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Punjab (PTB) · Chapter test · Free

10th Class Chemistry Chapter 10 TestMONOHYDROXY ALKANES OR ALCOHOLS

30 marks · 40 minutes · 21 questions. Covers: CHAP 23: MONOHYDROXY ALKANES OR ALCOHOLS.

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10th Class Chemistry Chapter 10 Test

10th Class · 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 of the following is NOT one of the first four aliphatic alcohols used as fuel?

    1. Methanol

    2. Ethanol

    3. Propanol

    4. Pentanol

  2. In the hydration reaction, ethene reacts with:

    1. Liquid water

    2. Steam

    3. Ice

    4. All

  3. Which two alcohols are active ingredients in certain oral and topical drug products?

    1. Methanol & Ethanol

    2. Ethanol & Isopropanol

    3. Propanol & Butanol

    4. Methanol & Butanol

  4. What is the ideal temperature for the fermentation process to achieve the maximum yield?

  5. Hydration of ethene turns an unsaturated bond into a ......... compound:

    1. Saturated

    2. Acidic

    3. Basic

    4. Gaseous

  6. Alcohol which has the maximum heat of combustion is:

    1. CH3CH2CH2OH

    2. CH3CH2OH

    3. CH3OH

    4. CH3CH2CH2CH2OH

  7. How much heat is produced in the following reaction? 

    1. 1367kJ/mol

    2. 2017kJ/mol

    3. 726kJ/mol

    4. 2676kJ/mol

  8. Ethanol is widely used as a solvent in which daily life luxury product?

    1. Detergents

    2. Perfumes

    3. Soaps

    4. Hair oils

  9. Which property of ethanol makes it suitable for cleaning wounds?

    1. Good solvent

    2. Volatility

    3. Antiseptic

    4. Deodorizing

  10. Alcohols used as fuels are advantageous because they are obtained from:

    1. Non-renewable sources

    2. Renewable sources

    3. Deep ocean beds

    4. Volcanic rocks

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

  1. By what percentage can ethanol reduce greenhouse gas emissions compared to petrol?

  2. How does the purity of ethanol differ between the hydration of ethene and fermentation processes?

  3. Why does the amount of heat evolved during the burning of alcohols go on increasing from lower to higher alcohols?

  4. Why is bioalcohols considered "carbon netural"?

  5. Give two advantages of burning of alcohols over the burning of fossil fuel?

  6. How is ethanol used in the pharmaceutical industry?

  7. What is ethyl alcohol or ethanol?

  8. Why does butanol evolve a higher amount of heat than propanol when burnt in oxygen?

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

  1. Explain the combustion of alcohols.

  2. Explain why the amount of heat evolved  increases as you move from methanol to butanol in the homologous series.

  3. Discuss the applications of ethanol in the pharmaceutical industry.