StudentAidUnit 11: Unit 11: Hydrocarbons — Mcqs
11th Class Chemistry · Unit 11: Hydrocarbons
0 of 0 answered
0 correct
1.An alkene undergoes ozonolysis followed by reduction with zinc dust and water to yield propanone and methane. The alkene is:
2.Which of the following reagents is typically used for the acid-catalyzed hydration of alkenes to form alcohols?
3.Halogenation of alkanes is an example of:
4.Which of the following reactions can an alkane undergo?
5.What is the first step in the electrophilic addition reaction of alkenes?
6.The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with:
7.The most stable carbonium ion among the following is:
8.Markovnikov's rule is applicable to:
9.What intermediate is formed during the electrophilic addition of HBr to an alkene?
10.The enhanced stability of conjugated dienes compared to isolated dienes is primarily attributed to:
11.Which of the following carbocations would be the least stable?
12.Which of the following is the repeating unit in the polymer poly(ethene) (polyethylene)?
General Properties Hydrocarbons
13.Hydrocarbons are compounds made of:
14.Alkanes are also called:
15.Which of the following is an aromatic hydrocarbon?
16.Which hydrocarbon has only single bonds?
17.Which of these hydrocarbons is saturated?
18.Which class of hydrocarbons contains one or more double bonds?
19.Aromatic hydrocarbons must contain:
20.Cycloalkanes differ from alkanes by:
21.The general formula for alkanes is:
22.Ethene belongs to which class of hydrocarbons?
Nomenclature and Structure
23.What is the IUPAC name of CH₃CH₂CH₃?
24.The shape of the ethane molecule is:
25.What is the correct IUPAC name of CH₃CH=CH₂?
26.The shape of ethene molecule is due to:
27.What is the prefix for a three-carbon chain in IUPAC nomenclature?
28.The IUPAC name for CH=CH is:
29.Which compound is a cycloalkane?
30.The structure of methane contains how many sigma bonds?
31.The bond angle in ethene is approximately:
32.A molecule of ethyne contains how many π-bonds?
Reactions of Alkanes
33.Alkanes react with halogens via:
34.Which condition is essential for halogenation of methane?
35.What is the first step in the free radical mechanism?
36.Which is an example of propagation step?
37.Free radical reactions typically occur in:
38.The termination step in a radical chain reaction involves:
39.Which of the following is not a free radical?
40.Chlorination of propane gives how many types of monochlorinated products?
41.What type of bond cleavage occurs in the initiation step?
42.Which of the following is most stable?
Reactions of Alkenes
43.Alkenes react with bromine water to form:
44.The test for unsaturation in a hydrocarbon that disappears the colour is:
45.Alkenes undergo which type of reaction?
46.In the electrophilic addition of HBr to propene, the major product is:
47.The intermediate formed during electrophilic addition is:
48.The product formed when ethene reacts with H₂ in the presence of Ni is:
49.The addition of water to alkenes in presence of acid catalyst forms:
50.Reaction of ethene with cold, dilute alkaline KMnO₄ gives:
51.Markovnikov's rule is used to predict:
52.Anti-Markovnikov's addition occurs in the presence of:
Isomerism in Hydrocarbons
53.Isomers are compounds with:
54.Chain isomerism occurs due to differences in:
55.Which of the following shows position isomerism?
56.The number of possible isomers of C₄H₁₀ is:
57.Which of the following has a branched structure?
58.Geometrical isomerism is possible in:
59.Which is a pair of geometrical isomers?
60.Geometrical isomerism is due to:
61.Structural isomers differ in:
62.Which of the following represents a positional isomer of CH₃CH₂CH=CH₂?
Polymerization and Uses
63.Polymerization of ethene gives:
64.Which of the following is an addition polymer?
65.Monomer of polystyrene is:
66.Teflon is a polymer of:
67.Natural rubber is a polymer of:
68.Which of the following is a copolymer?
69.Vulcanization of rubber increases its:
70.Which of these monomers forms a condensation polymer?
71.A polymer used for non-stick cookware is:
72.Which of the following is not a property of polymers?