Chemistry Test Preparations On Hydrocarbs Part 2

Test Preparation on Chemistry Test Preparations On Hydrocarbs Part 2

1.

Which three of the following are properties of alkynes?

1Alkynes have similar physical properties.
2The lower members are gases at normal temperatures and pressures.
3They are all soluble in water.
4Alkynes are soluble in non-polar solvents like methylbenzene.

2.

How can you determine if a reaction is endothermic?

1The temperature of the system increases.
2The temperature of the system decreases.
3The temperature of the system remains constant.
4The temperature of the system fluctuates

3.

Which four of the following statements about alkenes are correct?

1Alkenes are unsaturated hydrocarbons
2Their general formula is C_NH_2N
3Alkenes are insoluble in non-polar solvents such as cyclohexane
4At normal temperatures and pressures, the first six members are liquids.

4.

Which one of these is not a source of methane gas?

1Anaerobic decomposition of animal waste
2Refuse dumps
3Ruminating animals such as cattle, sheep and pigs
4Burning coal

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