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Punjab (PTB) · Chapter test · Free

2nd Year Chemistry Chapter 16 TestMEDICIEN, AGRICULTURE AND INDUSTRY

30 marks · 40 minutes · 21 questions. Covers: CHAP 32: MEDICIEN, AGRICULTURE AND INDUSTRY.

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2nd Year Chemistry Chapter 16 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 two gases primarily cause acid rain when released into the atmosphere?

    1. Carbon dioxide and Oxygen

    2. Sulphur oxides and Nitrogen oxides

    3. Hydrogen and Helium

    4. Ammonia and Methane

  2. Opiates trigger a neurochemical reaction specifically in which functional center of the brain?

    1. Auditory center

    2. Visual cortex

    3. Reward center

    4. Cerebellum coordination center

  3. Limestone is highly abundant in Sindh and the Salt Range, providing a source of:

    1. Sodium chloride

    2. Calcium carbonate for cement

    3. Pure elemental sulphur

    4. Methane gas

  4. What is the typical pH range of the highly acidic environment inside the stomach?

    1. 0.5–1.0

    2. 1.5–3.5

    3. 4.0–6.0

    4. 7.3–7.4

  5. What does the acronym PPE stand for in workplace safety guidelines?

    1. Primary Physical Elements

    2. Personal Protective Equipment

    3. Pipeline Protection Engineering

    4. Permanent Partial Exposure

  6. Which of the following groups contains only primary macronutrients needed in large quantities?

    1. Boron, Iron, and Nickel

    2. Nitrogen, Phosphorus, and Potassium

    3. Carbon, Hydrogen, and Oxygen

    4. Calcium, Magnesium, and Sulphur

  7. Which essential chemical process is highlighted in the introduction of the "Industry" section?

    1. Polymerization

    2. Osmoregulation

    3. Mutation

    4. Leaching

  8. The process that damages life in lakes and streams is termed:

    1. Dry deposition

    2. Water acidification

    3. Soil erosion

    4. Crop rotation

  9. Plastics, synthetic fibres, and synthetic rubber are primary products of the:

    1. Cement industry

    2. Petrochemical industry

    3. Cosmetics industry

    4. Food production industry

  10. The chemical industry is vital to Pakistan's economy because it contributes significantly to its:

    1. Soil erosion containment

    2. Gross Domestic Product (GDP) and jobs

    3. Atmospheric moisture balance

    4. Over-reliance on imports

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

  1. What are the severe health risks posed to humans by exposure to heavy pesticide residues?

  2. Define Therapeutic Index (TI) and write its mathematical expression.

  3. What are the two distinct mechanism stages targeted by antiviral medications?

  4. Write these significance of Therapeutic Window and how it differs from Therapeutic Index.

  5. Why has the cement industry of Pakistan grown into a leading exporter to neighboring regions?

  6. Define Hydrogenation in the context of the food processing industry.

  7. Identify two specific traits (e.g., heat tolerance, salt tolerance) that scientists aim to develop in new crop varieties to make them more resilient to climate change.

  8. Explain the distinct functions of Potassium (K) in plant systems.

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

  1. Write a note on various industrial chemical processes. Also account for the applications of these chemical industries in Pakistan.

  2. Describe the structure and mechanism of action of penicillin.

  3. What is Genetic Engineering? Give its main benefits and risks.