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101.

The IUPAC name of , , is-A. 1,1-diethyl-2,2-dimethylpentaneB. 4,4-dimethyl-5,5-diethylpentaneC. 5,5-diethyl-4,4-dimethylpentaneD. 3-ethyl-4,4-dimethylheptane

Answer» Correct Answer - D
Discussion
102.

The IUPAC name of the compound is A. 6-bromo-2-chlorocyclohexeneB. 3-bromo-1-chlorocyclohexeneC. 1-bromo-3-chlorocyclohexeneD. 2-bromo-6-chlorocyclohex-1-en

Answer» Correct Answer - B
Discussion
103.

The IUPAC name of the compound , , isA. 1,1-dimethyl-3-cyclohexanolB. 1,1-dimethyl-3-hydroxy cyclohexaneC. 3,3-dimethyl-1-cyclohexanolD. 3,3-dimethyl-1-hydroxy cyclohexane

Answer» Correct Answer - C
Discussion
104.

Give the IUPAC names of the following compounds : (i) `H_(3)C-underset(CH_(3))underset(|)(N)-underset(C_(2)H_(5))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(3)` (ii) `CH_(2)(COOH)_(2)` (iii) `CH_(3)-CH=underset(CONH_(2))underset(|)(C)-CH_(2)-COOH`

Answer» Correct Answer - (i)3-(N,N-dimethylamino)-3-methyl pentane;
(ii) propan-1,3-dioic acid
(iii) 3-Carbamoylpent-3-enoic acid
Discussion
105.

Underlined carbon is sp hybridised in-A. `CH_(3)CH=CH_(2)`B. `CH_(3)CH_(2)-NH_(2)`C. `CH_(3)CONH_(2)`D. `CH_(3)CH_(2)CN`

Answer» Correct Answer - D
Discussion
106.

Which of the following compound has wrong IUPAC name?A. `CH_(3)CH_(2)-CH_(2)COO-CH_(2)CH_(3) " "("Ethyl butanoate")`B. `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-CHO " "(3-"Methylbutanal")`C. `CH_(3)-underset(OH)underset(|)(CH)-underset(CH_(3))underset(|)(CH)-CH_(3) " "(2-"Methyl"-3-"butanol")`D. `CH_(3)-underset(CH_(3))underset(|)(CH)-underset(O)underset(||)(C )-CH_(2)-CH_(3) " "(2-"Methyl"-3-"pentanone")`

Answer» Correct Answer - C
Discussion
107.

Which of the following is/are correct statement (s):A. B. C. D.

Answer» Correct Answer - A::B::D
( C)These are members.
Discussion
108.

Write the correct `IUPAC` name of the following:A. `{:(" O CH"_(3)" CH"_(3)),(" || | |"),(Cl-C-C=CH-CH-CH_(2)-CH_(3)):}`B. C. D.

Answer» (i)`2 ,4`-Dimethylhex-`2`-enoylchloride , (ii)`N`-phenylcyclohexanecarboxamide
(ii)Ethanoic propanoic anhydride , (iv)Isopropyl `3`-hydroxycyclohexane-`1`-carboxylate
Discussion
109.

Identify the relationship between the give compounds.A. B. C. D. `CH_(2)COOCH_(3)` & `CH_(3)COCH_(2)OH`

Answer» (1)Chain Isomers , (2)Chain Isomers , (3)metamers , (4)Functional isomers
Discussion
110.

All the members of a homologus series have sameA. Functional groupB. Empirical formulaC. General formulaD. All of these

Answer» Correct Answer - A::C
Discussion
111.

Identify the relationship between the give compounds.

Answer» Correct Answer - A::B::C
(a) Chain Isomers
(b) Functional isomers
(c ) Homologs.
Discussion
112.

The pair of compounds having the same general formula.A. B. C. D.

Answer» Correct Answer - A::B::D
Discussion
113.

The correct `IUPAC` name of the compound `CH_(2)=CH-CH_(2)-oversetoverset(C_(2)H_(5))(|)(CH)-CH_(3)`A. `4`-Ethylpent-`1`-eneB. `2`-Ethylpent-`4`-eneC. `4`-Methylhex-`1`-eneD. `3`-Methylhex-`1`-ene

Answer» Correct Answer - C
Discussion
114.

Molecular formula `C_(4)H_(10)O` representA. Two primary alcoholB. One secondary alcoholC. One tertiary alcoholD. All of these

Answer» Correct Answer - D
`CH_(3)-CH_(2)-undersetunderset(OH)(|)(CH)-CH_(3),CH_(3)-CH_(2)-CH_(2)-undersetunderset(OH)(|)(CH_(2)),CH_(3)-undersetunderset(CH_(3))(|)(CH)-CH_(2)-OH,CH_(3)-undersetunderset(CH_(3))(|)oversetoverset(OH)(|)(C)-CH_(3)`
Discussion
115.

Which of the following is the correct relationship? A. I & II are funtional isomers.B. II & IV are metamers.C. I & IV are position isomers.D. I & III are chain isomers.

Answer» Correct Answer - A::B::D
I & IV have diffenent functional group. i.e. `1^(@)` and `2^(@)` amine therefore these are functional isomers.
Discussion
116.

Which of the following `IUPAC` names are correct.A. `3`-Ethyl-`1,1`-dimethylcycohexaneB. `1`-Ethyl-`3`-methyl-`5`-propylcyclohexaneC. `2`-Bromo-`1`-chloro-`4`-fluorocyclohexaneD. `1`-Bromo-`4`-chloro-`3`-fluorocyclohexane

Answer» Correct Answer - A::B::C
Discussion
117.

A student names a certain compound as `2, 3`-diethylbutane. Its correct `IUPAC` names is:A. `2,3`-DimethylhexaneB. `3,4`-DimethylhexaneC. `2`-Ethyl-`3`-methpentaneD. `2`-Ethylbutane

Answer» Correct Answer - B
Discussion
118.

Select the structure with correct numbering in the chain:A. `Coverset(5)H_(2)=Coverset(4)H-Coverset(3)H_(2)-overset(2)(C)=overset(1)(C)H`B. `overset(1)CH_(3)-overset(2)(C)H=overset(3)(C)H-overset(4)(C)H_(2)-overset(5)(C)=overset(6)(C)H`C. `Coverset(7)(H_(2))=Coverset(6)(H)-Coverset(5)(H)=overset(4)(C)H-overset(3)(C)H_(2)-overset(2)(C)H=overset(1)(C)H_(2)`D. `Coverset(1)(H_(2))=Coverset(2)(H)-Coverset(3)(H)=overset(4)(C)H-overset(5)(C)H_(2)-overset(6)(C)=overset(7)(C)H`

Answer» Correct Answer - D
Discussion
119.

In which of the following compound `IUPAC` numbering is correct `:`A. B. C. D.

Answer» Correct Answer - C
Discussion
120.

Which of the following represent correct pair of homologous ?A. B. `Me-OH` & `MeCH_(2)-CH_(2)OH`C. `H-oversetoverset(O)(||)( C)-O-CH_(2)` & `CH_(3)-oversetoverset(O)(||)( C)-O-CH_(3)`D.

Answer» Correct Answer - B::C
`A,D` have different functional groups.So, cannot be homologous.
Discussion
121.

Which of the following `IUPAC` names are incorrect.A. B. C. D.

Answer» Correct Answer - C::D
Discussion
122.

The correct structure of `6`-Ethyl-`2,3,5`-trimethylnonane is:A. B. C. D.

Answer» Correct Answer - A
Discussion
123.

Me-O-C- Me end Et -O-CH=O are :A. Functional IsomersB. MetamersC. Positional isomersD. Chain isomers

Answer» Correct Answer - B
Discussion
124.

The correct `IUPAC` name of the alkane isA. `2`-Ethyl-`4`-methylhexaneB. `5`-Ethyl-`3`-methylhexaneC. `3,5`-DimethylheptaneD. `3,5`-Dimethylhexane

Answer» Correct Answer - C
Discussion
125.

How many structurally isomeric dibromo butanes are possible.

Answer» (a)`undersetunderset(Br)(|)C-undersetunderset(Br)(|)C-C-C` , (b)`undersetunderset(Br)(|)oversetoverset(Br)(|)(C)-C-C-C` , ( c )`undersetunderset(Br)(|)(C)-C-undersetunderset(Br)(|)(C)-C` , (d)`undersetunderset(Br)(|)(C)-C-C-undersetunderset(Br)(|)(C)` , (e)`C-undersetunderset(Br)(|)oversetoverset(Br)(|)(C)-C-C` , (f)`C-undersetunderset(Br)(|)(C)-undersetunderset(Br)(|)(C)-C`
Discussion
126.

In the organic compound `overset(1)(C)H_(2)=overset(2)(C)H-overset(3)(C)H_(2)-overset(4)(C)H_(2)-overset(5)C-=overset(6)CH` the pair of hybridised orbitals in the formation of : `C_(2)-C_(3)`A. `sp-sp^(2)`B. `sp-sp^(3)`C. `sp^(2)-sp^(3)`D. `sp^(3)-sp^(3)`

Answer» Correct Answer - C
Discussion
127.

Write `IUPAC` names of the following hydrocarbon (use common naming for hydrocarbon group. ,

Answer» Correct Answer - A::B::C::D
(a) s-Butylcyclohexane (b) t-Butylcyclohexane
(c) Isopropylcyclohexane (d) Neopentylcyclopentane
Discussion
128.

Which of the following compound is unsaturated hydrocarbon?A. `CH_(3)-oversetoverset(O)(||)(C)-CH_(3)`B. `CH_(3)-C=N`C. D.

Answer» Correct Answer - D
Discussion
129.

Which of the following is unsaturated hydrocarbon?A. B. C. D.

Answer» Correct Answer - D
Discussion
130.

How many aromatic isomers are possible for trichlorobenzene `(C_(6)H_(3)Cl_(3))`?A. 2B. 3C. 4D. 5

Answer» Correct Answer - B
Discussion
131.

Which compound is tertiary alcohol ?A. 1-propanolB. 2-methyl-1-hexanolC. 3-methyl-2-hexanolD. 2-methyl-2-hexanol

Answer» Correct Answer - D
Discussion
132.

3-Butenoic acid (for But-3-enoic acid) is represented as :A. B. C. D. none of these

Answer» Correct Answer - A
Discussion
133.

Write IUPAC name of the aromatic compounds (i)

Answer» (a)`2`-Methyl-`3`-phenylpropanal , (b)Methoxyphenylmethane (Benzyl methyl ether)
Discussion
134.

The number of compound(s) in which carbon atom of functional group can be counted in main chain is/are:

Answer» Correct Answer - A
Only in (f).
Discussion
135.

The correct combination of names for isomeric alcohols with molecular formula `C_(4)H_(10)O` is/areA. tert-butanol and 2-methylpropan-2-olB. tert-butanol and 1,1-dimethylethan-1-olC. n-butanol and butan-1-olD. isobutyl alcohol and 2-methylpropan-1-o

Answer» Correct Answer - A::C::D
Discussion
136.

A compound with molecular formula `C_(8)H_(14)`, contains 12 secondary and two tertiary H atoms. The compound is :A. B. C. D.

Answer» Correct Answer - B::C::D
Discussion
137.

In the nomenclature of , , priority order is -A. `-CH_(3)lt-OHltC=C`(first)B. `-OHlt-CH_(3)ltC=C`(first)C. `C=Clt-CH_(3)lt-OH`(first)D. `-CH_(3)ltC=Clt-OH`(first)

Answer» Correct Answer - D
Discussion
138.

Which of the following represents the correct `IUPAC` name of the compounds concerned?A. `2,2`-Dimethylpentane or `1,2`-DimethylpentaneB. `2,4,7`-Trimethyloctane or `2,5,7`-TrimethyloctaneC. `2`-Chloro-`4`-methylpentane or `4`-Chloro-`2`-methylpentaneD. But-`3`-yn-`1`-ol or But-`4`-ol-`1`-yne.

Answer» (1)`2,2`-Dimethylpentane , (2)`2,4,7`-Trimethyloctane
(3)`2`-Chloro-`4`-methylpentane , (4)But-`3`-yn-`1`-ol
Discussion
139.

The general formula `C_(n)H_(2n)O_(2)` could be for open chainA. diketonesB. carboxylic acidsC. diotsD. dialdehydes.

Answer» Correct Answer - B
Diketones: `C_(n)H_(2n-2)O_(2)`, Caroxylic acid: `C_(n)H_(2n)O_(2)`, Diols:`C_(n)H_(2n+2)O_(2)` ,Dialdehydes: `C_(n)H_(2n-2)O_(2)`
Discussion
140.

The IUPAC name of `CH_(3)-CH_(2)-NH-CH_(3)` is :-A. Methyl ethyl amineB. 1-methyl amino ethaneC. N-methyl ethanamineD. N-ethyl methanamine

Answer» Correct Answer - C
Discussion
141.

`C_(4)H_(8)O_(2)` represents :-A. An acid onlyB. An ester onlyC. An ketone onlyD. An acid and an ester also

Answer» Correct Answer - D
Discussion
142.

The third member of the family of alkenynes has the molecular formula :-A. `C_(3)H_(2)`B. `C_(5)H_(6)`C. `C_(6)H_(8)`D. `C_(4)H_(4)`

Answer» Correct Answer - C
Discussion
143.

The IUPAC name of `CH_(3)-CH_(2)-NH-CH_(3)` is :-A. Methyl ethyl amineB. 1-methyl amino ethaneC. N-methyl ethanamineD. N-ethyl methanamine

Answer» Correct Answer - C
Discussion
144.

The higer homologue of dimethylamine `(CH_(3)-NH-CH_(3))` has the structure :-A. `(CH_(3))_(3)N`B. `CH_(3)-CH_(2)-CH_(2)-NH_(2)`C. `CH_(3)-NH-CH_(2)-CH_(3)`D. `CH_(3)-underset(NH_(2))underset(|)(CH)-CH_(3)`

Answer» Correct Answer - C
Discussion
145.

How many tetramethyl benzene are possible:

Answer» Correct Answer - C
Discussion
146.

The correct IUPAC name of compound `CH_(3)-CH_(2)-underset(O)underset(||)(C)-underset(CN)underset(|)(CH)-CHO` isA. 2-cyano-3-oxopentanalB. 2-formyl-3-oxopentanenitrileC. 2-cyano-1,3-pentanedioneD. 1,3-dioxo-2-cyanopentane

Answer» Correct Answer - B
Here the main function group is `-CN`, which had nitrile suffix and CHO and CO are taken as substituents.
`overset(5)(C)H_(2)-overset(4)(C)H_(2)-underset(O)underset(||)overset(3)(C)-underset(CN)underset(1|)overset(2)(CH)-CHO` (2-formyl -3- oxopentanenitrile)
Discussion
147.

IUPAC name of `CH_(3)-underset(O)underset(||)(C)-underset(CH_(3))underset(|)underset(C=O)underset(|)(CH)-underset(O)underset(||)(C)-OCH_(3)`A. Methyl-2, 2-acetyl ethanoateB. 2,2-acetyl-1-methoxy ethanoneC. Methyl-2-acetyl-3-oxobutanoateD. none of these

Answer» Correct Answer - C
The principal functional group is ester group. `CH_(3)-underset(O)underset(||)(C)-underset(CH_(3))underset(|)underset(C=O)underset(|)(CH)-underset(O)underset(||)(C)-OCH_(3)` (Methyl-2-acetyl-3-oxobutanoate)
Discussion
148.

Write the IUPAC name of the following compound : (a) `CH_(3)-C-=C CH(CH_(3))_(2)` (b) `H_(3)C-CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-underset(CH_(3))underset(|)(CH)-C-=CH`

Answer» (a) 4-methyl-2-pentyne, (b) 3,4,4-trimethyl-1-hexyne
Discussion
149.

The correct IUPAC name of the comopund is : `CH_(3)-CH_(2)underset(CH_(3)CH_(2)-CH-CH_(2)CH_(2)CH_(2)CH_(3))underset(|)(C)=CH-overset(CH_(3))overset(|)(CHCH_(2))CH_(3)`A. 5,6-diethyl-8-methyl dec-6-eneB. 5,6-diethyl-3-methyl dec-4-eneC. 6-butyl-5-ethyl-3-methyl oct-4-eneD. 2,4,5-triethyl-3-ene

Answer» Correct Answer - B
Discussion
150.

Give the `IUPAC` name of the following compound. `CH_(2) = CH - CH (CH_(3))_(2)`A. 1,1-Dimethylprop-2-eneB. 3-Methylbut-1-eneC. 2-VinylpropaneD. 1-Isopropylethylene

Answer» Correct Answer - B
Discussion