CHEM. MC 2

Question 9:Plastics can be recycled by(1) producing the monomers from the used plastics and remoulding.(2) remaking them into plastics sheets for large bin bags.(3) pyrolysis.A. (1) and (2) onlyB. (1) and (3) onlyC. (2) and (3) onlyD. All of them Question 17:Which of the following does not undergo a reaction with C2H4?A. Acidified potassium permanganateB. Hydrogen chlorideC. Bromine in tetrachloromethaneD. Aqueous ammoniaE. Hydrogen in the presence of nickel powder Question 18:Which of the following statements about propene is correct?A. It belongs to the homologous series with the general formula: CnH2n+2B. It belongs to the homologous series with the general formula: CnH2n-2C. It is not absorbed by concentrated sulphuric acid.D. It has a molecule containing the same number of hydrogen atom as in anethane molecule.E. It does not decolourize bromine water. Question 19:Which of the following statements is NOT true for ethene?A. It burns with a luminous flame.B. It decolourizes bromine water.C. It can be hydrogenated.D. It can be polymerized.E. It is a liquid at room temperature and pressure. Question 3:Which of the following statements concerning propene is/are correct?(1) It dissolves in water to form propan-1-ol(2) It can undergo polymerization(3) It can be prepared by the catalytic cracking of a saturated hydrocarbonA. (2) onlyB. (1) and (2) onlyC. (1) and (3) onlyD. (2) and (3) onlyE. All of them