CIE Organic chemistry and analysis Quizz 3 Welcome to your CIE Organic chemistry and analysis Quizz 3 Which of the following is true about alcohols? Alcohols undergo substitution reaction to form halogenoalkanes Primary alcohols oxidise to produce ketones Tertiary alcohols oxidise to produce ketones Hydrogen bonding allows them to be very volatile Which of the following is not a product when ethanol reacts with phosphorous (V) chloride? Water hydrogen chloride gas chloroethane POCl3 Pentanoic acid reacts with propan-1-ol in presence of acid to form? propylpentanoate pentylpropanoate propylpentanone propylpentanal What is product of reaction between acylchloride and alcohol? Ester Carboxylic acid Acid anhydride Amide Which of the following is correct about phenol?I. Phenol is less reactive than benzeneII. Phenols are weaker acids compared to carboxylic acids. III. Phenol is a strong acid when compared to water or ethanol. II and III only I and III only I only II only Which of the following causes formation of a silver mirror in test-tube when Tollen's reagent is added to it? Butanal Butanone Butanoic acid Butene What is the product when sodium tetrahydridoborate is added to propanone in aqueous ethanol? Propan-2-ol propan-1-ol Propanoic acid propanal What happens when Fehling's solution is added to butanone? No reaction Formation of orange precipitate Silver mirror formation Solution turms colourless What is the product of oxidation of aldehydes? Carboxylic acid Alcohol They cannot be oxidised Ketone What is observed when propanal reacts with 2,4 dinitro phenylhydrazine? orange precipitate red precipitate silver mirror no reaction Which of the following statement(s) is(are) true?I. Methanoic acid can be oxidisedII. Alchohols react with acid anhydrides to form estersIII. Carboxylic acids do not form salts on reaction with bases I and II only I and III only I only II only Which of the following is used to synthesise propanoic acid with an intermediate step of converting to nitriles? Bromoethane Bromopropane Bromomethane Bromobutane What is the product of the reaction when carboxylic acid reacts with phosphorous (V) chloride? Acyl chloride ester Acid anhydride Ketone Which of the following is the strongest base? Methylamine Ethylamine Ammonia Phenylamine Excess ammonia dissolved in ethanol is reacted with halogenoalkane. What is most likely to be the end product of the reaction that is present in excess? Primary amine Quaternary ammonium salt Secondary amine Tertiary amine Time is Up!