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(1) Hydrocarbons containing only single bonds between the carbon atoms are called ..................

[A] Alkenes
[B] Alkynes
[C] Aromatics
[D] Alkanes
 

(2) Empirica formula expresses the actual number of mole of each elements in a molecule

[A] True
[B] False
[C] ---
[D] --
 

(3) An hydrocarbon with vapour density 28 contain 85.7 % carbon and 14.3 % hydrogen. deduce the empirical formula of the compound

[A] C2 H2
[B] C2 H
[C] C5 H2
[D] C2 H4
 

(4) The following are types of isomerism except

[A] Structural isomerism
[B] Geometric isomerism
[C] Optical isomerism
[D] Homologous isomerism
 

(5) The follow are characteristics of a homologous series except

[A] The member conform to general molecular formula  
[B]  There i a gradual change in the physical properties of the member as relative molecular mass increases
[C] The members are prepared by using different general methods 
[D] Saturated hydrocarbons contain only carbon- carbon single bonds 

(6) All cycloalkanes have........... general formula

[A] CH2
[B] Cn H2n + 2
[C] Cn H2n - 2
[D]Cn Hn
 

(7) All alkanes have........... general formula

[A] C2n H2n
[B] Cn Hn
[C] CnH2n+2
[D]Cn H2n - 2
 

(8) An organic compound contains 79 % of carbon and 21 % of hydrogen by mass. if 1 dm3 of the compound weighs 1.30g , find its empirical formula.

[A] CH5
[B]CH2
[C] CH
[D] CH3
 

(9) An organic compound contains 60 % of carbon, 13.3 % hydrogen and 26.7 % oxygen by mass. find its empirical formula.

[A] C3H8O
[B] C4 H7 O
[C] C2 H4 O
[D] C3 H8 O3
 

(10) An organic compound contains 50 % of carbon 20 % hydrogen and 30 % oxygen by mass. find its empirical formula.

[A] C2H10O
[B] C2 H3O
[C] C6 H10O
[D] C2 H9O
 

(11) An organic compound contains 69 of carbon and 31 % of hydrogen by mass. find its empirical formula.
 

[A] CH5
[B] C4 H5
[C] CH4CH5
[D] CH7
 

(12) An organic compound contains 40% of carbon, 21 % of hydrogen and 39 % by mass. find its empirical formula.

[A] CH9 O4
[B] CH9O
[C] CH4 O
[D]CH9O2
 

(13) An organic compound contains 30 % of carbon, 25 % hydrogen and 45 % oxygen by mass. find its empirical formula

[A] CH5O
[B] C3H10O
[C] CH10 O2
[D] CH10O
 

(14) Hydrocarbons containing only single bonds between the carbon atoms are called�

[A] Alkenes
[B] Aromatics
[C] Ketones
[D] Alkanes
 

(15) What general class of compounds is also known as olefins?

[A] Alkenes
[B] Aromatics
[C] Alkanes
[D] Alkynes
 

(16) Hydrocarbons containing carbon-carbon triple bonds are called

[A] Alkanes
[B] Aromatic hydrocarbons
[C] Alkynes
[D] Alkenes
 

(17) Alkynes always contain a

[A] carbon-carbon single bonds
[B] carbon-carbon double bonds
[C] carbon-carbon triple bonds
[D] carbon-carbon triple and double bonds
 

(18) Hybridization of the carbon-carbon double bonds is

[A] SP
[B] SP2
[C] SP3
[D] SP4
 

(19) The molecular geometry of each carbon atom in an alkane is

[A] Octahedral
[B] Trigonal pyramidal
[C] Square planar
[D] Tetrahedral
 

(20) The minimum number of carbons necessary for a hydrocarbon to form a branched structure is

[A] 1
[B] 2
[C] 3
[D] 4
 

(21) Cyclohexane has____fewer hydrogen than n-hexane

[A] 1
[B] 2
[C] 3
[D] 4
 

(22) How many structural isomers of butane exist?

[A] 1
[B] 2
[C] 3
[D] 4
 

(23) How many structural isomers of pentane exist?

[A] 1
[B] 2
[C] 3
[D] 4
 

(24) How many structural isomers of methane exist?

[A] 1
[B] 2
[C] 3
[D] 4
 

(25) How many structural isomers of propane exist?

[A] 1
[B] 2
[C] 3
[D] 4
 

(26) The general formula of an alkene is

[A] CnH2n
[B] C2n H2n
[C] Cn Hn
[D] Cn H2n + 2
 

(27)The general formula of cycloalkane is

[A] CnH2n
[B] CnHn
[C] C2n H2n 
[D] Cn H2n - 2
 

(28) The name of CH3-CH2CH2 =CH2 is

[A] But- 1- yne
[B] But- 1- ena
[C] But- 1- ene
[D] But- 2- ene
 

(29) How many structural isomers of hexane exist?

[A] 1
[B] 4
[C] 3
[D] 5
 

(30) The name of CH3-CH2=CH2-CH3 is

[A] 1- butene
[B] 1- butane
[C] 2- butene
[D] 3- butane
 

(31) The name of CH3-CH2=CH2-CH2-CH2-CH3 is

[A] Hex- 2 - ane
[B] Hexane- 2 - ene
[C] Hexyne- 2 - ene
[D] Hex- 2 - ene
 

(32) Cycloalkanes are alkanes that contain a ring of three or more

[A] True
[B] False
[C] Partialy True
[D] None of the above
 

(33)The IUPAC name of CH2=C=CH2 is

[A] Propa -1, 1- diene
[B] Propa -1, 2- diene
[C] Propa -1, 3- diene
[D] Propa -1, 4- diene
 

(34) The IUPAC name of CH2=CH-CH=CH-CH3

[A] 1, 1 - pentadiene
[B] 1, 2 - pentadiene
[C] 1, 3 - pentadiene
[D] 1, 4 - pentadiene
 

(35) The IUPAC name of CH3 -CH =C =CH -CH3 is

[A] 1, 1 - pentadiene
[B] 1, 3 - pentadiene
[C] 2, 1 - pentadiene
[D] 2, 3 - pentadiene
 

(36) The IUPAC name of CH3 -CH2-CH=CH

[A] But - 1- ene
[B] But - 2- ene
[C] But - 3- ene
[D] But - 4- ene
 

(37) The IUPAC name of CH2=CH-CH =CH=CH2

[A] Penta - 1, 4, 5 - triene
[B] Penta - 1, 2, 5 - triene
[C] Penta - 2, 4, 5 - triene
[D] Penta - 1, 3, 5 - triene
 

(38) The IUPAC name of CH2=C=C=CH2

[A] But -1, 2, 3- triene
[B] But -2, 2, 3- triene
[C] But -1, 5, 3- triene
[D] But -1, 2, 4- triene
 

(39) In naming an organic compound the longest continuous chain containing the fuctional group (double or trible bonds) is numbered in a direction that gives the functional group the lowest possible number.

[A] True
[B] False
[C] True but not always
[D] False but not always
 

(40) In naming of organic compounds a chain that has more than one substituents are not cited in alphabetical order.

[A] True
[B] False
[C]
[D]
 

(41) If counting in either direction results in thesame number for the alkane functional group, the correct name is the one containing the lowest substituent number.

[A] True
[B] False
[C]
[D]
 

(42) when ethyne is bubled in to bromine water in a test tube a colourless liquid results. The reaction which occured is......

[A] Addition reaction
[B] Substitution reaction
[C] Decompositoin reaction
[D] Hydrogenation reaction
 

(43) Three different hydrocarbons A, B, C were passed into three seperate test tube containing acidified KMnO4 . A and B decourized the acidified KMnO4 which C showed no visible reaction . A and B must be

[A] Unsaturated Hydrocarbon
[B] Saturated Hydrocarbon
[C] Akanes
[D] Cycloalkanes
 

(44) Alkynes have the general formula CH2n- 2 when hydrogenated with 2 moles of hydrogen, they produce compounds with general formula

[A] CnH2n
[B] Cn H2n -2
[C] Cn H2n + 2
[D] Cn H2n +1 option
 

(45) Alkenes and Alkynes react thesame with the following except

[A] Acidified KMnO4 solution
[B] Bromine water
[C] Ammonical AgNO3 solution
[D]
 

(46) C2H6 can not undergo

[A] substitution reaction
[B] Addition reaction
[C] Carbonization
[D] combustion
 

(47) Internal alkynes are alkynes with triple bonds located else where along the chain

[A] True
[B] False
[C]
[D]
 

(48)Terminal alkynes are alkynes with triple bonds located else where along the chain

[A] True
[B] False
[C] Partially True 
[D] None of the above
 

(49) Terminal alkynes are alkynes with triple bonds located at the end of the chain

[A] True
[B] False
[C] All of the above
[D] None of the above
 

(50) what is the Bond angle of metane

[A] 109.5o
[B] 106o
[C]119.50
[D] 129.5o
 

(51) Question 51

[A] A primary carbon atom is one whicm is bonded to only one other carbon atom
[B] True
[C] False
[D]
 

(52) A secondary carbon atom is one whicm is bonded directly to two other carbon atoms

[A] True
[B] False
[C] Partially True
[D] None of the above
 

(53) A tertiry carbon atom is one whicm is bonded directly to three other carbon atoms

[A] True
[B] False
[C]
[D]
 

(54) Complete the combustion reaction CH4 + 2O2 → ? + 2H2O

[A] CO
[B] CO2
[C] CO3
[D] 2CO2
 

(55) The reaction of alkanes with halogens is an addition reaction

[A] True
[B] False
[C]
[D]
 

(56) Complete the reaction CH3Cl + Cl2 → ? + HCl in presence of ultraviolent light

[A] CH2 Cl3
[B] CH3 Cl3
[C] CH2 Cl4
[D] CH2 Cl2
 

(57) Complete the reaction CH4 + Cl2 → CH3 Cl+ ? in presence of ultraviolent light

[A] HCl
[B]2HCl
[C] 3HCl
[D]4HCl
 

(58) Complete the reaction ROH + ? → RCl + HCl + POCl3

[A] PCl
[B] PCl2
[C] PCl3
[D] PCl5
 

(59) Complete the reaction CH2Cl2 + Cl2 → CH2 Cl2 + ? in presence of ultraviolent light

[A] CH2Cl3
[B] 2CH2Cl2
[C] CH2Cl2
[D] HCl
 

(60) Complete the reaction ? + Cl2 → CH2 Cl2 + HCl in presence of ultraviolent light

[A] CH3Cl
[B] CH2Cl2
[C] CH2 Cl2 + HCl
[D] CH1Cl3
 

(61) Complete the reaction ? + Cl2 → CCl4 + HCl in presence of ultraviolent light

[A]CH2 Cl3
[B]CH3 Cl
[C] CH3 Cl2
[D] CHCl3
 

(62) Complete the reaction CHCl3 + Cl2 → ? + HCl in presence of ultraviolent light

[A]CH2 Cl2
[B]CHCl3
[C]CCl4
[D] CH2Cl4
 

(63) could be the formula of an alkene.

[A] C3 H8
[B]C3 H6
[C] C6 H6
[D]
 

(64) In general_____are the most reactive hydrocarbons.

[A] Alkenes
[B] Alkynes
[C] Alkanes
[D] Cycloalkanes
 

(65) The addition of HBr to 2-butene produces ...................

[A]1-bromobutane
[B] 2-bromobutane
[C] 1,2-dibromobutane
[D] 2,3-dibromobutane
 

(66) is the reagents necessary to yield the product of the reaction CH2= CH2---> Ethane

[A] : H2 /Pt
[B] 2H2 /Pt
[C] H4 /Pt
[D] H2 /Pt/Ag
 

(67) is the reagents necessary to yield the product of the reaction CH2= CH2 → Chloroethane

[A]H2 /Pt
[B] 2H2 /Pt
[C] H4 /Pt
[D] H2 /Pt/Ag
 

(68) Hydrogenation of an alkene requires high temperatures and a catalyst such as

[A] Ni
[B] Na
[C] Ca
[D] Mg
 

(69) The addition of HBr to 2- Butene produces

[A]1 - bromobutane
[B]2 - bromobutane
[C] 1, 2 - bromobutane
[D] 2, 3 - bromobutane
 

(70) What is the product of H2 C=CH2 + O3 ------>

[A ]H2 C=O
[B] H2 C=O + H2 C=CH2
[C] 3H2 C=O
[D] H2 C=O + H2 C=O
 

(71) An alkynes react with one mole of hydrogen to give

[A] Alkanes
[B] Alkones
[C] Saturated hydrocarbon
[D] UnSaturated hydrocarbon
 

(72) Which one of the following could be a cyclic alkane

[A] C5 H5
[B] C3 H6
[C] C4 H6
[D] C2 H6
 

(73) The reaction of Ag2 NO3 with a sample yield a white precipite. this reaction is only possible with

[A] Alkane
[B] Alkyne
[C]Alkene
[D] Terminal Alkyne
 

(74) What is the product of addition of Ag2 NO3 to alkene is

[A] Saturated hydrocarbons
[B] Unsaturated hydrocarbon
[C] No reaction
[D]
 

(75) What is the product of addition of Ag2 NO3 to alkane is......

[A]Alkenes
[B]Alkanes
[C]Alkanal
[D]No reaction
 

(76) What is the product of addition of Ag2NO3 to ethene is......

[A]Ethane
[B]Ethene
[C]Ethyne
[D]No reaction
 

(77) What is the product of addition of Ag2NO3 to Propane is......

[A]1, 2 - Propan
[B]1- propane
[C]3, 2- propaene
[D]No reaction
 

(78) What is the product of addition of Ag2NO3 to 1, 2, - dimethyl Propane is......

[A]2, propane
[B]1, 3 - propane
[C]1, 3, 4 - butane
[D] No reaction
 

(79) What is the product of addition of Ag2NO3 to Propene is......

[A]Propane
[B]1, 2 - propanol
[C]Butanol
[D]Propanal
 

(80) The reaction between unsaturated hydrocarbons and water in presence of acid is called?

[A]Acid - catalyzed reaction
[B]Water - catalyzed reaction
[C]Based - catalyzed reaction
[D]Acid, based - catalyzed reaction
 

(81) What is the product of CH3-CH2-CH=CH2 + HCl

[A] Chlorobutane
[B] 1 - Chlorobutane
[C] 2 - Chlorobutane
[D] 3 - Chlorobutane
 

(82) What is the product of CH3 -CH2 -CH=CH2 + H2 in presence of a catalyste

[A]1, 2 - butane
[B] 1- butane
[C] 2- butane
[D] propane
 

(83) What is the product of CH3 -CH2 -CH=CH2 + HBr

[A] Bromobutane
[B] 1- bromobutane
[C] 2-bromobutane
[D] butane
 

(84) Addition of hydrogen to an alkene is called?

[A] Base-Catalytic hydrogenation
[B] Base- Catalytic reaction
[C] Acid-Catalytic hydrogenation
[D] Catalytic hydrogenation
 

(85) Fluorine is not always used in the addition reaction of unsaturated hdrocarbons because the reaction with fluorine is?

[A] slow
[B] fast
[C] explosive
[D] no reaction
 

(86) Complete the reaction CH4 + ?----> CO2 + 2H2 O

[A] O
[B] 2O
[C] O2
[D] 2O2
 

(87) Complete the reaction CH4 + 2O2 ------> CO2 + ?

[A] H2O
[B]H2
[C]2H3O
[D ]2H2O
 

(88) The addition of bromine solution can be used as qualitative test for the presence of unsaturation

[A] True
[B] False


 

(89) Markonikovs rule state that the more electropositive part of the reagent should go to carbon bond that has the lesser number of hydrogen atoms

[A] True
[B] False


 

(90) Markonikovs rule state that The more electropositive part of the reagent should go to carbob bond that has the lesser number of hydrogen atoms

[A] True
[B] False


 

(91) The members of homologous series conform to a different general molecular formula

[A] True
[B] False


 

(92) The members of homologous series conform to the same general molecular formula

[A] True
[B] False


 

(93) The members of homologous series change gradually in their physical properties as the relative molecular mass increases

[A] True
[B] False


 

(94) The members of homologous series does not changes in their physical properties as the relative molecular mass increases

[A] True
[B] False


 

(95) The members of homologous series are prepared using thesame general methods

[A] True
[B] False


 

(96) The members of homologous series are prepared using different general methods

[A] True
[B] False


 

(97) The members of homologous series show similar chemical properties

[A] True
[B] False


 

(98) The boiling and melting points of straight chain hydrocarbon increases with increasing molar mass

[A] True
[B] False


 

(99) The boiling and melting points of straight chain hydrocarbon decreases with increasing molar

[A] True
[B] False
[C] Partially True 
[D] None of the above
 

(100) The branch chain isomers boil at lower temperatures than the isomeric straight chain

[A] True
[B] False
[C] Partially Correct
[D] None of the above

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