Mega test 2 revision

A. Multiple Choice Questions (MCQs)

  1. Which of the following is a correct sitting posture while working on a computer?
    a) Bending forward
    b) Sitting straight with back support
    c) Sitting on the edge of the chair
    d) Lying on the chair

  2. Which health problem is caused due to long hours of computer use?
    a) Fever
    b) Eye strain
    c) Tooth decay
    d) Hearing loss

  3. What should be the ideal distance between eyes and computer screen?
    a) 10–15 cm
    b) 20–30 cm
    c) 50–70 cm
    d) More than 1 meter

  4. Which device helps protect against electric shock?
    a) Stabilizer
    b) UPS
    c) Earthing
    d) Extension board

  5. Which type of fire extinguisher is used for electrical fires?
    a) Water
    b) Foam
    c) CO₂
    d) Sand

  6. Which of the following is a good habit while using a computer?
    a) Eating food near the keyboard
    b) Taking regular breaks
    c) Working continuously for hours
    d) Sitting in a dark room

  7. What does PPE stand for?
    a) Personal Power Equipment
    b) Protective Personal Element
    c) Personal Protective Equipment
    d) Primary Protection Equipment

  8. Which symbol indicates a toxic substance?
    a) Flame
    b) Skull and crossbones
    c) Recycling symbol
    d) Green tick

  9. Which practice helps in maintaining a safe environment?
    a) Wasting electricity
    b) Reusing and recycling
    c) Burning plastic
    d) Throwing e-waste in open areas

  10. What is e-waste?
    a) Food waste
    b) Plastic waste
    c) Electronic waste
    d) Medical waste

B. Short Answer Questions (2–3 Marks)

  1. What is ergonomics?

  2. List any two health hazards related to computer usage.

  3. What is the importance of proper lighting in a computer lab?

  4. What is PPE? Name any two examples.

  5. What is e-waste?

  6. Mention two ways to reduce eye strain while working on a computer.

  7. What is the role of earthing in electrical safety?

  8. What are safety signs?

  9. Write any two causes of accidents in a computer lab.

  10. What is the importance of taking breaks during computer work?

  11. What do you mean by a safe working environment?

  12. List two advantages of recycling electronic waste.

  13. What is fire safety?

  14. What is meant by proper posture?

  15. Name any two environmental protection practices.

C. Long Answer Questions (4–5 Marks)

  1. Explain common health problems caused by improper computer usage.

  2. Describe correct sitting posture while working on a computer.

  3. Explain different types of safety hazards in a computer lab.

  4. What is PPE? Explain its importance with examples.

  5. Explain fire safety measures to be followed in a computer lab.

  6. Describe the importance of ergonomics in the workplace.

  7. Explain the concept of e-waste management.

  8. How can we create a safe and healthy working environment?

  9. Explain the impact of improper disposal of electronic waste on the environment.

  10. Describe various safety signs used in laboratories and workplaces.

Answers

A. Multiple Choice Questions (MCQs) with Answers

  1. Which of the following is a correct sitting posture while working on a computer?
    Answer: b) Sitting straight with back support

  2. Which health problem is caused due to long hours of computer use?
    Answer: b) Eye strain

  3. What should be the ideal distance between eyes and computer screen?
    Answer: c) 50–70 cm

  4. Which device helps protect against electric shock?
    Answer: c) Earthing

  5. Which type of fire extinguisher is used for electrical fires?
    Answer: c) CO₂

  6. Which of the following is a good habit while using a computer?
    Answer: b) Taking regular breaks

  7. What does PPE stand for?
    Answer: c) Personal Protective Equipment

  8. Which symbol indicates a toxic substance?
    Answer: b) Skull and crossbones

  9. Which practice helps in maintaining a safe environment?
    Answer: b) Reusing and recycling

  10. What is e-waste?
    Answer: c) Electronic waste

B. Short Answer Questions with Answers (2–3 Marks)

  1. What is ergonomics?
    Ergonomics is the study of designing the workplace to suit the user’s comfort, health, and efficiency.

  2. List any two health hazards related to computer usage.
    Eye strain and back pain.

  3. What is the importance of proper lighting in a computer lab?
    Proper lighting reduces eye strain, headaches, and improves visibility.

  4. What is PPE? Name any two examples.
    PPE stands for Personal Protective Equipment.
    Examples: gloves, safety goggles.

  5. What is e-waste?
    E-waste refers to discarded electronic devices like computers, mobiles, and printers.

  6. Mention two ways to reduce eye strain while working on a computer.
    Taking regular breaks and maintaining proper screen distance.

  7. What is the role of earthing in electrical safety?
    Earthing prevents electric shock by safely transferring excess current to the ground.

  8. What are safety signs?
    Safety signs are symbols or signs that provide information about hazards and safety measures.

  9. Write any two causes of accidents in a computer lab.
    Loose wires and liquid spills near electrical equipment.

  10. What is the importance of taking breaks during computer work?
    Breaks reduce fatigue, eye strain, and muscle pain.

  11. What do you mean by a safe working environment?
    A workplace free from hazards that ensures health, safety, and comfort.

  12. List two advantages of recycling electronic waste.
    Reduces pollution and conserves natural resources.

  13. What is fire safety?
    Fire safety refers to measures taken to prevent fire and reduce damage caused by fire.

  14. What is meant by proper posture?
    Proper posture means sitting straight with correct alignment of body parts.

  15. Name any two environmental protection practices.
    Recycling and saving electricity.

C. Long Answer Questions with Answers (4–5 Marks)

  1. Explain common health problems caused by improper computer usage.
    Improper computer usage can cause eye strain, headaches, back pain, neck pain, and repetitive strain injury. These problems occur due to poor posture, improper lighting, long working hours, and lack of breaks.

  2. Describe correct sitting posture while working on a computer.
    The back should be straight and supported by the chair. Feet should rest flat on the floor. The screen should be at eye level and at a distance of about 50–70 cm. Hands should be relaxed while typing.

  3. Explain different types of safety hazards in a computer lab.
    Safety hazards include electrical hazards like exposed wires, physical hazards like cluttered floors, fire hazards due to overheating equipment, and health hazards due to improper posture.

  4. What is PPE? Explain its importance with examples.
    PPE stands for Personal Protective Equipment. It protects users from injuries and health risks. Examples include gloves for electrical work, masks to avoid dust, and goggles to protect eyes.

  5. Explain fire safety measures to be followed in a computer lab.
    Electrical equipment should be maintained properly. Overloading sockets must be avoided. CO₂ fire extinguishers should be available. Emergency exits should be clearly marked.

  6. Describe the importance of ergonomics in the workplace.
    Ergonomics improves comfort, reduces health problems, increases productivity, and prevents long-term injuries.

  7. Explain the concept of e-waste management.
    E-waste management involves proper collection, recycling, and disposal of electronic waste to reduce environmental pollution and health risks.

  8. How can we create a safe and healthy working environment?
    By maintaining cleanliness, using proper furniture, ensuring good lighting, following safety rules, and using PPE.

  9. Explain the impact of improper disposal of electronic waste on the environment.
    Improper disposal releases toxic substances that pollute soil, water, and air, causing health and environmental problems.

  10. Describe various safety signs used in laboratories and workplaces.
    Safety signs include warning signs (hazard), mandatory signs (safety rules), prohibition signs (do not enter), and emergency signs (exit routes).

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