38 + Interview Questions in ORGANIC-CHEMISTRY-BASICS IN GENERAL AWARENESS Page 1 InterviewSolution

1.	Phenol is less acidic thanA. acetic acidB. p-methoxy phenolC. p-nitrophenolD. ethanol
Answer» Correct Answer - A::C

Discussion

2.	Which of the following has the most acidic hydrogen ?A. 3-hexanoneB. 2, 4-hexanedioneC. 2, 5-hexanedioneD. 2, 3-hexanedione
Answer» Correct Answer - B

Discussion

3.	Among the following the strongest base isA. `C_(6)H_(5)NH_(2)`B. `p-NO_(2)C_(6)H_(4)NH_(2)`C. `m-NO_(2)-C_(6)H_(4)NH_(2)`D. `C_(6)H_(5)CH_(2)NH_(2)`
Answer» Correct Answer - D

Discussion

4.	Among the following compounds, the strongest acid is:A. `HC equiv CH`B. `C_(6)H_(6)`C. `C_(2)H_(6)`D. `CH_(3)OH`
Answer» Correct Answer - D

Discussion

5.	In the following compounds, the order of acidity is:A. `III gt IV gt I gt II`B. `I gt IV gt III gt II`C. `II gt I gt III gt IV`D. `IV gt III gt I gt II`
Answer» Correct Answer - D

Discussion

6.	Which of the following compounds exhibits, stereoisomerism?A. 2-methylbutene-1B. 3-methylbutyne-1C. 3-methylbutanoic acidD. 2-methylbutanoic acid
Answer» Correct Answer - D

Discussion

7.	The number of `sigma`-and `pi`-bond in 1-buten-3-yne is:A. 5 sigma and 5 piB. 7 sigma and 3 piC. 8 sigma and 2 piD. 6 sigma and 4 pi
Answer» Correct Answer - B

Discussion

8.	The compound which would give the most stable carbcation on dehydration is :A. `CH_(3)-underset(CH_(3))underset(\|)(CH)-CH_(2)OH`B. `CH_(3)-underset(CH_(3))underset(\|)overset(CH_(3))overset(\|)(C)-OH`C. `CH_(3)-CH_(2)-CH_(2)-CH_(2)OH`D. `CH_(3)-overset(OH)overset(\|)(CH)-CH_(2)-CH_(3)`
Answer» Correct Answer - B

Discussion

9.	Identify the correct order of boiling points of the following compounds: `underset(1)(CH_(3)CH_(2)CH_(2)CH_(2)OH)`, `underset(2)(CH_(3)CH_(2)CH_(2)CHO)` `underset(3)(CH_(3)CH_(2)CH_(2)COOH)`A. `1 gt 2 gt 3`B. `3 gt 1 gt 2`C. `1 gt 3 gt 2`D. `3 gt 2 gt 1`
Answer» Correct Answer - B

Discussion

10.	The optically active tartaric acid is named as `D-(+)-` tartaric acid because it has a positiveA. optical rotation and is derived from D-glucoseB. pH in organic solventC. optical rotation and is drived from D-(+)-glyceraldehydesD. optical rotation when substituted by deuterium
Answer» Correct Answer - C

Discussion

11.	The molecule (s) that will have dipole moment is/are:A. 2, 2-dimethyl propaneB. trans-2-penteneC. cis-3-hexeneD. 2, 2, 3, 3-tetramethyl butane
Answer» Correct Answer - B::C

Discussion

12.	In the Newman projection for `2,2`- dimethylbutane `X` and `Y` can, respectively, beA. H and HB. H and `C_(2)H_(5)`C. `C_(2)H_(5)` and HD. `CH_(3)` and `CH_(3)`
Answer» Correct Answer - B::D

Discussion

13.	The correct of stability for the following species is : A. `(II) gt (IV) gt (I) gt (III)`B. `(I) gt (II) gt (III) gt (IV)`C. `(II) gt (I) gt (IV) gt (III)`D. `(I) gt (III) gt (II) gt (IV)`
Answer» Correct Answer - D

Discussion

14.	Among the following, the least stable resonance structure is :A. B. C. D.
Answer» Correct Answer - A

Discussion

15.	Which of the following molecules is least resonance stabilised?A. B. C. D.
Answer» Correct Answer - D

Discussion

16.	Keto-enol tautomerism is observed inA. `C_(6)H_(5)-overset(O)overset(\|\|)(C)-H`B. `C_(6)H_(5)-overset(O)overset(\|\|)(C)-CH_(3)`C. `C_(6)H_(5)-overset(O)overset(\|\|)(C)-C_(6)H_(5)`D. `C_(6)H_(5)-overset(O)overset(\|\|)(C)-CH_(2)-overset(O)overset(\|\|)(C)-CH_(3)`
Answer» Correct Answer - B::D

Discussion

17.	Match the reaction in Column I with appropriate options in Column II.
Answer» Correct Answer - `A rarr r, s; B rarr t; C rarr p, q; D rarr r`

Discussion

18.	If `2`-methylbutane is chlorinated to produce chloro-2 - methylbutane, how many isomers (including stereoisomers) would be formed?A. 3B. 4C. 5D. 6
Answer» Correct Answer - d

Discussion

19.	Which of the following compounds will show geometrical isomerism?A. 2-buteneB. propeneC. 1-phenyl propeneD. 2-methyl-2-butene
Answer» Correct Answer - A::C

Discussion

20.	Rotation of groups about bond are usually restricted due to large torsional strain and it is due to this reason cis and trans isomers have their independent existence. However certain structural modification in the compound makes the rotation of groups about double possible and hence for such compound, cis and trans isomer exist together in equilibrium. Which of the following compound has such structural feature and its cis and trans isomers exist together in equilibrium?A. `CH_(3)-CH=CH-CHO`B. `CH_(3)-CH=CH-CH_(3)`C. `Cyclohexyl`-CH=CH-`Cyclohexyl`D. `CH_(3)-CH=NH`
Answer» Correct Answer - a

Discussion

21.	For 1-methoxy-1, 3-butadiene, which of the following resonating structure is least stable?A. `overset()(C)H_(2)-overset(o+)(C)H-CH=CH-O-CH_(3)`B. `overset()(C)H_(2)-CH=CH-CH=overset(o+)(O)-CH_(3)`C. `CH_(2)=CH-overset(o+)(C)H=overset()(C)H-O-CH_(3)`D. `CH_(2)=CH-overset()(C)H-CH=overset(o+)(O)-CH_(3)`
Answer» Correct Answer - C

Discussion

22.	The IUPAC name(s) of the following compound is (are) ltbr. A. 4-methylchlorobenzeneB. 4-chlorotolueneC. 1-chloro-4-methylbenzeneD. 1-methyl-4-chlorobenzene
Answer» Correct Answer - B::C

Discussion

23.	Assertion Geometrical isomers are non-inter- convertible by rotation. Reason Alkenes have restricted rotation about pi`(pi)` bond.A. Both assertion and reason are correct and reason is the correct explanation of the assertion.B. Both assertion and reason are correct and reason is not the correct explanation of the assertion.C. Assertion is correct but reason is incorrectD. Assertion is incorrect but reason is correct
Answer» Correct Answer - b

Discussion

24.	Statement I: Molecules that are non-superimposable on their mirror images are chiral. Statement II: All chiral molecules have chiral centres.A. Statement I is correct, Statement II is correct, Statement II is the correct explanation of statement I.B. Statement I is correct, Statement II is correct, Statement II is not the correct explanation of statement I.C. Statement I is correct, Statement II is incorrectD. Statement I is incorrect, Statement II is correct
Answer» Correct Answer - C

Discussion

25.	Isomers which are mirror images are knows as ….. (superimposable, non-superimposable, enantiomers, diastereomers, epimers)
Answer» Correct Answer - Non-superimposable, Enantiomers

Discussion

26.	Which of the following is/are true for a free radical?A. It is always formed by homoletic cleavage of bondB. It is always electron deficient, act as a Lewis acidC. It is always paramagneticD. It always disproportionate to some extent
Answer» Correct Answer - a, c

Discussion

27.	4-Methyl benzene sulphonic acid with sodium acetate to giveA. B. C. D.
Answer» Correct Answer - C

Discussion

28.	Assertion A molecule containing chiral carbon must be non-superimposable on its mirror image. ltbr. Reason A chiral carbon is bonded to four different atoms or groups.A. Both assertion and reason are correct and reason is the correct explanation of the assertion.B. Both assertion and reason are correct and reason is not the correct explanation of the assertion.C. Assertion is correct but reason is incorrectD. Assertion is incorrect but reason is correct
Answer» Correct Answer - d

Discussion

29.	Assertion p-nitro toluene undergoes faster free radical chlorination at the methyl group than toluene. Reason Nitro group from para position promote hyperconjugation in toluene.A. Both assertion and reason are correct and reason is the correct explanation of the assertion.B. Both assertion and reason are correct and reason is not the correct explanation of the assertion.C. Assertion is correct but reason is incorrectD. Assertion is incorrect but reason is correct
Answer» Correct Answer - d

Discussion

30.	The correct statement(s) concerning the structures E, F and G is/are A. E, F and G are resonance structuresB. E, F and E, g are tautomersC. F and G are geometrical isomersD. F and G are diastereomers
Answer» Correct Answer - B::C::D

Discussion

31.	The correct statement(s) about the compound `H_(3)C(HO)HC-CH=CH-CH(OH)CH_(3) (X)` is/areA. The total number of stereoisomers possible for X is 6B. The total number of diastereomers possible for X is 3C. If the stereochemistry about the double bond in X is trans, the number of enantiomers possible for X is 4D. If the stereochemistry about the double bond in x is cis, the number of enantiomers possible for X is 2
Answer» Correct Answer - A::D

Discussion

32.	The IUPAC name of the compound having the formula is `H_(3)C-underset(" "CH_(3))underset(\|)overset(" "CH_(3))overset(\|)(C)-CH=CH_(2)`A. 3, 3, 3-trimethyl-1-propeneB. 1, 1, 1-trimethyl-2-propeneC. 3, 3-dimethyl-1- buteneD. 2, 2-dimethyl-3-butene
Answer» Correct Answer - C

Discussion

33.	The bond between carbon atom (1) and carbon atom (2) in the compound `N -= C - CH = CH_(2)` in involves the hybridisation as :A. `sp^(2)` ans `sp^(2)`B. `sp^(3)` and `sp`C. `sp` and `sp^(2)`D. `sp` and `sp`
Answer» Correct Answer - C

Discussion

34.	The hybridisation of `C` atoms in `(C - C)` single-bond of `H - C -= C - CH = CH_(2)` is :A. `sp^(3)-sp^(3)`B. `sp^(2)-sp^(3)`C. `sp-sp^(2)`D. `sp^(3)-sp`
Answer» Correct Answer - D

Discussion

35.	Which of the following represent the given mode of hybridisation `sp^(2)-sp^(2)-sp-sp` from left to right?A. `H_(2)C=CH-C equiv N`B. `HC equiv C-C equiv CH`C. `H_(2)C=C=C=CH_(2)`D.
Answer» Correct Answer - A

Discussion

36.	In allene `(C_(3)H_(4))`, the type(s) of hybridisation of the carbon atoms, is (are)A. `sp` and `sp^(3)`B. `sp` and `sp^(2)`C. only `sp^(3)`D. `sp^(2)` and `sp^(3)`
Answer» Correct Answer - B

Discussion

37.	A gaseous hydrocarbon gives upon combustion, 0.72 g of water and 3.08 g of `CO_(2)`. The empirical formula of the hydrocarbon isA. `C_(2)H_(4)`B. `C_(3)H_(4)`C. `C_(6)H_(5)`D. `C_(7)H_(8)`
Answer» Correct Answer - D

Discussion

38.	The hyperconjugative stabilities of tert-butyl cation and `2`-butene, respectively, are due toA. `sigma rarr p` (empty) and `sigma rarr pi^()` electron delocalisationsB. `sigma rarr sigma^()` and `sigma rarr pi` electron delocalisationsC. `sigma rarr p` (filled) and `sigma rarr pi` electron delocalisationsD. `p`(filled) `rarr sigma^()` and `sigma rarr pi^()` electrons delocalisations
Answer» Correct Answer - A

Discussion

Explore topic-wise InterviewSolutions in .

Phenol is less acidic thanA. acetic acidB. p-methoxy phenolC. p-nitrophenolD. ethanol

Which of the following has the most acidic hydrogen ?A. 3-hexanoneB. 2, 4-hexanedioneC. 2, 5-hexanedioneD. 2, 3-hexanedione

Among the following the strongest base isA. `C_(6)H_(5)NH_(2)`B. `p-NO_(2)C_(6)H_(4)NH_(2)`C. `m-NO_(2)-C_(6)H_(4)NH_(2)`D. `C_(6)H_(5)CH_(2)NH_(2)`

Among the following compounds, the strongest acid is:A. `HC equiv CH`B. `C_(6)H_(6)`C. `C_(2)H_(6)`D. `CH_(3)OH`

In the following compounds, the order of acidity is:A. `III gt IV gt I gt II`B. `I gt IV gt III gt II`C. `II gt I gt III gt IV`D. `IV gt III gt I gt II`

Which of the following compounds exhibits, stereoisomerism?A. 2-methylbutene-1B. 3-methylbutyne-1C. 3-methylbutanoic acidD. 2-methylbutanoic acid

The number of `sigma`-and `pi`-bond in 1-buten-3-yne is:A. 5 sigma and 5 piB. 7 sigma and 3 piC. 8 sigma and 2 piD. 6 sigma and 4 pi

The compound which would give the most stable carbcation on dehydration is :A. `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)OH`B. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-OH`C. `CH_(3)-CH_(2)-CH_(2)-CH_(2)OH`D. `CH_(3)-overset(OH)overset(|)(CH)-CH_(2)-CH_(3)`

Identify the correct order of boiling points of the following compounds: `underset(1)(CH_(3)CH_(2)CH_(2)CH_(2)OH)`, `underset(2)(CH_(3)CH_(2)CH_(2)CHO)` `underset(3)(CH_(3)CH_(2)CH_(2)COOH)`A. `1 gt 2 gt 3`B. `3 gt 1 gt 2`C. `1 gt 3 gt 2`D. `3 gt 2 gt 1`

The optically active tartaric acid is named as `D-(+)-` tartaric acid because it has a positiveA. optical rotation and is derived from D-glucoseB. pH in organic solventC. optical rotation and is drived from D-(+)-glyceraldehydesD. optical rotation when substituted by deuterium

The molecule (s) that will have dipole moment is/are:A. 2, 2-dimethyl propaneB. trans-2-penteneC. cis-3-hexeneD. 2, 2, 3, 3-tetramethyl butane

In the Newman projection for `2,2`- dimethylbutane `X` and `Y` can, respectively, beA. H and HB. H and `C_(2)H_(5)`C. `C_(2)H_(5)` and HD. `CH_(3)` and `CH_(3)`

The correct of stability for the following species is : A. `(II) gt (IV) gt (I) gt (III)`B. `(I) gt (II) gt (III) gt (IV)`C. `(II) gt (I) gt (IV) gt (III)`D. `(I) gt (III) gt (II) gt (IV)`

Among the following, the least stable resonance structure is :A. B. C. D.

Which of the following molecules is least resonance stabilised?A. B. C. D.

Keto-enol tautomerism is observed inA. `C_(6)H_(5)-overset(O)overset(||)(C)-H`B. `C_(6)H_(5)-overset(O)overset(||)(C)-CH_(3)`C. `C_(6)H_(5)-overset(O)overset(||)(C)-C_(6)H_(5)`D. `C_(6)H_(5)-overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3)`

Match the reaction in Column I with appropriate options in Column II.

If `2`-methylbutane is chlorinated to produce chloro-2 - methylbutane, how many isomers (including stereoisomers) would be formed?A. 3B. 4C. 5D. 6

Which of the following compounds will show geometrical isomerism?A. 2-buteneB. propeneC. 1-phenyl propeneD. 2-methyl-2-butene

The IUPAC name(s) of the following compound is (are) ltbr. A. 4-methylchlorobenzeneB. 4-chlorotolueneC. 1-chloro-4-methylbenzeneD. 1-methyl-4-chlorobenzene

Isomers which are mirror images are knows as ….. (superimposable, non-superimposable, enantiomers, diastereomers, epimers)

Which of the following is/are true for a free radical?A. It is always formed by homoletic cleavage of bondB. It is always electron deficient, act as a Lewis acidC. It is always paramagneticD. It always disproportionate to some extent

4-Methyl benzene sulphonic acid with sodium acetate to giveA. B. C. D.

The correct statement(s) concerning the structures E, F and G is/are A. E, F and G are resonance structuresB. E, F and E, g are tautomersC. F and G are geometrical isomersD. F and G are diastereomers

The IUPAC name of the compound having the formula is `H_(3)C-underset(" "CH_(3))underset(|)overset(" "CH_(3))overset(|)(C)-CH=CH_(2)`A. 3, 3, 3-trimethyl-1-propeneB. 1, 1, 1-trimethyl-2-propeneC. 3, 3-dimethyl-1- buteneD. 2, 2-dimethyl-3-butene

The bond between carbon atom (1) and carbon atom (2) in the compound `N -= C - CH = CH_(2)` in involves the hybridisation as :A. `sp^(2)` ans `sp^(2)`B. `sp^(3)` and `sp`C. `sp` and `sp^(2)`D. `sp` and `sp`

The hybridisation of `C` atoms in `(C - C)` single-bond of `H - C -= C - CH = CH_(2)` is :A. `sp^(3)-sp^(3)`B. `sp^(2)-sp^(3)`C. `sp-sp^(2)`D. `sp^(3)-sp`

Which of the following represent the given mode of hybridisation `sp^(2)-sp^(2)-sp-sp` from left to right?A. `H_(2)C=CH-C equiv N`B. `HC equiv C-C equiv CH`C. `H_(2)C=C=C=CH_(2)`D.

In allene `(C_(3)H_(4))`, the type(s) of hybridisation of the carbon atoms, is (are)A. `sp` and `sp^(3)`B. `sp` and `sp^(2)`C. only `sp^(3)`D. `sp^(2)` and `sp^(3)`

A gaseous hydrocarbon gives upon combustion, 0.72 g of water and 3.08 g of `CO_(2)`. The empirical formula of the hydrocarbon isA. `C_(2)H_(4)`B. `C_(3)H_(4)`C. `C_(6)H_(5)`D. `C_(7)H_(8)`