2-propanol and 1-propanol show the isomerism
1.metamerism
2.functional group isomerism
3.geometric isomerism
4.position isomerism
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
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
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
All the elements in group VIA are _______ in nature.
1.hygroscopic
2.metals
3.polymeric
4.all of above
Arsenic oxides are removed by passing through
1.Ferric hydroxide
2.Sodium hydroxide
3.Calcium hydroxide
4.Aluminium hydroxide
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
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
Coal is produced after a long time decay of
1.animals
2.fossils
3.wood
4.all of the above
Compound containing benzene ring in their structure are
1.aliphatic
2.aromatic
3.carboxylic acid
4.carbohydrates
Compounds having same molecular formula but differ in structural formula are called
1.polymer
2.monomer
3.isomer
4.allotropes
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
Ether functional group can be represented as
1.?OH
2.R-CO-R
3.R-O-R
4.R-COOH
FeSO4 forms brown ring with
1.N2O3
2.NO2
3.NO
4.N2O
First organic compound synthesized in laboratory was
1.tartaric acid
2.ethyl alcohol
3.methanol
4.urea
Geometric isomerism is usually found in
1.Alkanes
2.Alkenes
3.Alkynes
4.Esters
Hydro carbons which burn with smoky flame are called
1.Aliphatic
2.Alicyclic
3.Aromatic
4.Aldehyde
In cyano group the carbon atom shows which kind of hybridization
1.sp2
2.sp
3.sp3
4.none of the above
In sp3 hybridization the expected geometry of molecules will be
1.square planar
2.trigonal pyramidal
3.tetrahedral
4.linear
In which compound nitrogen has maximum oxidation state
1.N2O
2.NO2
3.HNO2
4.HNO3
Isomerism which is present only in alkene is
1.structural isomerism
2.metamerism
3.cis-trans isomerism
4.both b and c
Main source of organic compounds is
1.Animal
2.Fossil
3.Coal
4.Plants
Methane is used in power generation in chemical industries being a
1.natural gas
2.good caloric value
3.cheaper
4.All
Octane number 2 2 4-trimethyl pentane is
1.100
2.90
3.80
4.70
Octane number can be improved by
1.Isomerization
2.Adding (C2H5)4 Pb
3.Adding (CH3)4 Pb
4.All
Only sigma bonds are present in
1.propene
2.butanoic acid
3.butanal
4.ethoxy ethane
Organic compounds are soluble in
1.polar solvent
2.non-polar solvent
3.alkalies
4.water
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
Oxygen and sulphur resemble in all except
1.Electronic conviguration of valence shell electrons
2.Show allotropy
3.Polymeric
4.Show same oxidation state
Oxygen does not react with all except
1.Alkali
2.Acid
3.Water
4.Metals
P2O5 is a hygroscopic powder which sublimes at
1.260?C
2.360?C
3.630?C
4.620?C
Pentane and 2-methyl butance have the same
1.Boiling point
2.Melting point
3.Percentage composition
4.Structural formula
Phosphoric acid is a weak acid and its basicity is
1.1
2.3
3.0
4.2
Propene can exhibit
1.cis-trans isomerism
2.geometric isomerism
3.both a & b
4.none of the above
Rate of reactions of most organic compounds are
1.very slow
2.very fast
3.slow
4.no regular character present
The chemical composition of cinnabar is
1.ZnS
2.PbS
3.HgS
4.FeS
The element of group VIA which is a non-metal is
1.S
2.Se
3.Te
4.Po
The first organic compound was synthesized in laboratory by
1.Wohler
2.Kolbe
3.Berzilius
4.Berthelot
The gas which cannot be dried by conc. H2SO4
1.SO2
2.H2S
3.CO2
4.C2H4
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
The organic compounds having very high molecular weight are called
1.carboxylic acids
2.ketones
3.aldehydes
4.polymers
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
The property of carbon chain formation is called
1.catenation
2.hybridization
3.polymerization
4.solvation
The structure of ethyne is
1.angular
2.trigonal
3.linear
4.trigonal planar
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
Which allotropic form of phosphorous is the most stable?
1.White
2.black
3.red
4.Violet
Which of the elements show passivity when treated with conc. HNO3.
1.Fe
2.A?
3.Cr
4.All of the above
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
Which of the following is an amide
1.R-NH2
2.RCONH2
3.R - NH - R
4.C6H5NH2
Which one of the following compounds shows intense knocking?
1.n-pentane
2.iso-heptane
3.iso-octane
4.n-heptane