Chapter 22 - Alkanes and Alkenes

Which of the following can decolorize acidified potassium permanganate solution?

(1) sodium sulphite solution

(2) ethane

(3) ethene

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Which of the following statements concerning propene is/are correct?

(1) It dissolves in water to form propan-1-ol.

(2) It can undergo addition polymerization.

(3) It can be prepared by the catalytic cracking of a saturated hydrocarbon.

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Which of the following products may be formed from the cracking of heavy oil fraction?

(1) CO

(2) C₂H₄

(3) C₈H₁₈

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

Propene reacts with acidified potassium permanganate solution to form

• CH₃CH₂CH₂OH.

• CH₃CH(OH)CH₃.

• CH₃CH(OH)CH₂OH.

• CH₂OHCH(OH)CH₂OH.

C₁₀H₂₂ -----> C₆H₁₄ + 2 X

Which of the following concerning the above process and X is correct?

• fractional distillation and an alkane

• fractional distillation and an alkene

• cracking and an alkane

• cracking and an alkene

The model as shown represents a compound containing 6 hydrogen atoms (white spheres) and 3 carbon atoms

(black spheres). Which of the following statements concerning the compound is INCORRECT?

• Its structural formula is C₃H₆.

• It can be prepared by cracking petroleum fractions.

• It can decolorize bromine in 1,1,1-trichloroethane.

• It can undergo polymerization.

Which of the following statements concerning the reaction of methane with bromine is/are correct?

(1) It is an addition reaction.

(2) It is a substitution reaction.

(3) A similar reaction will occur if propane is used instead of methane.

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Which of the following statements concerning the compounds C₂H₄, C₃H₆ and C₄H₁₀ is correct?

• They belong to the same homologous series.

• They are unsaturated hydrocarbons.

• They are gases at room temperature and pressure.

• They have the same physical properties.

A compound has the structure as shown:

Which of the following statements about this compound are correct?

(1) It can decolorize bromine water.

(2) It can be polymerized.

(3) It can burn in air.

• (1) & (2) only

• (1) & (3) only

• (2) & (3) only

• (1), (2) & (3)