1) -------- The Hydrocarbons are compounds that contains a) C+H b) C+N c) H+O d) N+O 2) ?How many bonds must carbon have a) 3 b) 4 c) 5 d) 6 3) --------- The molecular formula for methan is a) CH2 b) CH3 c) CH4 d) C2H6 4) ----------The general formula of the alkanes a) CnHn+2 b) C2nH2n c) CnH2n+2 d) CnH2n-2 5) -----------If the alkane has 22 hydrogen atoms how many carbon atoms in it a) 7 b) 8 c) 9 d) 10 6) ---------- The simplest hydrocarbons is a) Methane b) Ethane c) Propane d) Butane 7) ----------( the general formula of acetylene (Ethayene a) C2H6 b) C2H4 c) C2H2 d) C2H8 8) ? Which of these molecular formulas f0r unsaturated cyclohydrocarbons a) C2H2 b) C6H6 c) C6H12 d) C6H12O6 9) --------Organic compounds that contain a benzene ring of their structure are called a) Organic compounds b) Aliphatic compounds c) Aromatic compounds d) Alkyle compounds 10) ?what kind of bonds in unsaturated hydrocarbons a) Single bonds b) Double bonds c) Trible bonds d) Double or Trible bonds

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