Biology/Biology MCQ Question - Organic Chemistry Sample Test,Sample questions

Question:
2-propanol and 1-propanol show the isomerism

1.metamerism

2.functional group isomerism

3.geometric isomerism

4.position isomerism


Question:
A double bond consists of

1.Two sigma bonds

2.Two Pi bonds

3.One sigma and one Pi bonds

4.One sigma and two Pi bonds


Question:
A single atom or group of atoms which gives characteristic properties to a compound is called

1.radical

2.hydrocarbon

3.functional group

4.ion


Question:
According to vital force theory

1.Oorganic compounds can be synthesized from inorganic compounds

2.organic compounds cannot be synthesized from inorganic compounds

3.organic compounds can be synthesized by animals

4.organic compounds can be synthesized by plants


Question:
All the elements in group VIA are _______ in nature.

1.hygroscopic

2.metals

3.polymeric

4.all of above


Question:
Arsenic oxides are removed by passing through

1.Ferric hydroxide

2.Sodium hydroxide

3.Calcium hydroxide

4.Aluminium hydroxide


Question:
At low temperature and pressure cracking can be done in presence of catalyst

1.Al2O3

2.Fe2O3

3.Al2O3 and SiO2

4.Fe2O3 and SiO2


Question:
Chemical properties of first member of homologous series with respect to other members are

1.same

2.different

3.depends upon number of C atoms

4.depends upon number of H atoms


Question:
Coal is produced after a long time decay of

1.animals

2.fossils

3.wood

4.all of the above


Question:
Compound containing benzene ring in their structure are

1.aliphatic

2.aromatic

3.carboxylic acid

4.carbohydrates


Question:
Compounds having same molecular formula but differ in structural formula are called

1.polymer

2.monomer

3.isomer

4.allotropes


Question:
Crude oil is blackish coloured liquid produced after the decay of organic matter present between

1.earth layer

2.mountains

3.sedimentary rocks

4.rocks


Question:
Ether functional group can be represented as

1.?OH

2.R-CO-R

3.R-O-R

4.R-COOH


Question:
FeSO4 forms brown ring with

1.N2O3

2.NO2

3.NO

4.N2O


Question:
First organic compound synthesized in laboratory was

1.tartaric acid

2.ethyl alcohol

3.methanol

4.urea


Question:
Geometric isomerism is usually found in

1.Alkanes

2.Alkenes

3.Alkynes

4.Esters


Question:
Hydro carbons which burn with smoky flame are called

1.Aliphatic

2.Alicyclic

3.Aromatic

4.Aldehyde


Question:
In cyano group the carbon atom shows which kind of hybridization

1.sp2

2.sp

3.sp3

4.none of the above


Question:
In sp3 hybridization the expected geometry of molecules will be

1.square planar

2.trigonal pyramidal

3.tetrahedral

4.linear


Question:
In which compound nitrogen has maximum oxidation state

1.N2O

2.NO2

3.HNO2

4.HNO3


Question:
Isomerism which is present only in alkene is

1.structural isomerism

2.metamerism

3.cis-trans isomerism

4.both b and c


Question:
Main source of organic compounds is

1.Animal

2.Fossil

3.Coal

4.Plants


Question:
Methane is used in power generation in chemical industries being a

1.natural gas

2.good caloric value

3.cheaper

4.All


Question:
Octane number 2 2 4-trimethyl pentane is

1.100

2.90

3.80

4.70


Question:
Octane number can be improved by

1.Isomerization

2.Adding (C2H5)4 Pb

3.Adding (CH3)4 Pb

4.All


Question:
Only sigma bonds are present in

1.propene

2.butanoic acid

3.butanal

4.ethoxy ethane


Question:
Organic compounds are soluble in

1.polar solvent

2.non-polar solvent

3.alkalies

4.water


Question:
Organic compounds that are essentially nonpolar and exhibit weak intermolecular forces have

1.Low melting points

2.Low vapour pressure

3.High boiling points

4.High electrical conductivity


Question:
Oxygen and sulphur resemble in all except

1.Electronic conviguration of valence shell electrons

2.Show allotropy

3.Polymeric

4.Show same oxidation state


Question:
Oxygen does not react with all except

1.Alkali

2.Acid

3.Water

4.Metals


Question:
P2O5 is a hygroscopic powder which sublimes at

1.260?C

2.360?C

3.630?C

4.620?C


Question:
Pentane and 2-methyl butance have the same

1.Boiling point

2.Melting point

3.Percentage composition

4.Structural formula


Question:
Phosphoric acid is a weak acid and its basicity is

1.1

2.3

3.0

4.2


Question:
Propene can exhibit

1.cis-trans isomerism

2.geometric isomerism

3.both a & b

4.none of the above


Question:
Rate of reactions of most organic compounds are

1.very slow

2.very fast

3.slow

4.no regular character present


Question:
The chemical composition of cinnabar is

1.ZnS

2.PbS

3.HgS

4.FeS


Question:
The element of group VIA which is a non-metal is

1.S

2.Se

3.Te

4.Po


Question:
The first organic compound was synthesized in laboratory by

1.Wohler

2.Kolbe

3.Berzilius

4.Berthelot


Question:
The gas which cannot be dried by conc. H2SO4

1.SO2

2.H2S

3.CO2

4.C2H4


Question:
The metallic sound produced by engine due to the pre-ignition of fuel is called

1.knocking

2.reforming

3.cracking

4.a and c


Question:
The organic compounds having very high molecular weight are called

1.carboxylic acids

2.ketones

3.aldehydes

4.polymers


Question:
The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight

1.polymerization

2.pyrolysis

3.isomerism

4.no such process occurs


Question:
The property of carbon chain formation is called

1.catenation

2.hybridization

3.polymerization

4.solvation


Question:
The structure of ethyne is

1.angular

2.trigonal

3.linear

4.trigonal planar


Question:
When sulphuric acid is treated with ethanol sulphuric acid behaves like

1.an acid

2.a dehydrating agent

3.an oxidizing agent

4.as sulphonating agent


Question:
Which allotropic form of phosphorous is the most stable?

1.White

2.black

3.red

4.Violet


Question:
Which of the elements show passivity when treated with conc. HNO3.

1.Fe

2.A?

3.Cr

4.All of the above


Question:
Which of the following can be used as anti-knocking agent.

1.PbCl2

2.(C2H5)4 Pb

3.(C2H5)2 Pb

4.all of the above


Question:
Which of the following is an amide

1.R-NH2

2.RCONH2

3.R - NH - R

4.C6H5NH2


Question:
Which one of the following compounds shows intense knocking?

1.n-pentane

2.iso-heptane

3.iso-octane

4.n-heptane


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