Chemistry · Science General
Alcohols, Ethers and Carboxylic Acids
359 Questions
Alcohols, ethers, and carboxylic acids questions explore organic chemistry reactions, chemical formulas, and compound identifications. The topics cover practical applications like antifreeze production and specific chemical conversions. This material helps candidates preparing for science oriented competitive exams.
Organic reactionsChemical compounds identificationAlcohol conversionCarboxylic acid propertiesIndustrial chemical applications
Alcohols, Ethers and Carboxylic Acids Questions
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Pyruvic acid
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Acetic acid
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Acetaldehydes and formic acid
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Propanoic acid
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Both (3) and (4)
A
Correct answer
Explanation
When lactic acid is treated with fenton reagent, it is easily oxidised to form pyruvic acid. This option is correct.
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Ionone
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Nitrobenzene
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Pyridine
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Resorcinol
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Both (3) and (4)
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isocyante reacts with alcohol
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phenol is heated with excess of formaldehydes
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excess phenol is heated with formaldehydes
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propylene is treated with Ziegler-Natta catalyst
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None of these
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It is used in making perfumes.
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It is used as a flavouring agent.
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It is used in preparation of soap.
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It is used as an antiseptic.
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addition
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oxidation
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fermentation
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hydration
A
Correct answer
Explanation
In addition reaction, double or triple bonded compounds are converted into single bonded compounds.
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ethanol
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sodium carbonate
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sodium ethanoate
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sodium proponate
C
Correct answer
Explanation
In the manufacture of methane, sodium hydroxide is treated with sodium ethanoate.
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ethanol donates proton to water
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it is an acid base reaction
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they form hydrogen bonding
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ethanol gets ionised in water
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Ethyl alcohol
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Amyl alcohol
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Benzyl alcohol
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Methyl alcohol
D
Correct answer
Explanation
Methyl alcohol (methanol) is highly toxic when ingested. It is often illegally added to illicit liquor, and its metabolic breakdown produces formic acid, which can cause permanent blindness or death.
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acetylene
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methyl alcohol
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methane
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None of these
B
Correct answer
Explanation
The reaction between formaldehyde and a strong base like potassium hydroxide is a Cannizzaro reaction, which produces methanol (methyl alcohol) and potassium formate.
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Ether
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Ethanol
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Methanol
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Acetylene
D
Correct answer
Explanation
Acetylene is commonly used in the welding industry for oxy-acetylene welding because it produces a very hot flame when burned with oxygen.
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Ethyl alcohol
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Amyl alcohol
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Benzyl alcohol
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Methyl alcohol
D
Correct answer
Explanation
Methyl alcohol (methanol) is highly toxic and is often illegally added to illicit liquor; its ingestion can cause blindness and death.
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Only 1
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Only 2
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Only 3
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Only 1 and 2
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Only 2 and 3
E
Correct answer
Explanation
This option is correct because on treating with alcoholic KOH, 1-chlorobutane gives 1-butene while 2-chlorobutane gives 2-butene (major) + 1-butene (minor). Therefore a mixture of 1-butene and 2-butene is formed.
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HCHO
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CH3CH2CHO
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CH3COCH3
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CH3CHO
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None of these
A
Correct answer
Explanation
This option is correct. The carbonyl compounds have at least one alpha-hydrogen atom. So, formaldehyde does not give aldol condensation.
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azobisisobutyronitrile (AIBN) reagent
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burgess reagent
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the Jone's reagent
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tollen reagent
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None of these
C
Correct answer
Explanation
This option is correct because Jone's reagent is the solution of chromium trioxide in diluted sulphuric acid. This reagent is prepared from soduim dichromate and potassium dichromate, which is especially used for the oxidation of secondary alcohol to ketones and primary alcohol, and then into carboxlyic acid and in few cases into aldehydes.
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C2H5OH
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CH3COOH
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CO + H2
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CH3COCH3
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None of these
C
Correct answer
Explanation
This option is correct because water gas can be used to prepare methyl alcohol industrially in the presence of ZnO + Cr2O3 + CuO at 400-4500C.