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Punjab (PTB) · Chapter test · Free

9th Class Chemistry Chapter 13 TestLaboratory and Practical Skills

30 marks · 40 minutes · 21 questions. Covers: CHAP 13: Laboratory and Practical Skills.

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9th Class Chemistry Chapter 13 Test

9th 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. What does reactive mean in context of chemical hazards?

    1. Likely to cause cancer

    2. Capable of dissolving other substance

    3. Emitting harmful radiation

    4. None of these

  2. Chemicals should be stored:

    1. In any container

    2. With properly labelled

    3. In direct sunlight

    4. None of these

  3. Gamma rays cause the?

    1. External injuries

    2. Internal injuries 

    3. Organ damaged 

    4. None of these

  4. Example of self-reactive chemical:

    1. Potassium

    2. Phenol

    3. Picric acid

    4. n-Hexane

  5. What does corrosive do?

    1. Heats

    2. Burns

    3. Freezes

    4. Evaporates

  6. X-ray produce ionizing radiation which can effect?

    1. Living tissue 

    2. Organ damaged 

    3. During inhalation 

    4. During Exhaled 

  7. Which items are used in personal protective equipment?

    1. Latex gloves

    2. Apron

    3. Protective glasses,face shield, boots

    4. Both B & C

  8. During an experimentation which vapours are formed?

    1. Water Vapours 

    2. Liquid Vapours 

    3. Toxic Vapours 

    4. None of these 

  9. Radioactive material that emit?

    1. Alpha particle 

    2. Beta particle 

    3. Both A & B

    4. Gamma rays

  10. What is lab coat for?

    1. Style

    2. Protection

    3. Warmth

    4. Comfort

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

  1. Define PPE?

  2. What type of safety precautions ae adopted to avoid damage due to explosive chemicals?

  3. Why sudden shock can cause some chemicals  to explode?

  4. Indicate two such safety instructions which are required to avoid radiation.

  5. How much quantity required for Reactive chemical experiment?

  6. What precautions should be taken before disposing of laboratory waste in drains?

  7. What type of reactions should be carried out in fume cupboard?

  8. Which items are used in personal protective equipment?

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

  1. What are flammable and explosive chemicals? Describe the safety instructions for handling hazardous chemicals in laboratory.

  2. Write down five such common safety instructions which are used to avoid all types of hazards.

  3. Explain the importance of warning signs and symbols to avoid any accident in the lab.