

Answer»

KCL
NaCl
KBr
`CH_3COOH`

ANSWER :D
Discussion
50.

Identify the vitamin whose deficiency out food decrease reproductive power

Answer»

vit-A
vit-D
vit-E
vit-P

Answer :C
Discussion