Skip to content
p.paperbanao.
Continue

Punjab (PTB) · Chapter test · Free

2nd Year Chemistry Chapter 6 TestHYDROXY COMPOUNDS

30 marks · 40 minutes · 21 questions. Covers: CHAP 22: HYDROXY COMPOUNDS.

Your school name

2nd Year Chemistry Chapter 6 Test

2nd Year · Chemistry · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Which one of the following does not represent an oxidation?

    1. Ethanal  ethanol

    2. Propan-1-ol propanal

    3. Propan-2-ol propanone

    4. Ethanol  ethanoic acid

  2. When molten phenol reacts vigorously with sodium metal (Na), the products are:

    1. Sodium phenoxide and hydrogen gas (H2)

    2. Sodium phenoxide and water

    3. Bromophenol and sodium chloride

    4. Benzene and sodium oxide

  3. Compared to benzene, nitration of phenol occurs under:

    1. Much harsher conditions requiring extreme heating

    2. Milder conditions (dilute acid at room temperature)

    3. High pressure conditions only

    4. The absolute absence of any solvent

  4. Oxidation of propan-2-ol yields which of the following organic compounds?

    1. Ethanal

    2. Propanone

    3. Propanal

    4. Ethene

  5. Acid-catalyzed or alkaline hydrolysis of an ester produces:

    1. An alkene and water

    2. An aldehyde and a ketone

    3. A carboxylic acid and an alcohol

    4. An ether and an alcohol

  6. An alkoxide ion is more likely to accept a proton (H+) because its oxygen atom has:

    1. Lower electron density

    2. Higher electron density

    3. Positive charge

    4. No charge

  7. Which substance will produce hydrogen gas earliest and most rapidly when reacted with a piece of sodium metal?

    1. Pure water

    2. Ethanol

    3. Phenol

    4. Methane

  8. The reagent for the chemical test used in distinguishing propan-1-ol and propan-2-ol.

    1. Br2 and NaOH

    2. I2 and NaOH

    3. Acidified K2Cr2O7

    4. NaOH(aq)

  9. Which of the following orders of acidity is correct?

    1. ethanol > water > phenol

    2. water > ethanol > phenol

    3. phenol > water > ethanol

    4. phenol > ethanol > water

  10. Phenol dissolves in alkaline solutions like sodium hydroxide (NaOH) to form:

    1. Phenyl ethanoate and hydrogen gas

    2. Benzene and water

    3. Sodium phenoxide and water

    4. Nitrophenol

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. 4-methylaniline reacts with HNO2(aq) at 4oC to form compound P. Compound P reacts with NaOH. The product of this reaction is compound Q. Draw the structure of compound P and Q.

  2. Define a tertiary (3o) alcohol

  3. Why 1-naphthol does not give substitution at position 9 and 10?

  4. What was phenol historically used to manufacture regarding hygiene products?

  5. How does a breathalyser device work chemically?

  6. Why does the reduction of carboxylic acids require 4[H] while aldehydes require only 2[H]?

  7. What chemical color transition confirms that a primary or secondary alcohol has been oxidized by dichromate ions?

  8. Name the two products formed when 1-naphthol reacts with bromine in the presence of ethanoic acid.

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Define alcohols and clarify how they are categorized.

  2. Explain the oxidation behavior of primary, secondary, and tertiary alcohols using acidified potassium dichromate(VI). Elaborate on how this reaction can be visually monitored and used as a diagnostic test.

  3. Describe any four methods for the preparation of ethanol.