Phenols - ISC Class 12 Chemistry Questions with Answers
30 past-paper questions on Phenols from ISC Class 12 Chemistry papers (2027-2018), newest first. Open one to see its answer.
- Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [methyl alcohol, ethyl alcohol, paired… 2027 · 1 mark · Fill in
- Write chemical tests to distinguish between the following pairs of compounds: Phenol and acetic acid Ethanol and methanol 2026 · 2 marks · Short answer
- Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [electrophilic, four, 4-bromophenol… 2026 · 1 mark · Fill in
- How will you convert the following (write chemical equation): Phenol to salicylaldehyde Formaldehyde to ethanol 2026 · 2 marks · Short answer
- Phenols are more acidic than aliphatic alcohols. Given below are two statements marked Assertion and Reason. Read the two… 2026 · 1 mark · Assertion-reason
- Phenol, one of the deadliest acids, contains a hydroxy group directly attached to the aromatic ring. A hydroxy group attached to… 2025 · 5 marks · Short answer
- Write the chemical test to distinguish between each of the following pairs of compounds: Ethanol and propan-1-al Phenol and… 2025 · 2 marks · Short answer
- The $pK_a$ value of o-nitrophenol is ____ than p-nitrophenol and its acidic character is ____ than p-nitrophenol. 2025 · 1 mark · Fill in
- Phenol is an aromatic alcohol that is used to prepare many important compounds such as picric acid. Phenol is widely used in… 2025 · 5 marks · Short answer
- Alcohols are the compounds that have one or more hydroxyl groups bonded to aliphatic carbon atoms while phenols are the compounds… 2025 · 5 marks · Short answer
- Which one of the following alcohols is the strongest acid? 2025 · 1 mark · MCQ
- The amount of bromine required to completely convert $9\cdot4\text{ g}$ of phenol into 2,4,6 tribromophenol is: (Atomic weight of… 2025 · 1 mark · MCQ
- The correct order of acidic strength among the following organic compounds is: 2025 · 1 mark · MCQ
- Give reason: The $K_a$ for p- nitro hydroxy benzene is $6.9 \times 10^{-8}$ whereas o-nitro benzene is $6.0 \times 10^{-8}$… 2025 · 3 marks · Short answer
- An organic compound [A] having molecular formula $\text{C}_6\text{H}_6\text{O}$ gives a characteristic colour with aqueous… 2024 · 2 marks · Short answer
- How will the following be obtained? (Give chemical equation) Picric acid from Phenol Ethyl acetate from ethanol Anisole from… 2024 · 3 marks · Short answer
- How will the following be obtained? (Give chemical equation) Picric acid from phenol Ethanol from formaldehyde 2023 · 2 marks · Short answer
- Write the chemical equation for the following named organic reactions. Haloform reaction Reimer - Tiemann reaction Kolbe -… 2023 · 3 marks · Short answer
- Account for the following: Phenol is a stronger acid than aliphatic alcohols. Ethanol gives iodoform reaction whereas methanol… 2023 · 3 marks · Short answer
- How will the following be converted? (Give chemical equation) Ethyl bromide to ethyl isocyanide Aniline to benzene diazonium… 2023 · 3 marks · Short answer
- Match the following: 2023 · 4 marks · Match
- Fill in the blanks by choosing the appropriate word(s) from those given in the brackets: [two, Williamson’s synthesis, three… 2023 · 4 marks · Fill in
- Phenol is heated with alcoholic KOH and chloroform: What is the name of the reaction? What is the main product formed in this… 2022 · 2 marks · Short answer
- Give balanced chemical equations for the following reactions: (1) Phenol is treated with ice cold alkaline solution of benzene… 2020 · 5 marks · Short answer
- Write chemical equations to illustrate the following name reactions: (1) Williamson’s synthesis. (2) Esterification reaction (3)… 2020 · 5 marks · Short answer
- How will you obtain the following (give balanced chemical equations): Benzene from phenol. Iodoform from ethanol. 2019 · 2 marks · Short answer
- How will you obtain the following (give balanced chemical equations): Salicylaldehyde from phenol. Propan–2–ol from Grignard’s… 2019 · 2 marks · Short answer
- How will you obtain the following? (Give balanced equation.) Anisole from phenol. Ethyl acetate from ethanol. 2018 · 2 marks · Short answer
- How will you obtain the following? (Give balanced equation.) Picric acid from phenol. Ethyl chloride from diethyl ether. 2018 · 2 marks · Short answer
- How is phenol converted to benzoic acid? Explain with the help of balanced chemical equations. 2018 · 2 marks · Short answer
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