Q1. Which compound is formed by the ozonolysis of 2-pentene followed by hydrolysis?A. AcetoneB. MethanalC. PropanalD. Butanal
Q2. Which ketone is produced when 3-hexyne is hydrated with \( \ce{HgSO4/H2SO4} \)?A. Hexan-3-oneB. Hexan-2-oneC. Pentan-3-oneD. Hexanal
Q3. What is the product of propanal and butanal in cross aldol condensation?A. \( \ce{CH3CH=CHCHO} \)B. \( \ce{CH3CH2CH=CHCHO} \)C. \( \ce{CH3CH2CH2CH=CHCHO} \)D. \( \ce{CH3CH2CH2CH=CHCH2CH3} \)
Q4. Which test produces a red precipitate with butanal but not with butanone?A. Iodoform testB. Schiff’s testC. Fehling’s testD. 2,4-DNP test
Q5. Arrange in decreasing order of boiling points: Propanal, Propanone, Propan-1-ol.A. Propanone > Propanal > Propan-1-olB. Propanal > Propan-1-ol > PropanoneC. Propan-1-ol > Propanal > PropanoneD. Propan-1-ol > Propanone > Propanal
Q6. Which compound is formed when pentanal reacts with semicarbazide?A. Pentanoic acidB. Pentanal semicarbazoneC. Pentan-1-olD. Pentanal oxime
Q7. Which reagent can reduce pentanoic acid to pentanal without forming an alcohol intermediate?A. \( \ce{LiAlH4} \)B. \( \ce{NaBH4} \)C. \( \ce{Zn(Hg), HCl} \)D. \( \ce{H2, Pd} \)
Q8. Arrange in increasing order of acidity: \( \ce{CH3COOH} \), \( \ce{CH2ClCOOH} \), \( \ce{CH3CH2COOH} \).A. \( \ce{CH2ClCOOH} \) < \( \ce{CH3COOH} \) < \( \ce{CH3CH2COOH} \)B. \( \ce{CH3COOH} \) < \( \ce{CH3CH2COOH} \) < \( \ce{CH2ClCOOH} \)C. \( \ce{CH3CH2COOH} \) < \( \ce{CH3COOH} \) < \( \ce{CH2ClCOOH} \)D. \( \ce{CH3CH2COOH} \) < \( \ce{CH2ClCOOH} \) < \( \ce{CH3COOH} \)
Q9. Which compound liberates \( \ce{CO2} \) when heated with calcium hydroxide and another carboxylic acid?A. Butanoic acidB. ButanalC. ButanoneD. Pentanol
Q10. What is the product when pentan-3-one is treated with \( \ce{NaBH4} \)?A. PentaneB. Pentan-2-olC. Pentan-3-olD. Pentanal