Major Competitive Exams

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Q. Which reagent is commonly used to distinguish between aldehydes and ketones?
  • A. Benedict's solution
  • B. Tollens' reagent
  • C. Fehling's solution
  • D. All of the above
Q. Which reagent is commonly used to oxidize aldehydes to carboxylic acids?
  • A. KMnO4
  • B. NaBH4
  • C. LiAlH4
  • D. H2
Q. Which reagent is commonly used to oxidize primary alcohols to aldehydes?
  • A. KMnO4
  • B. PCC
  • C. Na2Cr2O7
  • D. H2SO4
Q. Which reagent is commonly used to reduce aldehydes to primary alcohols?
  • A. LiAlH4
  • B. KMnO4
  • C. NaBH4
  • D. H2SO4
Q. Which reagent is commonly used to test for aldehydes?
  • A. Benedict's solution
  • B. Tollens' reagent
  • C. Fehling's solution
  • D. All of the above
Q. Which reagent is commonly used to test for the presence of alkenes?
  • A. Bromine water
  • B. Silver nitrate
  • C. Sodium hydroxide
  • D. Hydrochloric acid
Q. Which reagent is commonly used to test for the presence of alkynes?
  • A. Bromine water
  • B. Silver nitrate
  • C. Sodium metal
  • D. Bayer's reagent
Q. Which reagent is commonly used to test for the presence of aromatic compounds?
  • A. Bromine water
  • B. Silver nitrate
  • C. Bayer's reagent
  • D. Sodium dichromate
Q. Which reagent is commonly used to test for the presence of phenols?
  • A. Bromine water
  • B. Sodium dichromate
  • C. Fehling's solution
  • D. Tollens' reagent
Q. Which reagent is commonly used to test for the presence of unsaturation in organic compounds?
  • A. Bromine water
  • B. Sodium hydroxide
  • C. Hydrochloric acid
  • D. Silver nitrate
Q. Which reagent is commonly used to test for unsaturation in organic compounds?
  • A. Bromine water
  • B. Sodium bicarbonate
  • C. Potassium permanganate
  • D. Both 1 and 3
Q. Which reagent is used for the oxidation of primary alcohols to aldehydes?
  • A. KMnO4
  • B. PCC
  • C. Na2Cr2O7
  • D. H2SO4
Q. Which reagent is used for the selective hydrogenation of alkynes to alkenes?
  • A. Pd/BaSO4
  • B. LiAlH4
  • C. H2/Pt
  • D. NaNH2
Q. Which reagent is used for the test of unsaturation in alkenes?
  • A. Bromine water
  • B. Potassium permanganate
  • C. Sodium dichromate
  • D. All of the above
Q. Which reagent is used to convert a carboxylic acid to an alcohol?
  • A. LiAlH4
  • B. NaBH4
  • C. H2SO4
  • D. KMnO4
Q. Which reagent is used to convert alcohols to alkyl halides?
  • A. SOCl2
  • B. NaOH
  • C. H2SO4
  • D. KMnO4
Q. Which reagent is used to convert an alcohol into an alkyl halide? (2022)
  • A. PCl5
  • B. NaBH4
  • C. LiAlH4
  • D. H2SO4
Q. Which reagent is used to convert an alcohol to an alkene?
  • A. H2SO4
  • B. NaOH
  • C. KMnO4
  • D. HCl
Q. Which reagent is used to convert an alcohol to an alkyl halide?
  • A. SOCl2
  • B. H2SO4
  • C. NaBr
  • D. KMnO4
Q. Which reagent is used to convert an alcohol to an alkyl halide? (2023) 2023
  • A. PCl5
  • B. NaOH
  • C. H2SO4
  • D. KMnO4
Q. Which reagent is used to convert an aldehyde to a primary alcohol?
  • A. LiAlH4
  • B. NaBH4
  • C. H2/Pd
  • D. All of the above
Q. Which reagent is used to convert an alkene to an alcohol?
  • A. H2O
  • B. H2
  • C. HCl
  • D. NaOH
Q. Which reagent is used to convert an alkyne to a cis-alkene?
  • A. H2/Pd
  • B. H2/Lindlar's catalyst
  • C. Li/NH3
  • D. Na/NH3
Q. Which reagent is used to convert an amine to an amide? (2023)
  • A. Acid chloride
  • B. Alcohol
  • C. Aldehyde
  • D. Ketone
Q. Which reagent is used to convert haloalkanes to alcohols?
  • A. Sodium hydroxide
  • B. Sodium bicarbonate
  • C. Sodium chloride
  • D. Sodium acetate
Q. Which reagent is used to convert phenol to phenyl ether?
  • A. Sodium hydroxide
  • B. Sodium phenoxide
  • C. Bromine
  • D. Hydrochloric acid
Q. Which reagent is used to distinguish between aldehydes and ketones?
  • A. Benedict's solution
  • B. Tollens' reagent
  • C. Fehling's solution
  • D. All of the above
Q. Which reagent is used to test for the presence of alkenes?
  • A. Bromine water
  • B. Potassium permanganate
  • C. Both A and B
  • D. None of the above
Q. Which reformer is credited with the introduction of modern education in India during the 19th century?
  • A. Raja Ram Mohan Roy
  • B. Swami Vivekananda
  • C. Mahatma Gandhi
  • D. B.R. Ambedkar
Q. Which respiratory process occurs in the alveoli? (2023)
  • A. Inhalation
  • B. Exhalation
  • C. Gas exchange
  • D. Ventilation
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