Question 11 : How many other unsaturated isomers are there of pent-1-ene?
1. 3
2. 1
3. 2
4. 4
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Question 12 : Acetylene is prepared by the action of water on
1. Al₄C₃
2. Silicon carbide
3. CaC₂
4. All of these
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Question 13 : How many cyclic isomers are there of pentene?
1. 1
2. 3
3. 2
4. 4
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Question 14 : The process of catalytic cracking involves using
1. an aluminium catalyst to produce larger hydrocarbons
2. an aluminium catalyst to produce smaller hydrocarbons
3. an aluminium oxide catalyst to produce smaller hydrocarbons
4. an aluminium oxide catalyst to produce larger hydrocarbons
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Question 15 : n-Proply bromide on treatment with ethanolic KOH is
1. Propane
2. Propene
3. Propyne
4. Propanal
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Question 16 : How many isomers are there of pentane?
1. 2
2. 1
3. 3
4. 4
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Question 17 : The general formula for the alkenes is
1. CnHn
2. CnH2n+2
3. CnH2n-2
4. CnH2n
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Question 18 : The formula that shows how atoms are arranged in a molecule is called the
1. actual formula
2. structural formula
3. empirical formula
4. molecular formula
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Question 19 : Which four of the following statements about alkenes are correct?
1. At normal temperatures and pressures, the first six members are liquids.
2. Their general formula is C_NH_2N
3. Alkenes are unsaturated hydrocarbons
4. Alkenes are insoluble in non-polar solvents such as cyclohexane
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Question 20 : Which one of these is not a source of methane gas?
1. Burning coal
2. Refuse dumps
3. Anaerobic decomposition of animal waste
4. Ruminating animals such as cattle, sheep and pigs
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