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.

Among the following halide ions (X^-) reaction, which is feasible is?

Answer»

`x^-)+CH_3-CH_2-H rarr CH_3-CH_2-X+H^-`
(## AAK_MCP_27_NEET_CHE_E27_044_A002 .png" WIDTH="30%">
`x^-)+CH_3-CH_3 rarr CH_3-X+barCH_3`
`x^-)+CH_3-OH rarr CH_3-X+barOH`

Answer :B
Discussion
2.

Among the following groups of oxides, the group containing oxides that cannot be reduced by carbon to give the respective metals is

Answer»

`Cu_(2)O, SnO_(2)`
`Fe_(2)O_(3),ZNO`
`CaO,K_(2)O`
`PbO,Fe_(3)O_(4)`

Solution :Ca and K are strong reducing agents, hence their oxides cannot be reduced with carbon.
Discussion
3.

Among the following halide ions (X^-) reaction, which is feasible?

Answer»


`(AAK_MCP_35_NEET_CHE_E35_001_A01)`

ANSWER :B
Discussion
4.

Among the following group of oxides, the group containing oxides that cannot be reduced by carbon to give the respective metals , is :

Answer»

`Cu_2O , SnO_2`
`Fe_2O_3 , ZNO `
CAO , `K_2O`
PBO, `Fe_3O_4`

ANSWER :C
Discussion
5.

Among the following group-I carbonate having highest solubility ?

Answer»

`LiCO_(3)`
`Na_(2)CO_(3)`
`K_(2)CO_(3)`
`Rb_(2)CO_(3)`

Answer :D
Discussion
6.

Among the following group of element, the one whose element can have positive as well as negative oxidation states are :

Answer»

H, F, O
Na, Mg, Al
He, LI, Be
H, Cl, Br

Answer :D
Discussion
7.

Among the following graphs showing variation of rate constant with temperature (T) for a reaction, the one that exhibits Arrhenius behavior over the entire temperature range is .........

Answer»




both (B) and (C)

Solution :`k=Ae^(((E_a)/(RT)))`
` LN k = ln A - ((E_a)/R)(1/T)`
this equation is in the form of a straight line with NEGATIVE slope .
Discussion
8.

Amongthe followinggraphsshowingvariationof rateconstantwithtemperature(T) for areactionthe onethatexhibitsArrheniusbehaviorover theenituretemperaturerangeis …..

Answer»




ANSWER :B
Discussion
9.

Among the following given chlorides,covalent in nature is

Answer»

`MgCl_2`
`CaCl_2`
`BeCl_2`
`BaCl_2`

ANSWER :C
Discussion
10.

Among the following four structures I to IV (I) H_(5)C_(2)-overset(CH_(3))overset(|)(C)H-C_(3)H_(7) (II) H_(3)C-overset(O)overset(|)(C)-overset(CH_(3))overset(|)(C)H-CH_(2)H_(5) (III) H-underset(H)underset(|)overset(H)overset(|)(H^(+)) (IV) H_(5)C_(2)-overset(CH_(3))overset(|)(C)H-C_(2)H_(5) In is true that

Answer»

only II and IV are CHIRAL compounds
all FOUR are chiral compounds
only I and II are chiral compounds
only IIII is a chiral compound

Answer :C
Discussion
11.

Amongthe following four structures 1 to 4. {:(1,C_(2)H_(5)-overset(CH_(3)) overset(|)(CH)-C_(3)H_(7),3,CH_(3)- overset(CH_(3)) overset(|)(CH)-COCH_(3)),(2,CH_(3)CO underset(CH_(3)) underset(|)(CH)-C_(2)H_(5),4,C_(2)H_(5)-overset(CH_(3)) overset(|)(CH)-C_(2)H_(5)):}

Answer»


ANSWER :B
Discussion
12.

Among the following four compounds (i) phenol (ii) methylphenol (iii) meta-nitrophenol (iv) para-nitrophenol the acidity order is :

Answer»

`II GT i gt III gt IV`
`iv gt iii gt i gt ii`
`iii gt iv gt i gt ii`
`I gt iv gt iii gt ii`

SOLUTION :
Discussion
13.

among the following four compounds (i) phenol (ii) methylphenol (iii) meta - nitrophenol(iv) para -nitrophenol the acidity order is:

Answer»

`II gtigtiiigtiv`
`ivgtiiigtigtii`
`iiigtivigtigtii`
`igtivgtiiigtii`

SOLUTION :
Discussion
14.

Among the following four compounds (i) phenol (ii) methylphenol (iii) meta-nitrophenol (iv) para-nitrophenol the acidity order is

Answer»

(iv)gt(iii)gt(i)gt(ii)
(iii)gt(iv)gt(i)gt(ii)
(i)gt(iv)gt(iii)gt(ii)
(ii)gt(i)gt(iiii)gt(iv)

Solution :In substituted PHENOLS, presence of ELECTRON withdrawing groups INCREASES the acidity whereas presence of electron releasing groups decreases the acidity as compared to phenol. Further, among the meta and p-nitrophenols, para is more acidic as the presence of `-NO_(2)` group at p-position stabiolizes the phenoxide ion to a greater extent tthan when it is present at the m-position. HENCE, the correct order of acidity is:
p-nitrophenol (iv)gt m-nitrophenol (iii)gtphenol (i) gtmethylphenol (ii) i.e., option (a) is correct.
Discussion
15.

Arrange the following in the increasing acidic strength: Phenol, o-chlorophenol, m-chlorophenol and p-chlorophenol.

Answer»

IV GT III gt I gt II
III gt IV gt I gt II
I lt IV lt III lt II
II gt I gt III gt IV

Answer :A
Discussion
16.

Among the following for spontaneity of chemical reaction there should be

Answer»

DECREASE in entropy and increase in FREE ENERGY
Decrease in entropy and free energy both
Increase in entropy and decrease in free energy
Increase in entropy and free energy both

Answer :C
Discussion
17.

Among the following find the incorrect statement:

Answer»

stability of LYOPHILIC colloids is mainly due to the strong interaction between dispersed particle and DISPERSION medium.
Entropy change for absorption of gases over solid is positive
Gelati has considerably low VALUE of gold NUMBER and is an effective protective colloid.
LYOPHOBIC colloids shows Tyndall effect

Solution :`(DeltaS)_("absorption")=-ve`
Discussion
18.

Among the following ethers which one will produce methyl alcohol on treatment with hot HI?

Answer»

`(H_(3)C)_(3)-C-O-CH_(3)`
`(CH_(3))_(2)-CH-CH_(2)-O-CH_(3)`
`CH_(3)-(CH_(3))_(3)-O-CH_(3)`
`CH_(3)-CH_(3)-UNDERSET(CH_(3))underset(|)C -O-CH_(3)`

Answer :A
Discussion
19.

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentreated HI?

Answer»

`CH_3-UNDERSET(CH_(3))underset(|)CH-CH_2-O-CH_3`
`CH_3-CH_2-CH_2-CH_2-O-CH_3`
`CH_3-CH_2-underset(CH_(3))underset(|)CH-O-CH_3`
`CH_3-underset(CH_3)underset(|)OVERSET(CH_3)overset(|)C-O-CH_3`

SOLUTION :
Discussion
20.

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI ?

Answer»

`CH_(3)-underset(CH_(3))underset(|)CH-CH_(2)-O-CH_(3)`
`CH_(3)-CH_(2)-CH_(2)-CH_(2)-O-CH_(3)`
`CH_(3)-CH_(2)-underset(CH_(3))underset(|)-O-CH_(3)`
`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-O-CH_(3)`

SOLUTION :`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-O-CH_(3)`
Discussion
21.

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI

Answer»

`CH_3 - UNDERSET(CH_3)underset(|)OVERSET(CH_3)overset(|)C-O-CH_3`
`CH_3- underset(CH_3)underset(|)(CH)-CH_2 - O - CH_3`
`CH_3CH_2CH_2CH_2OCH_3`
`CH_3-CH_2 - underset(CH_3) underset(|)CH-O-CH_3`

ANSWER :A
Discussion
22.

Among the following ethers which one will produce methyl alcohol on teatment with hot HI?

Answer»

`(H_3C)_3 -C - O - CH_3`
`(CH_3)_2- CH - CH_2 - O - CH_3`
`CH_3 -(CH_2)_3-O-CH_3`
`CH_3 - CH_2 - underset(CH_3)underset(|)(CH) - O - CH_3`

SOLUTION :
Discussion
23.

Among the following elements which one exhibits both positive and negative oxidation states ?

Answer»

Cs
Ne
I
F

Solution :I SHOWS NEGATIVE O.S. of -1 and POSITIVE O.S. of +1, +3, +5 and +7.
Discussion
24.

Among the following ethers, which one will not be soluble in NaHCO_3?

Answer»

2,4,6 - Trinitrophenol
Benzoic ACID
O - NITROPHENOL
BENZENE sulphonic acid

Answer :C
Discussion
25.

Among the following, dissociation constant is highest for

Answer»

`C_(6)H_(5)OH`
`C_(6)H_(5)CH_(2)OH`
`CH_(3)C-=CH`
`CH_(3)NH_(3)^(+)CL^(-)`

Solution :DUE to the presence of +ve charge on nitrogen, N-H bond is weak and hence it releases a proton instantaneously.
Discussion
26.

Among the following, density is maximum for

Answer»

`CH_3 CL`
`CH_2 Cl_2`
`CHCl_3`
`C Cl_4`

ANSWER :D
Discussion
27.

Among the following, correct statement is:

Answer»

Brownian movement is more pronounced for SMALLER particles than for bigger-particles
Sols of METAL SULPHIDES are lyophitic
Hardy schulzc law states that bigger the size of the ons the greater is its coagulating power
One would expect charcoal to adsorb chlorine more than hydrogen sulphide

Solution :Brownian movement is the random motion of particles suspended in a fluids (a LIQUID or gas ) resultingfrom their collision with the fast moving atom or molecules in the liquid or gases state of the MATTER. That means smaller particles are responsible for the Brownian movement than for bigger particles
Discussion
28.

Among the following compounds, which will react with carbonates and bicarbonates to evolve carbon dioxide gas?

Answer»




ANSWER :C
Discussion
29.

Among the following configurations, the element which has the highest electron affinity is:

Answer»

`[Ne]3s^(1)3p^(2)`
`[Ne]3s^(2)3p^(5)`
`[Ne]3s^(2)3p^(4)`
`[Ne]3s^(2)3p^(6)3d^(5)4s^(1)`

ANSWER :B
Discussion
30.

Among the following correct basic strength order is i) La(OH)_3 , ii) Ce(OH)_3 , iii) Lu(OH)_3

Answer»

`i GT II gt III`
`iii gt ii gt i`
`i gt iii gt ii`
`iii gt i gt ii`

ANSWER :A
Discussion
31.

Among the following compounds, which will react with acetone to give product

Answer»

`C_(6)H_(5)NH_(2)`
`(CH_(3))_(3)N`
`C_(6)H_(5)NHC_(6)H_(5)`
`C_(6)H_(5)NHNH_(2)`

ANSWER :A::D
Discussion
32.

Among the following compounds, which will react with acetone to give a product cotaining gtC = N- ?

Answer»

`C_(6)H_(5)NH_(2)`
`(CH_(3))_(3)N`
`C_(6)H_(5)NHC_(6)H_(5)`
`C_(6)H_(5)NHNH_(2)`.

Solution :Both will react with `(CH_(3))_(2) = O` to form COMPOUNDS with `gtC = N` bond.
Discussion
33.

Among the following compounds which will react with acetone to give a product containing C=N-:

Answer»

`C_6H_5NH_2`
`C_6H_5NHNH_2`
`(CH_3)_3N`
`C_6H_5NHC_6H_5`

ANSWER :B
Discussion
34.

Among the following compounds, which will react with acetone to give a product containing gt C = N- ?

Answer»

`C_(6)H_(5)NH_(2)`
`(CH_(3))_(3)N`
`C_(6)H_(5)NHC_(6)H_(5)`
`C_(6)H_(5)NHNH_(2)`.

Solution :A `C_(6)H_(5)NH_(2) + OC (CH_(3))_(2) overset(H^(+))rarr C_(6)H_(5) - N = C (CH_(3))_(2) + H_(2)O`
D `C_(6)H_(5) NHNH_(2) + OC (CH_(3))_(2) overset(H^(+))rarr C_(6)H_(5)NH - N = C (CH_(3))_(2) + H_(2)O`
Discussion
35.

A compound does not react with 2,4-dinitrophenyl hydrazine, compound is :

Answer»

`CH_(3)CONH_(2)`
`NH_(2)CONH_(2)`
`CH_(3)COOC_(2)H_(5)`
`"CCL"_(3)CH(OH)_(2)`

Answer :D
Discussion
36.

Among the following compounds which one will produce a Schiff base on reaction with cyclopentanone ?

Answer»




SOLUTION :`1^(@)` AMINE
Discussion
37.

Among the following compounds, which one will be dehydrated very easily :

Answer»

`CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)OH`
`CH_(3)CH_(2) UNDERSET(CH_(3))underset(|)(CH)CH_(2)CH_(2)OH`
`CH_(3)CH_(2)underset(OH)underset(|)overset(CH_(3))overset(|)C CH_(2)CH_(3)`
`CH_(3)CH_(2)CH_(2)underset(OH)underset(|)(CH)CH_(3)`

SOLUTION :Ease of dehydration of ALCOHOLS is `3^(@)` alcohol `gt 2^(@)` alcohol `gt 1^(@)` alcohol.
Discussion
38.

Among the following compounds, which one is used as a flavouring agent in ice creams, chocolates and candies?

Answer»

vanillin
valine
salicin
veronal

ANSWER :A
Discussion
39.

Among the following compounds which can be dehydrated very easily is

Answer»

`CH_3-CH_2-undersetunderset(OH)|oversetoverset(CH_3)|C-CH_2-CH_3`
`CH_3-CH_2-CH_2-oversetoverset(OH)|CH-CH_3`
`CH_3-CH_2-CH_2-CH_2-CH_2-OH`
`CH_3-CH_2-underset(CH_3)underset|CH-CH_2-CH_2-OH`

ANSWER :A
Discussion
40.

Among the following compounds which can be dehydrated very easily?

Answer»

` CH_3 CH_2 CH_ 2 CH_2 CH_2 OH `
` CH_3 -CH_2 -OH`
` CH_3 CH_2 -UNDERSET( CH_3) underset(|) OVERSET( OH) overset(|) C- CH_2 CH_3 `
`CH_3 CH_2 overset( OH) overset(|) (CH_2CHCH_3)`

Answer :C
Discussion
41.

Among the following compounds, the strongest acid is "

Answer»

 HC = CH
`C_(2)H_(4)`
`C_(2)H_(6)`
`CH_(3)OH`

Solution :Hydrogen atom ATTACHED with oxygen is MAXIMUM acidic.
Discussion
42.

Among the following compounds, the one(s) that gives (give) effervescence with aqueous NaHCO_(3) solution is (are) underset(I)((CH_(3)CO)_(2)O)""underset(II)(CH_(3)COOH) underset(III)(PhOH)""underset(IV)(CH_(3)COCHO)

Answer»

I and II
I and III
only II
I and IV

Solution :
Discussion
43.

Among the following compounds, the optically active alkane having the lowest molecular mass is:

Answer»

`CH_(3)CH_(2)CH_(2)CH_(3)`
`CH_(3)CH_(2)underset(CH_(3))underset(|)(CHCH_(3))`

`CH_(3)CH_(2)-C-=CH`

Solution :Optically ACTIVE due to the presence of CHIRAL CARBON atom.
Discussion
44.

Among the following compounds, the one(s) that gives (give) effervescence with aqueous NaHCO_(3) solution is (are) I. (CH_(3)CO)_(2)O (II). CH_(3)COOH III. PhOH IV. CH_(3)COCHO

Answer»

I and II
I and III
Only II
I and IV

SOLUTION :`(CH_(3)OH)_(2)O` reacts with `H_(2)O` to PRODUCE acetic acid `(CH_(3)COOH)`. Thus both `(CH_(3)CO)_(2)O` and `CH_(3)COOH` GIVE effervescence with an aqueous solution `NaHCO_(3)`.
Discussion
45.

Among the following compounds, the one that gets hydrolysed to form metallic hydroxide, hydrogen peroxide and oxygen is

Answer»

`Na_(2)O`
`Na_(2)O_(2)`
`Li_(2)O`
`KO_(2)`

Solution :Superoxides `(KO_(2))` react with water to form hydroxides, hydrogen PEROXIDE and oxygen.
`2KO_(2)+2H_(2)Oto2KOH+H_(2)O_(2)+O_(2)`
Discussion
46.

Among the following compounds strongest acid is __________

Answer»

HC`-=`CH
`C_(6)H_(6)`
`C_(2)H_(6)`
`CH_(3)OH`

ANSWER :D
Discussion
47.

Among the following compounds, select the ones which does not undergo aldol condensation.

Answer»




ANSWER :C
Discussion
48.

Among the following compounds NH_(3),CH_(3)NH_(2),C_(6)H_(5)NH_(2) and C_(2)H_(5)NH_(2), the least basic compound is :

Answer»

`NH_(3)`
`CH_(3)NH_(2)`
`C_(2)H_(5)NH_(2)`
`C_(6)H_(5)NH_(2).`

ANSWER :D
Discussion
49.

Among the following compounds how many has a stereoisomer that is a meso compound ? (a ) (i) 2,3-dimethylbutane (ii) 2-bromo-3-methylpentane (iii)1-bromo-2-methylcyclohexane (b) (i) 3,4dimethylhexane (ii) 3,4-diethylhexane (c) (i) 1,3 dimethylcyclohexane (ii) 1,4-dimethylcyclohexane (iii) 1,2-dimethylcyclohexane

Answer»


Answer :`(a ) 0, ( b) 1( c) 2`
Discussion
50.

Among the following compounds (I-III), the correct order of reactivity with an electrophile is underset(I)(C_(6)H_(5)OCH_(3)) "" underset(II)(C_(6)H_(6)) "" underset(III)(C_(6)H_(5)NO_(2)

Answer»

`II GT III gt I`
`III LT I lt II`
`I gt II gt III`
`I= II gt III`

SOLUTION :
Discussion