Chemistry Organic chemistry Test 6 Welcome to your Chemistry Organic chemistry Test 6 Name Email 1.Which of the following is the largest component of natural gas? (a) Methanol (b) Ethanol (c) Ethane (d) Metha None 2.Liquefied petroleum gas (LPG) used for cooking in homes is a combination of: (a) methane and butane (b) methane and propane (c) hexane and propane (d) propane and butane None 3.Which of the following is NOT a property of graphite? (a) It is a conductor of electricity. (b) It has low melting point. (c) It has a lower density than diamond. (d) It is a conductor of heat.. None 4. Unsaturated carbon compounds burn with a: (a) orange sooty flame (b) white sooty flame (c) red sooty flame (d) yellow sooty flame None 5.How many naturally occurring isotopes does carbon have? (a) 2 (b) 4 (c) 5 (d) 3 None 6.What is the bond angle (in degrees) in the structure of a benzene molecule? (a)150 (b)90 (c)120 (d)60 None 7.With symbols having their usual meanings, which one among the following is used as the standard for defining atomic mass unit? (a) C-12 (b) H-1 (c) N-14 (d) O-8 None 8.Which of the following is the allotropic form of carbon? (a) Coal (b) Graphite (c) Charcoal (d) Lamp black None 9.What is the chemical formula of dichlorodifluoromethane? (a) (b) (c) (d) None 10.Organic compounds are compounds of the element ____. (a) carbon (b) lead (c) silicon (d) nitrogen None 11.The three-carbon molecules broken down from six-carbon molecules of glucose during the first step in the process of nutrition in all organisms is called: (a) methane (b) butane (c) pyruvate (d) ethane None 12.. How many carbon and hydrogen atoms are there in Propane, respectively? (a)2,4 (b)3,8 (c)2,6 (d)4 None 13.In which of the following carbon functional groups there is no oxygen? (a)Alcohol (b)Halogen (c)Aldehyde (d)Keton None 14.Which of the following is not an Allotrope of Carbon? (a)Graphite (b)Methane (c)Diamond (d)C-60 Buckminsterfullerene None 15.Which of the following is NOT an unsaturated carbon com (a)Acetylene (b)Pentene (c)Butane (d)Benzene None 16.Which of the following is a sweet smelling substance? (a) Ammonia (b) Methanol (c) Esters (d)Ethanol None 17.Name the element that must be present in a compound to classify it as an organic compound. (a) Carbon (b) Iron (c) Ammonia (d) Zinc None 18.Which of the following are amongst the few carbon- containing compounds NOT classified as organic? (a) Methane (b) Nucleic acids (c) Cyanides (d) Propane None 19.Which of the following is an aldehyde? (a) Propanel (b) Propanol (c) Propanone (d) Propine None 20.Which of the following has a strong fruity fragrance? (a) Methyl chloride (b) Methanoic acid (c) Methanol (d) Ethyl acetate None 21.Buckminsterfullerene is an allotrope of : (a) Boron (b) Iron (c) Phosphorus (d)Carbon None 22. The property of catenation is predominant in _______. (a) sulphur (b) nitrogen (c) silicon (d) carbon None 23.Methylpropane is an isomer of: (a) n-hexane\ (b) n-butane (c) n-propane (d) n-pentane None Time's up
