Chapter 11: Hydrocarbons
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Alkenes
Q.1
An alkene undergoes ozonolysis followed by reduction with zinc dust and water to yield propanone and methanal. The alkene is:
Q.2
Which of the following reagents is typically used for the acid-catalyzed hydration of alkenes to form alcohols? 5J0
Alkanes
Q.3 Halogenation of alkanes is an example of:
Q.4
Which of the following reactions can an alkane undergo?
Reactions of Alkenes
Q.5
What is the first step in the electrophilic addition reaction of alkenes?
Q.6
The of unsymmetrical reagent to an unsymmetrical alkene is in accordance with:
Q.7
The most stable carbonium ion among the following is:
Q.8
Markovnikov's rule is applicable to:
Q.9
What intermediate is formed during the electrophilic addition of HBr to an alkene?
Q.10
The enhanced stability of conjugated dienes compared to isolated dienes is primarily attributed to:
Q.11
Which of the following carbocations would be the least stable?
Q.13 Hydrocarbons are compounds made of:
Alkanes
Q.14
are also called:
Q.15
Which of the following is an aromatic hydrocarbon?
Q.16
Which hydrocarbon bonds?
Q.17
Which hydrocarbons is saturated?
Q.18
Which class of hydrocarbons contains one or more double bonds?
Q.19 Aromatic hydrocarbons must contain:
Q.20 Cycloalkanes differ from alkanes by:
Q.21 The general formula for alkanes is:
Q.23
What is the IUPAC name of CH: CH¿CH›?
Q.24 The shape of the ethane molecule is:
Q.25
What is the correct IUPAC name of CH: CH=CH›?
Q.26 The shape of ethene molecule is due to:
Q.27
What is the prefix for a three-carbon chain in IUPAC nomenclature?
Q.28 The IUPAC name for CH=CH is:
Q.29
Which compound is a cycloalkane?
Q.30
The structure of methane contains how many sigma bonds?
Q.31 The bond angle in ethene is approximately:
Alkynes
Q.32
A molecule of ethyne contains how many a-bonds?
Alkanes
Q.33
react with halogens via:
Q.34
Which condition is essential for halogenation of methane?
Q.35
What is the first step in the free radical mechanism?
Q.36
Which is an example of propagation step?
Q.37 Free radical reactions typically occur in:
Q.38
The termination step in a radical chain reaction involves:
Q.39
Which of the following is not a free radical?
Q.40
Chlorination of propane gives how monochlorinated of many types products?
Q.41
What type of bond cleavage occurs in the initiation step?
Q.42
Which of the following is most stable?
Alkenes
Q.43
react with bromine water to form:
Q.44
The test for unsaturation in a hydrocarbon that disappears the colour is:
Alkenes
Q.45
undergo which type of reaction?
Q.46
In the electrophilic addition of HBr to propene, the major product is:
Q.47
The intermediate formed during 55. Which of the following shows position electrophilic addition is:
Q.48
The product formed when ethene reacts with Hz in the presence of Ni is:
Q.49
The addition of water to alkenes in presence of acid catalyst forms:
Q.50
Reaction of ethene with cold, dilute alkaline KMnO, gives:
Q.51
Markovnikov's rule is used to predict:
Q.52
Anti-Markovnikov's addition occurs in the presence of:
Q.53
Isomers are compounds with: same
Q.54 Chain isomerism occurs due to differences in:
Q.56 The number of possible isomers of C4H1o is:
Q.57
Which of the following has a branched chain structure?
Q.58 Geometrical isomerism is possible in:
Q.59 Geometrical isomerism is due to:
Q.60 Structural isomers differ in:
Q.61
Which of the following represents of CH CH CH=CH›?
Q.63 Polymerization of ethene gives:
Q.64
Which of the following is an addition polymer?
Q.65 Monomer of polystyrene is:
Q.66 Teflon is a polymer of:
Q.67 Natural rubber is a polymer of:
Q.68
Which of the is following copolymer?
Q.69 Vulcanization of rubber increases its:
Q.70
Which of these monomers forms a condensation polymer?
Q.71 A polymer cookware is:
Q.72
Which of the following is not a a property of polymers?