carbon and its compound
(Q.1) The allotropic form, which has maximum number
of carbon atoms is
(A) decane.
(B) diamond.
(C) fullerenes.
(D) graphite.
(Q.2) Cleansing action of soaps is based on the principle that
(A) Soap reacts with the dust
(B) The ionic end of the soap dissolves in water while the carbon chain bonds with oil or dirt.
(C) The soap molecules attracts dirt.
(D) Soap combines with the dirt.
(Q.3) Saponification is
(A) Is dehydration of the ester
(B) Is the hydrolysis of the ester
(C) Is the hydration of the ester
(D) Is the formation of ester
(Q.4) Ethanol gets oxidized to
(A) Ethanal with alkaline KMnO4.
(B) Ethanoic acid by alkaline KMnO4
(C) Ethanal in presence of cuperic oxide.
(D) Ethanoic acid in presence of platinum catalyst.
(Q.5) Esterification is the name given to
(A) Reaction of an alcohol with a carboxylic acid in presence of Sulphuric acid
(B) Formation of a new substance.
(C) A type of addition reaction.
(D) A type of rearrangement reaction.
(Q.6) Ethanol is a highly inflammable liquid implies that it is highly combustible:
(A) Ethanol catches fire at high temperatures.
(B) Ethanol burns with a yellow sooty flame
(C) The products obtained after combustion are Carbon dioxide and water.
(D) The products of combustion is an organic acid and water.
(Q.7) Substitution reactions are those reactions in which
(A) saturated hydrocarbons replace the cations of an inorganic compound.
(B) one type of atoms or a group of atoms takes the place of another.
(C) alkyl group replaces the anion of an inorganic compound.
(D) are shown by unsaturated hydrocarbons.
(Q.8) Addition Reactions are those reactions in which
(A) the reaction takes place immediately on mixing the reactants.
(B) unsaturated hydrocarbons add hydrogen in presence of a catalyst.
(C) hydrogen atom is replaced by a group of atoms containing more than one atom.
(D) two molecules of the same hydrocarbon form a larger molecule.
(Q.9) Alcohols are compounds
(A) containing – OH group attached to alkyl group.
(B) containing – CO- group attached to alkyl groups.
(C) containing – CHO group attached to alkyl group.
(D) containing – COOH group attached to alkyl group.
(Q.10) Most carbon allotropes and carbon compounds on complete combustion
(A) give a foul smell..
(B) produce a dark mass.
(C) release heat and light in addition to liberating CO2.
(D) release heat and light in addition to liberating O2.
(Q.11) The two consecutie members of a homologous series differ by
(A) CH group.
(B) 14 u.
(C) functional group.
(D) CH3 group.
(Q.12) Covalent compounds are / have generally
(A) poor conductors of electricity.
(B) less strong bonds.
(C) high intermolecular forces.
(D) high melting and boiling points.
(Q.13) Homologous series is a series of compounds in which
(A) The same functional group substitutes for hydrogen in a carbon chain.
(B) Formulae of successive compounds differ by a –CH3 – unit.
(C) Representation is possible by a any formula.
(D) Is collection of compounds with different functional groups.
(Q.14) Functional group in an organic compound
(A) is an atom or group of atoms bonded to carbon in a unique manner.
(B) Present in the compound
(C) Present in the container
(D) Makes no difference to the compound.
(Q.15) Chemical properties of an organic compound (carbon compound) depend on-
(A) The functional group
(B) Constituent elements
(C) Number of hydrogen atoms
(D) Number of carbon atoms
(Q.16) Occurrence of organic compounds having same molecular formula but different structures is called
(A) Catenation
(B) Allotropy
(C) Isomerism
(D) Isoes
(Q.17) Saturated carbon compounds
(A) have the carbon atoms linked together with a single covalent bond.
(B) are normally not very reactive.
(C) are also called alkenes.
(D) Are not very useful.
(Q.18) The unique ability of a carbon atom to form bonds with other atoms of carbon is called-
(A) Catenation
(B) Allotropy
(C) Isomerism
(D) Isoes
(Q.19) Graphite is smooth & slippery and a good conductor of electricity because
(A) Each carbon atom is bonded to three other carbon atoms.
(B) One of the bonds connecting the Carbon atoms is a double bond.
(C) Bonds are strong.
(D) Carbon atom is sp hybridised.
(Q.20) Diamond is the hardest substance because-
(A) It has a rigid three-dimensional structure.
(B) It has no free electrons.
(C) It has hexagonal layers of carbon rings over each other.
(D) It has a two-dimensional structure.
(Q.21) Occurrence of carbon in different forms is termed as-
(A) Catenation
(B) Allotropy
(C) Isomerism
(D) Isoes
(Q.22) A covalent compound :
(A) Have definite geometry.
(B) Have strong bond.
(C) Are poor conductors of electricity and have low melting and boiling points.
(D) Are electrolytes.
(Q.23) Carbon completes its octet by-
(A) Donating the four electrons
(B) Accepting four electrons
(C) Sharing the four electrons
(D) Forming ions
(Q.24) Spherical aggregate of soap molecules in the soap solution is called
(A) a micelle.
(B) an ester.
(C) a molasses.
(D) a vinegar.
(Q.25) The organic compound, which are non-biodegradable in nature is
(A) detergents.
(B) soaps.
(C) esters.
(D) alcohols.
(Q.26) When a sodium piece is added to acetic acid solution, a gas is evolved. The gas is
(A) CH4.
(B) CO2.
(C) H2.
(D) O2.
(Q.27) The compound which turns blue litmus red is
(A) CH3COOH.
(B) NaOH.
(C) NaHCO3.
(D) CH3NH2.
(Q.28) When NaHCO3 reacts with acetic acid, a gas evolves. This gas turns
(A) lime water milky.
(B) pure water milky.
(C) zinc sulphate solution green.
(D) acidified K2Cr2O7 solution green.
(Q.29) Esterification is the name given to
(A) reaction of an alcohol with a carboxylic acid in the presence of sulphuric acid.
(B) formation of a new substance.
(C) a type of addition reaction.
(D) a type of rearrangement reaction.
(Q.30) The allotropic form of carbon, which is used as a lubricant is
(A) graphite.
(B) diamond.
(C) charcoal.
(D) coal.
(Q.31) Consumption of large quantities of ethanol
(A) tends to increase metabolic processes.
(B) depresses the Central Nervous System.
(C) causes alertness.
(D) is good for normal functioning of body.
(Q.32) The covalent bonds formed between two nitrogen atoms in a nitrogen molecule are / is
(A) 1.
(B) 2.
(C) 3.
(D) 4.
(Q.33) The double and single bonds present between carbon atoms in benzene are
(A) 3 and 3.
(B) 1and 2.
(C) 2 and 4.
(D) 4 and 2.
(Q.34) Acid required for dehydration of ethanol is:
(A) Nitric acid
(B) Concentrated sulphuric acid
(C) Hydrochloric acid
(D) Dilute sulphuric acid
(Q.35) Ethanoic acid reacts with Sodium Hydroxide to form
(A) Carbon dioxide and water
(B) Sodium ethanoate
(C) Na2CO3 + CO2 + H2O
(D) Aldehyde and water.
(Q.36) Cough syrups and many tonics contain
(A) formaldehyde.
(B) etanol.
(C) propionaldehyde.
(D) acetone.
(Q.37) The number of covalent bonds in ethane are
(A) 7.
(B) 6.
(C) 5.
(D) 4.
(Q.38) The IUPAC name of the given compound is
(A) propane.
(B) Prop-1-ene.
(C) Prop-2-ene.
(D) null
(Q.39) Two or more forms of an element, having same chemical properties but different physical states is known as
(A) isoes.
(B) isomers.
(C) isotones.
(D) allotropes.
(Q.40) The salt used in the preparation of soap like sodium stearate is
(A) magnesium chloride.
(B) zinc sulphate.
(C) sodium chloride.
(D) potassium chloride.
(Q.41) The process of conversion of the wood into coal is known as
(A) isomerisation.
(B) carbonization.
(C) polymerization.
(D) combustion.
(Q.42) The addition of hydrogen to vegetable oils to obtain vegetable ghee (vanaspati ghee) is known as
(A) halogenation.
(B) hydrogenation.
(C) combustion.
(D) esterification.
(Q.43) The reactive part of hydrocarbon compound is known as
(A) isomers.
(B) homologous series.
(C) functional group.
(D) allotropes.
(Q.44) The burning of hydrocarbons in the presence of air is known as
(A) respiration.
(B) oxidation.
(C) reduction.
(D) combustion.
(Q.45) The reaction of chlorine with methane in the presence of sunlight is classified as
(A) addition reaction.
(B) substitution reaction.
(C) isomerisation reaction.
(D) displacement reaction.
(Q.46) The sodium salt of a long chain carboxylic acid possessing cleansing property, is
(A) an ester.
(B) a detergent.
(C) a soap.
(D) an aldehyde.
(Q.47) The mixture of gas used for welding purposes is
(A) ethyne and air.
(B) ethane and air.
(C) ethyne and oxygen.
(D) ethene and oxygen.
(Q.48) If the bottom of the vessel is getting blackened on the outside while cooking, then it means that
(A) the fuel is not burning completely.
(B) the fuel is burning completely.
(C) the food is not cooking completely.
(D) the fuel is wet.
(Q.49) Combustion of fuels in a sufficient supply of oxygen produces
(A) yellow flame.
(B) blue flame.
(C) orange flame.
(D) red flame.
(Q.50) The slow decomposition of large organic molecules by enzymes is known as
(A) esterification.
(B) fermentation.
(C) denaturation.
(D) saponification.
(Q.51) A hydrocarbon in which the carbon atoms are connected by single bonds only is called
(A) unsaturated.
(B) saturated.
(C) benzenoid.
(D) non-benzenoid.
(Q.52) A compound made up of hydrogen and carbon is known as
(A) hydrocarbon.
(B) inorganic compound.
(C) allotrope.
(D) isomer.
(Q.53) The IUPAC name of the compound is
(A) Butanol.
(B) Butanone.
(C) Butanoic acid.
(D) Butanal.
(Q.54) The total number of structural isomers possible for the hydrocarbon pentane (C5H12) is
(A) 2.
(B) 3.
(C) 4.
(D) 5.
(Q.55) A molecule of ethane (C2H6) contains
(A) 4 covalent bonds.
(B) 5 Covalent bonds.
(C) 6 Covalent bonds.
(D) 7 Covalent bonds.
(Q.56) The reaction of acetic acid with NaHCO3 results in the evolution of
(A) Carbon monoxide.
(B) Hydrogen.
(C) Carbon dioxide.
(D) Methane.
(Q.57) The substance which is added to ethanol (used in industry for manufacturing various products) to make it unfit for drinking is
(A) Vinegar.
(B) sodium chloride.
(C) Methanol.
(D) Ester.
(Q.58) A group of organic compounds having similar structures and similar chemical properties in which the successive members differ by CH2 group, is known as
(A) homologous series.
(B) reactivity series.
(C) analogous series.
(D) Isomers.
(Q.59) The IUPAC name of the compound is
(A) 1-Propanol.
(B) 2- Pentanol.
(C) Butan-2-ol.
(D) Propan-2-ol.
(Q.60) The hydrocarbons having the general formula of CnH2n-2 are known as
(A) alkanes.
(B) Alkenes.
(C) Alkynes.
(D) Cycloalkanes.
(Q.61) The gas released on dropping a small piece of sodium metal into ethanol, is
(A) Oxygen.
(B) Hydrogen.
(C) Nitrogen.
(D) Carbon Dioxide.
(Q.62) The substance obtained by the dehydration of ethanol in the presence of concentrated sulphuric acid is
(A) ethanoic acid.
(B) Ethanal.
(C) Ester.
(D) Ethene.
(Q.64) Alkynes are represented by the general formula
(A) CnH2n.
(B) CnH2n+2.
(C) CnH2n-2.
(D) CnH2n-1.
(Q.65) When ethanol is heated with alkaline potassium permanganate solution, it gets oxidized to
(A) methanoic acid.
(B) ethanoic acid.
(C) Methanol.
(D) Propanone.
(Q.66) The statement valid for the members of homologous series is that
(A) the molecular mass of the successive members differ by 16 amu.
(B) the successive members of the series differ by –CH2 group.
(C) they have similar physical properties.
(D) they have dissimilar chemical properties.
(Q.67) The detergents are sodium or potassium salts of long chain of
(A) alcohols
(B) ketones.
(C) carboxylic acids
(D) sulphonic acids.
(Q.68) The next higher homologue of ethane is
(A) Methane.
(B) Propane.
(C) Butane.
(D) pentane.
(Q.69) The general formula CnH2n for cycloalkane is the same as that of
(A) cycloalkene.
(B) Cycloalkyne.
(C) Alkyne.
(D) Alkene.
(Q.70) The reaction of a carboxylic acid with an alcohol to form an ester is called
(A) Saponification.
(B) Esterification.
(C) Hydrogenation.
(D) Polymerization.
(Q.71) The conversion of ethanol into ethanoic acid is
(A) a displacement reaction.
(B) a reduction reaction.
(C) an oxidation reaction.
(D) a decomposition reaction.
(Q.72) The IUPAC name of is
(A) Propanone.
(B) Pentanone.
(C) Butanone.
(D) Hexanone.
(Q.73) The molecular formula of benzene is
(A) C6H6.
(B) C6H10.
(C) C6H12.
(D) C6H14.
(Q.74) The alcohol obtained from the molasses is
(A) Methanol.
(B) Ethanol.
(C) Propanol.
(D) Butanol.
(Q.75) The removal of carboxyl group from salt of carboxylic acid is known as
(A) Esterification.
(B) Decarboxylation.
(C) Hydrogenation.
(D) Nitration.
(Q.76) The mixture used in car radiators in cold countries contains
(A) alcohol and benzene.
(B) sodium chloride and water.
(C) alcohol and water.
(D) sodium chloride and alcohol.
(Q.77) The IUPAC name of given compound is
(A) chloro butane.
(B) 2-chloro butane.
(C) Propane.
(D) 2-chloro Propane.
(Q.78) The compound which can turn blue litmus solution into red is
(A) CH3CH2OH.
(B) CH3CHO.
(C) CH3COCH3.
(D) CH3COOH.
(Q.79) The organic compounds having the same molecular formula but different structures are known as
(A) isobars.
(B) isomers.
(C) allotropes.
(D) isoes.
(Q.80) The hardest natural substance made up of carbon is
(A) coal.
(B) coke.
(C) graphite.
(D) diamond.
(Q.81) The property of self-combination of carbon atoms to form long chains is known as
(A) allotropy.
(B) isomerism.
(C) catenation.
(D) tetravalence.
(Q.82) Acetic acid turns blue litmus solution into
(A) blue.
(B) green.
(C) red .
(D) colorless.
(Q.83) The organic acid present in vinegar is
(A) methanoic acid.
(B) ethanoic acid.
(C) propanoic acid.
(D) butanoic acid.
(Q.84) Hard water gives lather with
(A) sodium stearate.
(B) potassium stearate.
(C) sodium-dodecyl sulphate.
(D) sodium palmitate.
(Q.85) Saponification is
(A) dehydration of the ester.
(B) the hydrolysis of the ester.
(C) the hydration of the ester.
(D) the formation of ester.
(Q.86) Occurrence of organic compounds having same molecular formula but different structures is called
(A) catenation.
(B) allotropy.
(C) isomerism.
(D) isoes.
(Q.87) Saturated carbon compounds
(A) have the carbon atoms linked together with a single covalent bond.
(B) are normally not very reactive.
(C) are also called alkenes.
(D) are not very useful.
(Q.88) Occurrence of carbon in different forms is termed as
(A) catenation.
(B) allotropy.
(C) isomerism.
(D) isoes.
(Q.89) A covalent compound
(A) have definite geometry.
(B) have strong bond.
(C) are poor conductors of electricity and have low melting and boiling points.
(D) are electrolytes.
(Q.90) Graphite is smooth & slippery and a good conductor of electricity because
(A) each carbon atom is bonded to three other carbon atoms.
(B) one of the bonds connecting the carbon atoms is a double bond.
(C) bonds are strong.
(D) carbon atom is sp hybridised.
(Q.91) The major component of biogas is
(A) methane.
(B) carbon.
(C) hydrogen atom.
(D) sulphur.
(Q.92) Functional group in an organic compound
(A) is an atom or group of atoms bonded to carbon in a unique manner.
(B) ia always at the terminals.
(C) always stays away when the reaction takes place.
(D) makes no difference to the compound.
(Q.93) As the molecular mass increase in any homologous series, a gradation in
(A) chemical properties is seen.
(B) physical properties is seen.
(C) functional group is seen.
(D) chain length is seen.
(Q.94) Alcohols are compounds containing
(A) - OH group attached to carbon atom.
(B) - CO- group attached to carbon atom.
(C) - CHO group attached to carbon atom.
(D) - COOH group attached to carbon atom.
(Q.95) Most carbon allotropes and carbon compounds on complete combustion
(A) give a foul smell.
(B) produce a dark mass.
(C) release heat and light in addition to carbondioxide.
(D) produce oxygen which is useful.
(Q.96) The substance that influence the rate of the reaction is
(A) reactants.
(B) catalyst.
(C) products.
(D) functional group.
(Q.97) Substitution reactions are those reactions in which
(A) saturated hydrocarbons replace the cations of an inorganic compound.
(B) one type of atoms or a group of atoms takes the place of another.
(C) alkyl group replaces the anion of an inorganic compound.
(D) alkyl group replaces the cation of an inorganic compound.
(Q.98) In esterification reaction, concentrated sulphuric acid acts as a
(A) dehydrating agent.
(B) hydrating agent.
(C) reducing agent.
(D) hydrolysing agent.
(Q.99) Micelles have
(A) hydrophilic tails in the interior.
(B) hydrophobic tails in the interior.
(C) hydrophobic tails in the outer surface.
(D) a semicircle shape.
(Q.100) The chemical that is used as an additive to petrol is
(A) ethanal.
(B) ethanol.
(C) ethane.
(D) ethanoic acid.
(A) decane.
(B) diamond.
(C) fullerenes.
(D) graphite.
(Q.2) Cleansing action of soaps is based on the principle that
(A) Soap reacts with the dust
(B) The ionic end of the soap dissolves in water while the carbon chain bonds with oil or dirt.
(C) The soap molecules attracts dirt.
(D) Soap combines with the dirt.
(Q.3) Saponification is
(A) Is dehydration of the ester
(B) Is the hydrolysis of the ester
(C) Is the hydration of the ester
(D) Is the formation of ester
(Q.4) Ethanol gets oxidized to
(A) Ethanal with alkaline KMnO4.
(B) Ethanoic acid by alkaline KMnO4
(C) Ethanal in presence of cuperic oxide.
(D) Ethanoic acid in presence of platinum catalyst.
(Q.5) Esterification is the name given to
(A) Reaction of an alcohol with a carboxylic acid in presence of Sulphuric acid
(B) Formation of a new substance.
(C) A type of addition reaction.
(D) A type of rearrangement reaction.
(Q.6) Ethanol is a highly inflammable liquid implies that it is highly combustible:
(A) Ethanol catches fire at high temperatures.
(B) Ethanol burns with a yellow sooty flame
(C) The products obtained after combustion are Carbon dioxide and water.
(D) The products of combustion is an organic acid and water.
(Q.7) Substitution reactions are those reactions in which
(A) saturated hydrocarbons replace the cations of an inorganic compound.
(B) one type of atoms or a group of atoms takes the place of another.
(C) alkyl group replaces the anion of an inorganic compound.
(D) are shown by unsaturated hydrocarbons.
(Q.8) Addition Reactions are those reactions in which
(A) the reaction takes place immediately on mixing the reactants.
(B) unsaturated hydrocarbons add hydrogen in presence of a catalyst.
(C) hydrogen atom is replaced by a group of atoms containing more than one atom.
(D) two molecules of the same hydrocarbon form a larger molecule.
(Q.9) Alcohols are compounds
(A) containing – OH group attached to alkyl group.
(B) containing – CO- group attached to alkyl groups.
(C) containing – CHO group attached to alkyl group.
(D) containing – COOH group attached to alkyl group.
(Q.10) Most carbon allotropes and carbon compounds on complete combustion
(A) give a foul smell..
(B) produce a dark mass.
(C) release heat and light in addition to liberating CO2.
(D) release heat and light in addition to liberating O2.
(Q.11) The two consecutie members of a homologous series differ by
(A) CH group.
(B) 14 u.
(C) functional group.
(D) CH3 group.
(Q.12) Covalent compounds are / have generally
(A) poor conductors of electricity.
(B) less strong bonds.
(C) high intermolecular forces.
(D) high melting and boiling points.
(Q.13) Homologous series is a series of compounds in which
(A) The same functional group substitutes for hydrogen in a carbon chain.
(B) Formulae of successive compounds differ by a –CH3 – unit.
(C) Representation is possible by a any formula.
(D) Is collection of compounds with different functional groups.
(Q.14) Functional group in an organic compound
(A) is an atom or group of atoms bonded to carbon in a unique manner.
(B) Present in the compound
(C) Present in the container
(D) Makes no difference to the compound.
(Q.15) Chemical properties of an organic compound (carbon compound) depend on-
(A) The functional group
(B) Constituent elements
(C) Number of hydrogen atoms
(D) Number of carbon atoms
(Q.16) Occurrence of organic compounds having same molecular formula but different structures is called
(A) Catenation
(B) Allotropy
(C) Isomerism
(D) Isoes
(Q.17) Saturated carbon compounds
(A) have the carbon atoms linked together with a single covalent bond.
(B) are normally not very reactive.
(C) are also called alkenes.
(D) Are not very useful.
(Q.18) The unique ability of a carbon atom to form bonds with other atoms of carbon is called-
(A) Catenation
(B) Allotropy
(C) Isomerism
(D) Isoes
(Q.19) Graphite is smooth & slippery and a good conductor of electricity because
(A) Each carbon atom is bonded to three other carbon atoms.
(B) One of the bonds connecting the Carbon atoms is a double bond.
(C) Bonds are strong.
(D) Carbon atom is sp hybridised.
(Q.20) Diamond is the hardest substance because-
(A) It has a rigid three-dimensional structure.
(B) It has no free electrons.
(C) It has hexagonal layers of carbon rings over each other.
(D) It has a two-dimensional structure.
(Q.21) Occurrence of carbon in different forms is termed as-
(A) Catenation
(B) Allotropy
(C) Isomerism
(D) Isoes
(Q.22) A covalent compound :
(A) Have definite geometry.
(B) Have strong bond.
(C) Are poor conductors of electricity and have low melting and boiling points.
(D) Are electrolytes.
(Q.23) Carbon completes its octet by-
(A) Donating the four electrons
(B) Accepting four electrons
(C) Sharing the four electrons
(D) Forming ions
(Q.24) Spherical aggregate of soap molecules in the soap solution is called
(A) a micelle.
(B) an ester.
(C) a molasses.
(D) a vinegar.
(Q.25) The organic compound, which are non-biodegradable in nature is
(A) detergents.
(B) soaps.
(C) esters.
(D) alcohols.
(Q.26) When a sodium piece is added to acetic acid solution, a gas is evolved. The gas is
(A) CH4.
(B) CO2.
(C) H2.
(D) O2.
(Q.27) The compound which turns blue litmus red is
(A) CH3COOH.
(B) NaOH.
(C) NaHCO3.
(D) CH3NH2.
(Q.28) When NaHCO3 reacts with acetic acid, a gas evolves. This gas turns
(A) lime water milky.
(B) pure water milky.
(C) zinc sulphate solution green.
(D) acidified K2Cr2O7 solution green.
(Q.29) Esterification is the name given to
(A) reaction of an alcohol with a carboxylic acid in the presence of sulphuric acid.
(B) formation of a new substance.
(C) a type of addition reaction.
(D) a type of rearrangement reaction.
(Q.30) The allotropic form of carbon, which is used as a lubricant is
(A) graphite.
(B) diamond.
(C) charcoal.
(D) coal.
(Q.31) Consumption of large quantities of ethanol
(A) tends to increase metabolic processes.
(B) depresses the Central Nervous System.
(C) causes alertness.
(D) is good for normal functioning of body.
(Q.32) The covalent bonds formed between two nitrogen atoms in a nitrogen molecule are / is
(A) 1.
(B) 2.
(C) 3.
(D) 4.
(Q.33) The double and single bonds present between carbon atoms in benzene are
(A) 3 and 3.
(B) 1and 2.
(C) 2 and 4.
(D) 4 and 2.
(Q.34) Acid required for dehydration of ethanol is:
(A) Nitric acid
(B) Concentrated sulphuric acid
(C) Hydrochloric acid
(D) Dilute sulphuric acid
(Q.35) Ethanoic acid reacts with Sodium Hydroxide to form
(A) Carbon dioxide and water
(B) Sodium ethanoate
(C) Na2CO3 + CO2 + H2O
(D) Aldehyde and water.
(Q.36) Cough syrups and many tonics contain
(A) formaldehyde.
(B) etanol.
(C) propionaldehyde.
(D) acetone.
(Q.37) The number of covalent bonds in ethane are
(A) 7.
(B) 6.
(C) 5.
(D) 4.
(Q.38) The IUPAC name of the given compound is
(A) propane.
(B) Prop-1-ene.
(C) Prop-2-ene.
(D) null
(Q.39) Two or more forms of an element, having same chemical properties but different physical states is known as
(A) isoes.
(B) isomers.
(C) isotones.
(D) allotropes.
(Q.40) The salt used in the preparation of soap like sodium stearate is
(A) magnesium chloride.
(B) zinc sulphate.
(C) sodium chloride.
(D) potassium chloride.
(Q.41) The process of conversion of the wood into coal is known as
(A) isomerisation.
(B) carbonization.
(C) polymerization.
(D) combustion.
(Q.42) The addition of hydrogen to vegetable oils to obtain vegetable ghee (vanaspati ghee) is known as
(A) halogenation.
(B) hydrogenation.
(C) combustion.
(D) esterification.
(Q.43) The reactive part of hydrocarbon compound is known as
(A) isomers.
(B) homologous series.
(C) functional group.
(D) allotropes.
(Q.44) The burning of hydrocarbons in the presence of air is known as
(A) respiration.
(B) oxidation.
(C) reduction.
(D) combustion.
(Q.45) The reaction of chlorine with methane in the presence of sunlight is classified as
(A) addition reaction.
(B) substitution reaction.
(C) isomerisation reaction.
(D) displacement reaction.
(Q.46) The sodium salt of a long chain carboxylic acid possessing cleansing property, is
(A) an ester.
(B) a detergent.
(C) a soap.
(D) an aldehyde.
(Q.47) The mixture of gas used for welding purposes is
(A) ethyne and air.
(B) ethane and air.
(C) ethyne and oxygen.
(D) ethene and oxygen.
(Q.48) If the bottom of the vessel is getting blackened on the outside while cooking, then it means that
(A) the fuel is not burning completely.
(B) the fuel is burning completely.
(C) the food is not cooking completely.
(D) the fuel is wet.
(Q.49) Combustion of fuels in a sufficient supply of oxygen produces
(A) yellow flame.
(B) blue flame.
(C) orange flame.
(D) red flame.
(Q.50) The slow decomposition of large organic molecules by enzymes is known as
(A) esterification.
(B) fermentation.
(C) denaturation.
(D) saponification.
(Q.51) A hydrocarbon in which the carbon atoms are connected by single bonds only is called
(A) unsaturated.
(B) saturated.
(C) benzenoid.
(D) non-benzenoid.
(Q.52) A compound made up of hydrogen and carbon is known as
(A) hydrocarbon.
(B) inorganic compound.
(C) allotrope.
(D) isomer.
(Q.53) The IUPAC name of the compound is
(A) Butanol.
(B) Butanone.
(C) Butanoic acid.
(D) Butanal.
(Q.54) The total number of structural isomers possible for the hydrocarbon pentane (C5H12) is
(A) 2.
(B) 3.
(C) 4.
(D) 5.
(Q.55) A molecule of ethane (C2H6) contains
(A) 4 covalent bonds.
(B) 5 Covalent bonds.
(C) 6 Covalent bonds.
(D) 7 Covalent bonds.
(Q.56) The reaction of acetic acid with NaHCO3 results in the evolution of
(A) Carbon monoxide.
(B) Hydrogen.
(C) Carbon dioxide.
(D) Methane.
(Q.57) The substance which is added to ethanol (used in industry for manufacturing various products) to make it unfit for drinking is
(A) Vinegar.
(B) sodium chloride.
(C) Methanol.
(D) Ester.
(Q.58) A group of organic compounds having similar structures and similar chemical properties in which the successive members differ by CH2 group, is known as
(A) homologous series.
(B) reactivity series.
(C) analogous series.
(D) Isomers.
(Q.59) The IUPAC name of the compound is
(A) 1-Propanol.
(B) 2- Pentanol.
(C) Butan-2-ol.
(D) Propan-2-ol.
(Q.60) The hydrocarbons having the general formula of CnH2n-2 are known as
(A) alkanes.
(B) Alkenes.
(C) Alkynes.
(D) Cycloalkanes.
(Q.61) The gas released on dropping a small piece of sodium metal into ethanol, is
(A) Oxygen.
(B) Hydrogen.
(C) Nitrogen.
(D) Carbon Dioxide.
(Q.62) The substance obtained by the dehydration of ethanol in the presence of concentrated sulphuric acid is
(A) ethanoic acid.
(B) Ethanal.
(C) Ester.
(D) Ethene.
(Q.64) Alkynes are represented by the general formula
(A) CnH2n.
(B) CnH2n+2.
(C) CnH2n-2.
(D) CnH2n-1.
(Q.65) When ethanol is heated with alkaline potassium permanganate solution, it gets oxidized to
(A) methanoic acid.
(B) ethanoic acid.
(C) Methanol.
(D) Propanone.
(Q.66) The statement valid for the members of homologous series is that
(A) the molecular mass of the successive members differ by 16 amu.
(B) the successive members of the series differ by –CH2 group.
(C) they have similar physical properties.
(D) they have dissimilar chemical properties.
(Q.67) The detergents are sodium or potassium salts of long chain of
(A) alcohols
(B) ketones.
(C) carboxylic acids
(D) sulphonic acids.
(Q.68) The next higher homologue of ethane is
(A) Methane.
(B) Propane.
(C) Butane.
(D) pentane.
(Q.69) The general formula CnH2n for cycloalkane is the same as that of
(A) cycloalkene.
(B) Cycloalkyne.
(C) Alkyne.
(D) Alkene.
(Q.70) The reaction of a carboxylic acid with an alcohol to form an ester is called
(A) Saponification.
(B) Esterification.
(C) Hydrogenation.
(D) Polymerization.
(Q.71) The conversion of ethanol into ethanoic acid is
(A) a displacement reaction.
(B) a reduction reaction.
(C) an oxidation reaction.
(D) a decomposition reaction.
(Q.72) The IUPAC name of is
(A) Propanone.
(B) Pentanone.
(C) Butanone.
(D) Hexanone.
(Q.73) The molecular formula of benzene is
(A) C6H6.
(B) C6H10.
(C) C6H12.
(D) C6H14.
(Q.74) The alcohol obtained from the molasses is
(A) Methanol.
(B) Ethanol.
(C) Propanol.
(D) Butanol.
(Q.75) The removal of carboxyl group from salt of carboxylic acid is known as
(A) Esterification.
(B) Decarboxylation.
(C) Hydrogenation.
(D) Nitration.
(Q.76) The mixture used in car radiators in cold countries contains
(A) alcohol and benzene.
(B) sodium chloride and water.
(C) alcohol and water.
(D) sodium chloride and alcohol.
(Q.77) The IUPAC name of given compound is
(A) chloro butane.
(B) 2-chloro butane.
(C) Propane.
(D) 2-chloro Propane.
(Q.78) The compound which can turn blue litmus solution into red is
(A) CH3CH2OH.
(B) CH3CHO.
(C) CH3COCH3.
(D) CH3COOH.
(Q.79) The organic compounds having the same molecular formula but different structures are known as
(A) isobars.
(B) isomers.
(C) allotropes.
(D) isoes.
(Q.80) The hardest natural substance made up of carbon is
(A) coal.
(B) coke.
(C) graphite.
(D) diamond.
(Q.81) The property of self-combination of carbon atoms to form long chains is known as
(A) allotropy.
(B) isomerism.
(C) catenation.
(D) tetravalence.
(Q.82) Acetic acid turns blue litmus solution into
(A) blue.
(B) green.
(C) red .
(D) colorless.
(Q.83) The organic acid present in vinegar is
(A) methanoic acid.
(B) ethanoic acid.
(C) propanoic acid.
(D) butanoic acid.
(Q.84) Hard water gives lather with
(A) sodium stearate.
(B) potassium stearate.
(C) sodium-dodecyl sulphate.
(D) sodium palmitate.
(Q.85) Saponification is
(A) dehydration of the ester.
(B) the hydrolysis of the ester.
(C) the hydration of the ester.
(D) the formation of ester.
(Q.86) Occurrence of organic compounds having same molecular formula but different structures is called
(A) catenation.
(B) allotropy.
(C) isomerism.
(D) isoes.
(Q.87) Saturated carbon compounds
(A) have the carbon atoms linked together with a single covalent bond.
(B) are normally not very reactive.
(C) are also called alkenes.
(D) are not very useful.
(Q.88) Occurrence of carbon in different forms is termed as
(A) catenation.
(B) allotropy.
(C) isomerism.
(D) isoes.
(Q.89) A covalent compound
(A) have definite geometry.
(B) have strong bond.
(C) are poor conductors of electricity and have low melting and boiling points.
(D) are electrolytes.
(Q.90) Graphite is smooth & slippery and a good conductor of electricity because
(A) each carbon atom is bonded to three other carbon atoms.
(B) one of the bonds connecting the carbon atoms is a double bond.
(C) bonds are strong.
(D) carbon atom is sp hybridised.
(Q.91) The major component of biogas is
(A) methane.
(B) carbon.
(C) hydrogen atom.
(D) sulphur.
(Q.92) Functional group in an organic compound
(A) is an atom or group of atoms bonded to carbon in a unique manner.
(B) ia always at the terminals.
(C) always stays away when the reaction takes place.
(D) makes no difference to the compound.
(Q.93) As the molecular mass increase in any homologous series, a gradation in
(A) chemical properties is seen.
(B) physical properties is seen.
(C) functional group is seen.
(D) chain length is seen.
(Q.94) Alcohols are compounds containing
(A) - OH group attached to carbon atom.
(B) - CO- group attached to carbon atom.
(C) - CHO group attached to carbon atom.
(D) - COOH group attached to carbon atom.
(Q.95) Most carbon allotropes and carbon compounds on complete combustion
(A) give a foul smell.
(B) produce a dark mass.
(C) release heat and light in addition to carbondioxide.
(D) produce oxygen which is useful.
(Q.96) The substance that influence the rate of the reaction is
(A) reactants.
(B) catalyst.
(C) products.
(D) functional group.
(Q.97) Substitution reactions are those reactions in which
(A) saturated hydrocarbons replace the cations of an inorganic compound.
(B) one type of atoms or a group of atoms takes the place of another.
(C) alkyl group replaces the anion of an inorganic compound.
(D) alkyl group replaces the cation of an inorganic compound.
(Q.98) In esterification reaction, concentrated sulphuric acid acts as a
(A) dehydrating agent.
(B) hydrating agent.
(C) reducing agent.
(D) hydrolysing agent.
(Q.99) Micelles have
(A) hydrophilic tails in the interior.
(B) hydrophobic tails in the interior.
(C) hydrophobic tails in the outer surface.
(D) a semicircle shape.
(Q.100) The chemical that is used as an additive to petrol is
(A) ethanal.
(B) ethanol.
(C) ethane.
(D) ethanoic acid.
