50% inversion of configuration of molecules take place in a
1.E1 - reaction
2.E2 - reaction
3.SN1 - reaction
4.SN2 - reaction
Posted Date:-2021-09-09 04:21:22
Acidic amino acids have
1.2 amino groups and 1 carboxylic group
2.1 amino and 1 carboxylic groups
3.2 carboxylic groups and 1 amino group
4.2 amino and 2 carboxylic groups
Posted Date:-2021-09-09 04:21:22
Alkyl halides are considered to be very reactive compounds towards nucleophile because
1.they have an electrophilic carbon
2.they have an electrophilic carbon & a good leaving group
3.they have an electrophilic carbon & a bad leaving group
4.they have a nucleophilic carbon & a good leaving group
Posted Date:-2021-09-09 04:21:22
Alkyl halides undergo a type of reaction
1.Nucleophilic substitution
2.Nucleophilic addition
3.Elimination
4.both a & c
Posted Date:-2021-09-09 04:21:22
C5H12 has the number of isomers
1.one
2.two
3.three
4.four
Posted Date:-2021-09-09 04:21:22
Carboxylic acid reacts with ammonia to form ammonium salts which on heating produces
1.CO2
2.Alkane
3.Ester
4.Acidamide
Posted Date:-2021-09-09 04:21:22
During SN2 mechanism carbon atom changes its state of hybridization as
1.sp?sp2
2.sp2?sp3
3.sp3?sp
4.sp3?sp2
Posted Date:-2021-09-09 04:21:22
Elimination bimolecular reactions involve
1.first order kinetics
2.second order kinetics
3.third order kinetics
4.zero order kinetics
Posted Date:-2021-09-09 04:21:22
Ethyl chloride with nascent hydrogen produces
1.methane
2.ethane
3.propane
4.butane
Posted Date:-2021-09-09 04:21:22
Ethylene epoxide treated with Grignards reagent followed by acid hydrolysis yield
1.primary alcohol
2.secondary alcohol
3.tertiary alcohol
4.dihydric alcohol
Posted Date:-2021-09-09 04:21:22
For which mechanisms the first step involved is the same?
1.E1 + E2
2.E2 + SN2
3.E1 and SN1
4.SN1 and SN2
Posted Date:-2021-09-09 04:21:22
Glycine is the name of an amino acid because
1.Sweet taste
2.Bitter taste
3.Shining appearance
4.Green colour
Posted Date:-2021-09-09 04:21:22
Grignard reagent is reactive due to
1.the presence of halogen atom
2.the presence of magnesium atom
3.the polarity of C-Mg bond
4.all
Posted Date:-2021-09-09 04:21:22
In elimination reactions of alkyl halide which site is more susceptible for the attack of base
1.? - carbon
2.? - carbon
3.? - hydrogen
4.? - hydrogen
Posted Date:-2021-09-09 04:21:22
In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms
1.two
2.three
3.one
4.four
Posted Date:-2021-09-09 04:21:22
In the formation of Zwitter ions proton goes from
1.Carboxyl to amino group
2.Amino to carboxyl group
3.Amino group only
4.Carboxyl group only
Posted Date:-2021-09-09 04:21:22
SN2 reaction can be best carried out with
1.primary alkyl halide
2.secondary alkyl halide
3.tertiary alkyl halide
4.all
Posted Date:-2021-09-09 04:21:22
The acid which is used as ink remover is
1.Oxalic acid
2.Succinic acid
3.Adipic acid
4.Acetic acid
Posted Date:-2021-09-09 04:21:22
The best method of preparation of alkyl halides is a reaction of alcohol with
1.Zn / HCI
2.SOCl2 / Pyridine
3.PCI3
4.PCI5
Posted Date:-2021-09-09 04:21:22
The common name of propane 1 3-dioic is
1.Oxalic acid
2.Aromatic acid
3.Malonic acid
4.Fumaric acid
Posted Date:-2021-09-09 04:21:22
The common thing in phthalic acid and oxalic acid is that both are
1.Aromatic
2.Dicarboxylic
3.Hydrocarbons
4.Strong acids
Posted Date:-2021-09-09 04:21:22
The ether used in Wurtz synthesis is
1.acidic
2.basic
3.aqueous
4.dry
Posted Date:-2021-09-09 04:21:22
the fractional distillation of petroleum produces gasoline up to
1.10%
2.15%
3.20%
4.30%
Posted Date:-2021-09-09 04:21:22
The general formula of cycloalkene is
1.CnH2n
2.CnH2n+2
3.CnH2n-1
4.CnH2n-2
Posted Date:-2021-09-09 04:21:22
The irritation caused by red ants bite is due to
1.Lactic acid
2.Formic acid
3.Uric acid
4.Acetic acid
Posted Date:-2021-09-09 04:21:22
The number of molecules taking part in the rate determining step is called
1.Order of reaction
2.Rate of reaction
3.Mole of a reaction
4.Extent of a reaction
Posted Date:-2021-09-09 04:21:22
The organic acid that does not has COOH group is
1.phthalic acid
2.carbolic acid
3.Maleic acid
4.Succinic acid
Posted Date:-2021-09-09 04:21:22
The rate of E1 reaction depends upon
1.the concentration of substrate
2.the concentration of nucleophile
3.the concentration of substrate as well as nucleophile
4.base the concentration of substrate as well as nucleophile
Posted Date:-2021-09-09 04:21:22
The term internal salt refers to
1.Acidic character of amino acids
2.Basic character of amino acids
3.Dipolar character of amino acids
4.Non-polar structure of amino acids
Posted Date:-2021-09-09 04:21:22
The test which is used for the identification of amino-acids is
1.Ninhydrin test
2.Molisch test
3.Biuretic test
4.Benedict test
Posted Date:-2021-09-09 04:21:22
What is the order of kinetics in the SN1 mechanism?
1.Zero
2.First
3.Second
4.Third
Posted Date:-2021-09-09 04:21:22
What will be the order of reaction of a reaction whose rate can be expressed as R = K [A] [B]?
1.Zero
2.One
3.Two
4.Three
Posted Date:-2021-09-09 04:21:22
What will be the products when reactants are alcohol & thionyl chloride in the presence of pyridine?
1.RC?+S+HC?
2.RC?+SO2+HC?
3.RC?+SO2+H2O
4.RC?+S+H2O
Posted Date:-2021-09-09 04:21:22
When - COOH is attached directly to the benzene ring the acid is called
1.Aliphatic
2.Alicyclic
3.Carboxylic
4.Aromatic
Posted Date:-2021-09-09 04:21:22
When CO2 is made to react with ethyl magnesium iodide followed by acid hydrolysis the product formed is
1.propane
2.propanoic acid
3.propanal
4.propanol
Posted Date:-2021-09-09 04:21:22
When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed?
1.2 moles of ethane
2.1 mole of ethane
3.2 moles of butane
4.1 mole of butane
Posted Date:-2021-09-09 04:21:22
Which acid is the manufacture of synthetic rubber?
1.Acetic acid
2.Formic acid
3.Carbonic acid
4.Benzoic acid
Posted Date:-2021-09-09 04:21:22
Which alkyl halide has the highest reactivity for a particular alkyl group?
1.R-F
2.R-C?
3.R-Br
4.R-I
Posted Date:-2021-09-09 04:21:22
Which alkyl halide out of the following may follow both SN1 and SN2 mechanism?
1.CH3-X
2.(CH3)3 C-CH2 - X
3.(CH3)2 CH - X
4.(CH3)3 C - X
Posted Date:-2021-09-09 04:21:22
Which C-X bond has the highest bond energy per mole?
1.C-F
2.C-C?
3.C-Br
4.C-I
Posted Date:-2021-09-09 04:21:22
Which is not heterocyclic compound
1.Furan
2.Thiophene
3.Aniline
4.Pyridine
Posted Date:-2021-09-09 04:21:22
Which of the following is the strongest acid?
1.Water
2.Formic acid
3.Acetic acid
4.Propanoic acid
Posted Date:-2021-09-09 04:21:22
Which one among the following is not a good leaving group?
1.HSO4
2.C?-
3.OH-
4.Br-
Posted Date:-2021-09-09 04:21:22
Which one is not a nucleophile?
1.C2H5O-
2.SCN-
3.NH3
4.H3C+
Posted Date:-2021-09-09 04:21:22
Which one of following amino acid is neither acidic nor a basic in nature?
1.Lysine
2.Histidine
3.Proline
4.Glutamic acid
Posted Date:-2021-09-09 04:21:22
Which one of the following acids is present in lemon juice?
1.Citric acid
2.Benzoic acid
3.Tartaric acid
4.Oxalic acid
Posted Date:-2021-09-09 04:21:22
Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone?
1.primary alcohol
2.secondary alcohol
3.tertiary alcohol
4.dihydric alcohol
Posted Date:-2021-09-09 04:21:22
Which one of the following molecules does not form alcohol when reacts with Grignard reagent?
1.formaldehyde
2.acetaldehyde
3.propanone
4.carbondioxide
Posted Date:-2021-09-09 04:21:22
Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent
1.formaldehyde
2.ketone
3.ethylene epoxide
4.both a & c
Posted Date:-2021-09-09 04:21:22
Which one of the following species is not an electrophile?
1.NH3
2.Br+
3.H+
4.BF3
Posted Date:-2021-09-09 04:21:22