Maths Group11

Chemistry some questions from grade 11 unit 6. 1. What is the general formula for alcohols, a class of oxygen-containing hydrocarbons?     A) CnH2n     B) CnH2n+2     C) CnH2nO     D) CnH2n-2O  2. Which of the following is a common example of a ketone?     A) Ethanol     B) Acetone     C) Methanol     D) Butanoic acid  3. What type of reaction occurs when an alcohol reacts with a carboxylic acid to form an ester?     A) Hydrolysis     B) Dehydration synthesis     C) Oxidation     D) Reduction  4. Which of the following compounds is a phenol?     A) C6H5OH     B) CH3COOH     C) C2H5OH     D) C3H7COOH  5. What is the primary functional group in aldehydes?     A) -OH     B) -CHO     C) -COOH     D) -C=O  6. Which of the following compounds is not an alcohol?     A) Ethanol     B) Propanol     C) Butanoic acid     D) Isopropanol  7. What is the product of the complete combustion of a hydrocarbon with oxygen?     A) Carbon dioxide and water     B) Carbon monoxide and water     C) Carbon and hydrogen gas     D) Water and alcohol  8. Which of the following statements is true regarding ethers?     A) They contain a carbonyl group.     B) They have the general formula R-O-R'.     C) They are always aromatic compounds.     D) They are more acidic than alcohols.  9. Which hydrocarbon contains both a hydroxyl group (-OH) and a carbonyl group (C=O)?     A) Alcohol     B) Aldehyde     C) Ketone     D) Hydroxy ketone  10. What type of bond is present in esters formed from alcohols and acids?      A) Ionic bond      B) Hydrogen bond      C) Covalent bond      D) Metallic bond  Try your best. The answer will be released soon.