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.

CH_3COOH is titrated in the NaOH solution which of the following statements is correct for such titration?

Answer»

Conductance increases upto equivalence POINT, then it decreases.
Conductance decreases upto equivalence point, then it increases.
First conductance increases SLOWLY upto equivalence point and then increases rapidly.
Before the equivalent point, there exists buffer solution.

Solution :`CH_3COOH " VS " NaOH`
`CH_3COOH ` weak acid ( dissociated less extent )
NaOH is strong Base ( dissociate large extent )
`CH_3COOH + NaOH to Ch_3COONa + H_2O`
`CH_3COOH + CH_3COONa` ACIDIC buffer
`:.` E.M.F conductance increases slowly upto equivalence point and then increases rapidly . Therefore equivalence pointthere exist is acidic buffer
Discussion
2.

CH_(3)COOH is titrated with NaOH solution. Which of the following statements is true ?

Answer»

CONDUCTANCE decreases UPTO EQUIVALENCE point, after which it increases.
Conductance increases upto equivalence point,after which it decreases.
Conductance first decreases `(` but not RAPIDLY`)` and then increases upto equibalence point and then increases rapidley after equivalence point.
None of these

Solution :Refer SECTION.
Discussion
3.

CH_3COOH is reduced with LiAlH_4 to give :

Answer»

`C_2H_6`
`CH_3CH_2OH`
`CH_3CH_2CH_3`
`CH_3CHO`

ANSWER :B
Discussion
4.

CH_(3)COOH is reacted with CH-=CH in presence of Hg^(++) the product is

Answer»

`{:(,CH_(3)(OOC CH_(3))),(,"|"),(,CH_(2)(OOCH_(3))):}`
`{:(,CH_(3)),(,"|"),(,CH_(2)-(OOC-CH_(3))):}`
`{:(,CH_(3)),(,"|"),(,CH(OOC-CH_(3))_(2)):}`
None of these

Solution :`CH-=CH+CH_(2)COOH OVERSET([HG^(2+)])to underset("Vinyl aetate")(H_(2)C=CH-OCOCH_(3)) overset(CH_(3)COOH)tounderset("Ethylidene acetate")(CH_(3)-CH(O-COCH_(3))_(2))`.
Discussion
5.

CH_(3)COOH has the dissociation constant 1 xx10^(-5) . It forms a salt CH_(3)COONa on reaction with NaOH. The percentage degree of hydrolysis of 0.1 M solution of CH_(3)COONa is:

Answer»

`0.0001%`
`0.01%`
`0.1%`
NONE of these

Answer :B
Discussion
6.

CH_(3)COOH + C_(2)H_(5)OH underset("heat")overset("conc." H_(2)SO_(4))to CH_(3)COOC_(2)H_(5) +H_(2)O The above reaction is known as

Answer»

Hydrolysis
Esterification
Saponification
Dehydration

Answer :B
Discussion
7.

CH_3COOH and C_6H_5COOH can be distinguished by :

Answer»

FLAME test
Solubility in WATER
Physical STATE
All

Answer :D
Discussion
8.

CH_(3)COOH( 50 ml , 0.1M) is titratedagainst0.1M NaOHsolution .Calulate the pH after the addition of 0 ml ,10 ml, 20 ml, 25 ml40 ml, 50mland 60 mlof NaOHK_(a) of CH_(3) COOHis2 xx 10^(-5)

Answer»

Solution :(a) `2.85`
(B) ` 4.0969`
(C ) `4.5229`
(d) `4.699`
(E ) `5.3011`
(f) ` 8.699`
(g)`11.9586 `
Discussion
9.

CH_3COOH (50 ml, 0.1 M) is titrated against 0.1 M NaOH solution. Calculate the pH at the addition of 0 ml, 10 ml, 20 ml, 25 ml, 40 ml, 50 ml of NaOH. Ka of CH_3COOH" is "2 xx 10^(-5).

Answer»


ANSWER :i. 2.85 II. 4.0969 iii. 4.5229 IV 4.699 V. 5.301 vi 8.699
Discussion
10.

CH_(3)COOCH_(3)+H_(2)O overset(H^(+))rarr CH_(3)COOH+CH_(3)OH is an exampleof ________ order reaction.

Answer»

FIRST
ZERO
THIRD
PSEUDO

ANSWER :D
Discussion
11.

CH_(3)COOC_(2)H_(5)overset(CH_(3)MgBr)underset("excess")toP. The product P will be

Answer»




ANSWER :A
Discussion
12.

CH_(3)COOCH_(2)CH_(3)underset((ii) H_(2)O)overset(LiAIH_(4))to X, identify X.

Answer»

`CH_(3)CH_(2)CH_(2)OH`
`2CH_(3)CH_(2)OH`
`CH_(3)-CHO`
`CH_(3)-CH(OH)CH_(3)`

Solution :`UNDERSET("ETHYL ethanoate")(CH_(3)COOH_(2)CH_(3)) underset((ii) H_(2)O)overset(LiAIH_(4))to underset("ethanol")(2CH_(3)CH_(2)OH)`
Discussion
13.

The reaction CH_(3)COOC_(2)H_(5)+H_(2)Ooverset(H^(+))(to) products is a/an______process a. Instantantaneous B. Spontaneous C. Moderately slow Then correct statement(s) is/are

Answer»

A & C
B & C
A only
C only

Answer :B
Discussion
14.

CH_3COOAg + C_2H_5Cl to(org.) Wrong statement about 'A' is

Answer»

A is an ESTER
IUPAC NAME of 'A' is ethylethanoate
Functional isomers of 'A' is butyric acid
All carbons in 'A' are `sp^2`hybridised

Answer :D
Discussion
15.

CH_3CONH_2overset(P_2 O_5)rarr…….. Is an example of:

Answer»

DEHYDRATION
DEAMINATION
Dehydrogenation
None of the above STATEMENT is correct

Answer :A
Discussion
16.

CH_(3)CONH_(2)toCH_(3)CN , In this conversion, the charge in hybridisation state of the carbon atom of the functional group is-

Answer»

`SP^(3) - sp`
`sp^(2) - sp`
`sp - sp^(3)`
`sp^(2) - sp^(3)`

ANSWER :B
Discussion
17.

CH_(3)CONH_(2)overset(NaNO_(2)//HCl)toX

Answer»

`CH_(3)COOH`
`CH_(3)CH overset(+)(N)H_(3)Cl^(-)`
`CH_(3)NH_(2)`
`CH_(3)CHO`

Solution :Amide, on treating with `HNO_(2)`, give acids.
`CH_(3)CONH_(2) underset((HNO_(2)))overset(NaNO_(2)//HCL)tounderset("Acetic acid")(CH_(3)COOH)+N_(2)+H_(2)O`
Discussion
18.

CH_3CONH_2 on reaction with NaOH and Br_2 in alcoholic medium gives

Answer»

`CH_3CH_2NH_2`
`CH_3CH_2Br`
`CH_3NH_2`
`CH_3COONa`

SOLUTION :`CH_3NH_2`
Discussion
19.

CH_3CONH_2 overset(Br_2"/"KOH)(to) CH_3Nh_2+CO_2 This is…………….reaction.

Answer»

HOFFMAN bromamide
HVZ
Gabriel reaction
Gomberg Bachmann

Answer :A
Discussion
20.

CH_(3)CONH_(2) is subjected to Hoffmann bromamide degradation. Name the main nitrogen containing compound obtained.

Answer»


ANSWER :METHYL AMINE
Discussion
21.

CH_3CONH_2 IS dehydrated by P_2O_5 to give :

Answer»

`CH_3NH_2`
`CH_3CN`
`CH _3CHO`
`CH_3 -CH_3 + CO + NH_3`

ANSWER :B
Discussion
22.

CH_(3)CONH_(2) is a we4aker base than CH_(3)CH_(2)NH_(2).

Answer»

Solution :Due to resonance, the lone pair of ELECTRONS on the nitrogen atom in `CH_(3)CONH_(2)` is delocalized over the carbonyl GROUP, C=O.

As a RESULT, electron density on the N-atom I acetamide decreases. In contrast, in ethylamine, due to +I-effect of the ethyl group, electron density on the N-atom increases. Consequently, `CH_(3)CONH_(2)` is a weaker BASE than `CH_(3)CH_(2)NH_(2)`.
Discussion
23.

CH_(3)COH underset((ii) H_(2)O)overset(LiAIH_(4))to X What is X?

Answer»

`CH_(3)CH_(2)OH`
`CH_(3)UNDERSET(OH)underset(|)CH-CH_(3)`
`CH_(3)CHO`
`CH_(3)-underset(O)underset(||)C- CH_(3)`

SOLUTION :`underset("acetic acid")(CH_(3)COOH) underset((ii) H_(2)O)overset(LiAIH_(4))to underset("ethanol")(CH_(3)CH_(2)OH)`
Discussion
24.

CH_3COCloverset(Pd (H_2))underset(BaSO_4)rarr X : Here X is :

Answer»

Acetaldehyde
Propionaldehyde
Paraformaldehyde
Acetic anhydride

Answer :A
Discussion
25.

CH_3COCl reacts with:

Answer»

`C_6H_5OH`
`C_6H_5NH_2`
SALICYLIC ACID
All

Answer :D
Discussion
26.

CH_(3)COCl+H_(2)overset(Pd//BaSO_(4))underset("quinoline")rarrCH_(3)CHO. Here quinoline acts as

Answer»

Catalyst
Catalyst poison
Promoter
Medium

Answer :B
Discussion
27.

CH_(3)COCl +H_(2) underset(BaSO_(4))overset(Pd)to CH_(3)CHO+HCl is:

Answer»

CROSS ALDOL condensation
Aldol condensation
Cannizzaro reaction
Rosenmund's reaction

Answer :D
Discussion
28.

CH_3COCl+C_2H_5OH rarr______+_______.

Answer»

SOLUTION :`CH_3COOC_2H_5 +HCL`
Discussion
29.

CH_(3)COCI+H_(2)overset(Pd)(rarr)CH_(3)CH_(2)OH overset(Pd//BaSO_(4))underset("quinoline ")(rarr)CH_(3)CHOhere quinoline acts as

Answer»

`+` ve catalyst
Catalyst poison
Promoter
MEDIUM

ANSWER :B
Discussion
30.

CH_3COCH_3overset(CH_3C=overset(Theta)Coverset(o+)Na)toXoverset(H_2O)toYoverset(H_2, Pd+CaCO_3)toZoverset(Al_2O_3)W,W:

Answer»

`CH_2=CH-CH=CH_2`
`CH_3-CH=CH-CH=CH_2`
`undersetunderset(CH_3)(|)CH=CH-oversetoverset(CH_3)(|)C=CH_2`
`CH_3-CH=CH-CH=CH-CH_3`

SOLUTION :
Discussion
31.

CH_(3)COCH_(2)Cl overset(OH^(-),Cl_(2))rarr " Product P " is

Answer»

`ClCH_(2)COCH_(2)CL`
`CH_(3)COCHCl_(2)`
both a and b
`ClCH_(2)COOH+CH_(3)Cl`

Solution :The reaction is a part of haloform reaction.
`CH_(3)-overset(O)overset(||)C-CH_(2)Cl overset(OH^(-))rarr underset("I")(CH_(3)-overset(O)overset(||)C-CHCl)`
or `underset("II")(overset(-)CH_(2)-overset(O)overset(||)C-CH_(2)Cl)`
However, `-I` effect of `-Cl` makes the H. of `CH_(2)Cl` more acidic, HENCE I is more likely to be formed.

`overset(OH^(-))rarr H_(3)C-overset(O)overset(||)C-overset(-)CH-Cl overset(Cl_(2))rarr H_(2)C-overset(O)overset(||)C-CHCl_(2)`
Discussion
32.

Strutures of products , Starting materials or reagents CH_3COCH_(2)COOC_(2)H_5underset((ii) H^(+))overset((i) NaBH_4)rarr

Answer»

Solution :`UNDERSET("Ethyl-3-hydroxy-butanoate")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2)-overset(O)overset(||)(C)-O-C_(2)H_(5))`
Discussion
33.

CH_(3)Cnoverset(Na+C_(2)H_(2)OH)rarrX The compound X is

Answer»

`CH_(3)CONH_(2)`
`CH_(3)CH_(2)NH_(2)`
`C_(2)H_(6)`
`CH_(3)NHCH_(3)`

Solution :`CH_(3)C=N+4[H]underset("Reduction")overset(Na+C_(2)H_(5)OH)rarrCH_(3)CH_(2)NH_(2)`
Discussion
34.

CH_(3)CO CH_(3) can be converted into CH_(3) COOH by

Answer»

REDUCTION
hydrolysis
decarboxylation
OXIDATION

ANSWER :D
Discussion
35.

CH_(3)CNandCH_(3)NC are,

Answer»

POSITION isomers
chain isomers
functional isomers
metamers

Answer :C
Discussion
36.

CH_(3)CN is known as acetonitrile because

Answer»

It CONTAINS an ACETO group
On hydrolysis it gives ACETIC ACID
Both a and b
NONE of these

Answer :B
Discussion
37.

CH_2ClCOOH is a stronger acid than CH_3COOH. Why?

Answer»


ANSWER :DUE to the -I effect (electron WITHDRAWING of chlorine atom, the stability of chloroacetate ion is more than that of acetaete ion. Thus `CH_2ClCOOH` is a stronger acid that `CH_3COOH`.
Discussion
38.

CH_(3)Cl + NaI overset("Dry acetone")rarr CH_(3)I + NaCl. Name the above reaction.

Answer»

SOLUTION :Finkel stein.s REACTION
Discussion
39.

CH_3CIoverset(Mg)underset(["Ether"])toXoverset(CH_3COCI)underset(["Hydrolysis"])to.....Y In the sequence given above, Y is

Answer»

ACETONE
ACETALDEHYDE
Tertiary BUTYL alcohol
Isopropyl alcohol

Solution :`CH_3CIoverset("MG")underset("ETHER")toCH_3MgCI`,
`CH_3COCI+2CH_3MgCIto(CH_3)_3COH+MgCI_2+Mg(OH)CI`
Discussion
40.

CH_(3)CHOO_((1))+C_(2)H_(5)OH_((1))hArrCH_(3)COOC_(2)H_(5(1))+H_(2)O_((1)) In the above reaction, one mole of each of acetic acid and alcohol are heated in the presence of little conc. H_(2)SO_(4). On equlibrium being attained

Answer»

MOLE of ETHYL acetate is formed
2 mole of ethyl acetate are formed
`1//2` moles of ethyl acetate is formed
`2//3` moles of ethyl acetate is formed

Solution :In presence of little `H_(2)SO_(4)` (as catalyst) about 2/3 mole of each of `CH_(3)COOH and C_(2)H_(5)OH` react to from 2/3 mole of the product at equilibrium.
Discussion
41.

CH_3CH=overset(O)overset(||)(CHC)-CH_3overset(X)rarrCH_3CH=CHCOOH,Here the reagent 'X' is

Answer»

`K_(2) Cr_(2)O_(7)//H^(+)`
`NAOI, H^(+)`
PDC in `CH_2Cl_2`
`LiAlH_4`

Answer :B
Discussion
42.

CH_(3)CH(OH)CH overset(H_(3)O^(Theta))(to)CH_(3)CH(OH)COOH, In this reaction, the hydroxyacid obtained is-

Answer»

(+) - ENANTIOMER
(-) -enantiomer
50% (+) and 80% (-) - enantiomer
20% (+) and 80% (-) - enantiomer

Answer :C
Discussion
43.

CH_3CHO=CHCHO is oxidized to CH_3CH=CHCOOH using

Answer»

ALKALINE POTASSIUM permanganate
Acidified potassium permanganate
Selenium dioxide
Osmium tetroxide

Solution :`CH_3-CH=CH-CHOunderset"KMNO"OVERSET"ACIDIC"to CH_3-CH=CH-COOH`.
Discussion
44.

CH_(3)CHOandC_(6)H_(5)CH_(2)CHO can be distinguished by ______.

Answer»

TOLLENS REAGENT
FEHLINGS solution
Benedict
Iodoform test

Answer :D
Discussion
45.

CH_(3)CHO reacts most readily with

Answer»

`NH_(2)-NH_(2)`
`NH_(2)NH-underset(O)underset(||)( C) -NH_(2)`
`Ph-NH-NH_(2)`
`H_(2)N-OH`

ANSWER :A
Discussion
46.

CH_(3)CHO react with aqueous NaOH solution to form

Answer»

3-hydroxy butanal
2-hydroxy butanal
4-hydroxy butanal
3-hydroxy butanol

Solution :This reaction is aldol CONDENSATION
`2CH_(3)CHO OVERSET(dil NaOH)RARR underset(3-"Hydroxy butanal")(CH_(3)-underset(OH)underset(|)(CH)-CH_(2)-CHO)`
Discussion
47.

CH_(3)CHO overset(Na//C_(2)H_(5)OH)rarr X underset(170^(@)C)overset(conc. H_(2)SO_(4))rarr Y underset(AlCl_(3))overset(HCl)rarr Z. What happens when the final product 'Z' is treated with alkali solution?

Answer»

SOLUTION :GIVES ETHANOL
Discussion
48.

CH_(3)CHOoverset(HCN)rarr(A) overset(HOH)rarr(B) The product (B) is :

Answer»

Malonic acid
Glycolic acid
Lactic acid
Malic acid

Solution :
Discussion
49.

CH_(3)CHO overset("Chromic acid")rarr A overset(Ca(OH)_(2))rarr B underset("distillation")overset("dry")rarr C overset(NH_(2)OH)rarr D. Name the product 'D' of the above conversions.

Answer»

SOLUTION :acetixune
Discussion
50.

CH_(3)CHO overset(HCN)rarr X underset(H^(+))overset(H_(2)O)rarrY. What are the functional groups present in the final product 'Y' in the given sequence of reactions

Answer»

SOLUTION :`-COOH and -OH`
Discussion