Organic chemistry Questions

building block of nucleic acids are

A. amino acids

B. organic bases

C. fosphates

D. Nucleotides

D. Nucleotides

cytosine, uracil and thymine are ------ derivatives

A. pyrrole

B. furan

C. pyridine

D. Pyrimidine

D. Pyrimidine

adenine and guanine are -------- based bases

A. purine

B. pyrrole

C. pyridine

D. Pyrimidine

A. purine

palmitic acid and stearic acid are

A. saturated

B. unsaturated

C. both of them

A. saturated

oleic acid and linoleic acid are

A. saturated

B. unsaturated

C. both of them

B. unsaturated

fats molecules most part is

A. nonpolar

B. polar

C. Ionic

A. nonpolar

lipids are produced by dehydration of

A. glycerol and fats

B. ethyleneglycol and fatty acids

C. glycerol and fatty acids

C. glycerol and fatty acids

glycerol is important part of lipid formation it is a

A. monoatomic alcohol

B. diatomic alcohol

C. triatomic alcohol

D. no alcohol is

C. triatomic alcohol

sucrose contains two sugar units -

A. glucose and glucose

B. glucose and mannose

C. glucose and fructose

D. glucose and galactose

C. glucose and fructose

reduction of sugar aldehyde group produces

A. alcohol

B. ketone

C. carboxylic acid

A. alcohol

the shown structure is

A. galactose

B. fructose

C. glucose

D. Mannose

C. glucose

five-membered ring structure is called as a

A. puranose

B. pyranose

C. furanose

D. Fructo

C. furanose

fructose when forms closed ring structure, it is

A. six-membered

B. five-membered

C. four-membered

D. doesn't form

B. five-membered

six-membered colsed sugar unit is called as a

A. furanose

B. pyranose

C. furan

D. Pyrrole

B. pyranose

insulin, proteine is composed of ..... polypetide chains

A. 1

B. 2

C. 3

D. 4

B. 2

starch molecular formula is

A. C6H10O5

B. C6H12O6

C. (C6H10)6)n

D. (C6H10O5)n

D. (C6H10O5)n

secondary structure has 2 type structures: ............. and .............

A. coiled and sheet

B. alpha-helix and sequence

C. alpha-helix and coiled

D. alpha-helix and beta-sheet

D. alpha-helix and beta-sheet

the structure is formula of

A. Glu

B. Asn

C. Asp

D. Gln

D. Gln

what is name of the given amino acid

A. serine

B. cysteine

C. methionine

D. Lysine

B. cysteine

the following amino acid shows .......... properties

A. neutral

B. acidic

C. Basic

B. acidic

proteins are able to adopt ----- type of structures (confrmations)

A. 3

B: 2

C: 4

D: 5

C: 4

the amino acid Arg is a .......... amino acid

A. acidic

B. neutral

C. Basic

C. Basic

37. what compound is shown in photo?

A. Threonine (Thr)

B. Proline (Pro)

C. Ser

D. Gln

B. Proline (Pro)

the name of the amino acid is

A. Trp (tryptophane)

B. Thr (threonine)

C. Leucine (Leu)

D. Val (valine)

B. Thr (threonine)

the shown structure belongs to

A. Trp

B. Tyr

C. Phe

D. Pro

C. Phe

the given amino acid is

A. Gly

B. Ala

C. Leu

D. no amino acid

A. Gly

Histidine is ............... amino acid

A. acidic

B. basic

C. Neutral

B. basic

NH2-CH(R)-COOH HCl = ?

A. NH2-CH(R)-COOCl H2O

B. NH2-CH(R)-COOHCl

C. NH3-CH(R)-COOCl

D. NH3-CH(R)-COOHCl

D. NH3-CH(R)-COOHCl

NH2-CH(R)-COOH NaOH=...............H2O

A. NH2-CH(R)-CONa

B. NH2-CH(R)-COOHNa

C. NH2-CH(R)-COONa

D. no reaction

C. NH2-CH(R)-COONa

general formula of amino acids at neutral pH, is

A. NH3-CH(R)-COOH

B. NH2-CH(R)-COO

C. NH3-CH2-COO

D. NH3-CH(R)-COO

D. NH3-CH(R)-COO

the given compound is organic .........

A. salt

B. acid

C. base

D. none of above

A. salt

CH3-(CH2)4-CH2-NH-C6H5, the name of this amine is

A. heptyl aniline

B. phenylheptyl amine

C. phenylhexyl amine

D. hexylphenyl amine

D. hexylphenyl amine

the given structure containes nitro group (NO2) as substutuent. the correct name will be

A. N-methylnitro phenyl

B. N-methylnitro aniline

C. N-methyl-3-nitro aniline

D. none of above

C. N-methyl-3-nitro aniline

the following stuctural formula is of

A. N-methylphenylamine

B. dimethyl aniline

C. N-dimethyl aniline

D. none of them

C. N-dimethyl aniline

the following compound is

A. methlpropyl amine

B. 2-methylpropyl amine

C. dimethylpropyl amine

D. propyldimethyl amine

C. dimethylpropyl amine

C6H5NH2 HCl =

A. C6H5Cl NH3

B. C6H5NH3Cl

C. C6H5 NH3Cl

D. no reaction

B. C6H5NH3Cl

amine can be synthesize by reaction R-Cl 2NH3 =R-NH2 ....... , another product will be

A. NH2Cl

B. N2

C. NH3Cl

D. NH4Cl

D. NH4Cl

CH3-N-CH2CH3(CH3) is ....................amine

A. primary

B. secondary

C. tertiary

D. none of above

C. tertiary

CH3-CH2-NH-CH3 is a..................... amine

A. primary

B. secondary

C. tertiary

D. is not amine

B. secondary

the structure belongs to

A. acetal

B. phenylacetal

C. acetophenyl

D. acetophenone

D. acetophenone

R-COONa H2SO4 = R-COOH .....

A. Na2S

B. NaOH S

C. Na2SO3

D. Na2SO4

D. Na2SO4

if you oxidize primary alcohols, what will be final oxidation product?

A. secondary alcohol

B. aldehyde

C. carboxylic acid

C. carboxylic acid

during oxidation of aldehydes, form

A. alcohols

B. carboxylic acids

C. Ketones

B. carboxylic acids

R-CN 2H2O = R-COOH ....

N2

NH3

NH4OH

NO

NH3

silver mirror reaction, finish it R-CO 2[Ag(NH3)2]OH = R-COOH ... ... ...

A. Ag, N2, H2O

B. Ag2O, NH3, H2O

C. AgOH, N2, H2O

D. Ag, NH3, H2O

D. Ag, NH3, H2O

the following structure is of the compound

A. 3-bromo-4-methylpentanol

B. 3-bromo-4-methylpentanal

C. 3-bromo-2-methylpentanal

D. none of above

B. 3-bromo-4-methylpentanal

R-COH Cu(OH)2 →

A. RCOOH CuO

B. RCOOH Cu2O

C. RCOOH CuO H2O

D. RCOOH Cu2O H2O

D. RCOOH Cu2O H2O

R-CHOH-R' [O] → finish reaction

A. R-CH2OH

B. R-COOH

C. R-CO-R'

D. no oxidation

C. R-CO-R'

Oxidation prouct of ethylene is: CH2=CH2 [O]

A. formic acid

B. formaldehyde

C. acetaldehyde

D. none of above

C. acetaldehyde

ethylene glycol is a ................. alcohol

A. monoatomic

B. diatomic

C. Triatomic

B. diatomic

final product of alcohol oxidation, is

A. aldehyde

B. ketone

C. carboxylic acid

D. none of above

C. carboxylic acid

R-CH=CH2 H2O =

A. R-CH2-OH

B. R-CHOH-CH3

C. no reaction is uccuring

B. R-CHOH-CH3

ethers form by ........................... dehydration of alcohols

A. intramolecular

B. intermolecular

C. none of above

D. both of them

B. intermolecular

R-OH HO-R' , what will be organic product

A. ester

B. ether

C. no reaction

D. R-CH2OH

B. ether

tertiary alcohol's oxidation produce

A. aldehydes

B. ketones

C. no oxidation

C. no oxidation

by oxidation of secondary alcohols, form

A. aldehydes

B. ketones

C. no oxidation

B. ketones

finish reaction R-COH H2 =

A. R-CHOH

B. R-CH2OH

C. R-CO

B. R-CH2OH

R-C(OH)-R'R'' is a formula of ................... alcohol

primary

secondary

tertiary

none of above

tertiary

R-CH2Cl NaOH = ............ NaCl

A. R-CH2

B. R-OH

C. R-CH2OH

C. R-CH2OH

the number of heptane isomers is

A. 6

B. 7

C. 8

D. 9

D. 9

the compound is organic compound, but it acts as

A. acids

B. salts

C. bases

D. none of them

B. salts

the aromatic condenced structure belongs to

A. biphenyl

B. dibenzene

C. antracene

D. Naphtalene

D. Naphtalene

hexane isomer's number is

A. 3

B. 4

C. 5

D. 6

C. 5

what will be correct name of the compound?

A. 1,4-dimethyl-2,4-dichlorobenzene

B. 1,4-dichloro-dimethylbenzene

C. 1,4-dichloro-2,5-methylbenzene

D. 1,4-dichloro-2,5-dimethylbenzene

D. 1,4-dichloro-2,5-dimethylbenzene

during sulphonation of benzen, -------- is obtained

A. C6H5SO3

B. C6H5SO2

C. C6H5SO3H

D. C6H5SO4

C. C6H5SO3H

C6H6 HNO3 = ..... H2O

A. C6H6NO3

B. C6H5NO3

C. C6H6NO2

D. C6H5NO2

D. C6H5NO2

CH3-CH2-CH=CH2 HBr =

A. CH3-CH2-CH2-Br

B. CH3-CH2-CHBr-CH3

C. no reaction

B. CH3-CH2-CHBr-CH3

in alkenes, the hybridization type is

A. sp

B. sp3

C. sp2

D. non of them

C. sp2

this compound is called as

A. 2-methylbuten-3

B. 3-methylbutene-1

C. 2-methylbutene-1

D. none of them

B. 3-methylbutene-1

select the correct name of the compound

A. 2,3-dimethylhexene-3

B. 2,3-dimethylhepten-3

C. 2,5-dimethylhepten-3

D. 2-methylhepten-3

C. 2,5-dimethylhepten-3

Ethylene on reaction with bromine forms which among the following product

A)BrH2C-CH2Br

B)BrH2C=CH2Br

C)Br2HC=CHBr2

D)Br2HC-CHBr2

A)BrH2C-CH2Br

Which among these is not a structural isomer of the compound C4H8

A. butene-1

B. butene-2

C. butene-3

D. 2-methylpropene

C. butene-3

The following reaction is an example of

A. electrophilic substitution

B. nucleophilic substitution

C. radical substitution

D. none of above

A. electrophilic substitution

R-Br OH− → R-OH Br− reaction is an example of

A. electrophilic addition

B. electrophilic substitution

C. nucleophilic substitution

D. nucleophilic addition

C. nucleophilic substitution

109. give the correct name to the following compound

A. 2-bromo-3-chloro-3,4-methyl-4-nitrphexane

B. 2-bromo-3-chloro-3,5-methyl-5-nitrphexane

C. 2-bromo-3-chloro-3,5-methyl-5-nitrpheptane

D. 2-bromo-3-chloro-3,5-dimethyl-5-nitroheptane

D. 2-bromo-3-chloro-3,5-dimethyl-5-nitroheptane

give the following compounds the correct name

A. 1-methylbutene-1

B. 2-methylbutene-1

C. 2-methylbutene-2

D. none of above

C. 2-methylbutene-2

Identify correct step representing SN1 mechanism for the cleavage of ether with HI.

A. 1 and 3

B: 2 and 3

C: 1 and 4

D: 2 and 4

B: 2 and 3

Select the incorrect option

A. The aromatic hydrocarbon has a pleasant aroma (smell)

B. Some of the aromatic compounds are ring-shaped

C. Aromatic hydrocarbon can be either mono or polycyclic

D. Benzene is the simplest hydrocarbon

B. Some of the aromatic compounds are ring-shaped

Identify the correct statement which is related to aromatic hydrocarbon

A. It has only sigma bonds

B. It has only pi bonds

C. It has a sigma and two pi bonds

D. It has a sigma and delocalized pi bond

D. It has a sigma and delocalized pi bond

Which among the following is not an example of Acyclic compound

A. Acetaldehyde

B. ethane

C. cycloporane

D. Isobutane

C. cycloporane

Aliphatic compound is the other name for

A. Acyclic compounds

B. cyclic compounds

C. Closed chain compounds

D. none of above

A. Acyclic compounds

The substituent in the chain is named by replacing the "ane" in the alkanes by

A. ane

B. ene

C. one

D. Yl

D. Yl

Identify the smallest alkane which can form a ring structure (cycloalkane)

A. butane

B. methane

C. propane

D. Ethane

C. propane

Which among the following is NOT both a molecule and a compound?

A. C6 H12 O0

B. H2O

C. CO2

D. NaCl

D. NaCl

Atoms undergo bonding in order to ?

A. Attain stability

B. lose stability

C. move freely

D. increase energy

A. Attain stability

Which among the following is not an example of hydrogen bond?

A. H20

B. liquid HCl

C. NH3

D. CHCl3

E. CHCl3

B. liquid HCl

If a bond is made up of a large number of organic compound, then the bond is termed as?

A. ionic bond

B. covalent bond

C. metallic bond

D. dipolar bond

B. covalent bond