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    Part B: Subject Specific Skills · Unit 4

    Maintain Healthy, Safe and Secure Work Environment

    Complete CBSE Class 10 IT (Code 402) textbook coverage for Occupational Health and Safety (OH&S): Workplace Hazards vs Risks, Office Ergonomics, Computer Vision Syndrome, PASS Fire Extinguisher operation, and Electrical Rescue protocols.

    High-Yield Exam Blueprint

    Key Concepts At A Glance (Unit 4 Cheat Sheet)

    Everything tested in CBSE Class 10 IT Board Examinations regarding OH&S policies, hazards vs risks, office ergonomics, and emergency drills:

    Hazard vs Risk

    Hazard: Anything with the potential to cause harm.
    Risk: Probability and severity of the hazard occurring in practice.

    Ergonomics Rule

    Distance: 20–30 inches (arm length).
    Top of screen: at/below eye level.
    Elbows: 100°–110°.
    Rule: 20-20-20 for eyes.

    PASS Fire Procedure

    Pull the pin.
    Aim at fire base.
    Squeeze the handle.
    Sweep side-to-side.
    IT/Server rooms: CO2 (Black).

    Electrical Shock Protocol

    NEVER touch victim directly.
    Cut power breaker immediately.
    Separate with dry wood/plastic.
    Call emergency 108 / 112.

    Chapter 13 Notes

    Understand the Concept of Workplace Safety

    Under the National Occupational Health and Safety (OH&S) Policy, every organization is legally and ethically bound to ensure safe working conditions that prevent occupational injuries, illnesses, and property loss.

    Categories of Workplace Hazards in IT Organizations

    1. Physical Hazards

    Slips and trips from loose Ethernet cables, uncleaned spills on tiles, and falling boxes from overhead storage.

    2. Electrical Hazards

    Daisy-chained extension strips, worn computer power cords, frayed server wiring, and overloaded outlets.

    3. Ergonomic Hazards

    Non-adjustable chairs, monitor glare, excessive keyboard typing without wrist rests, and awkward neck angles.

    4. Psychological Hazards

    Excessive overtime shifts, high workload pressure, lack of work-life balance, and chronic mental burnout.

    Workplace Security Measures in IT Facilities

    Access Control & ID Badges

    RFID smart cards or biometric fingerprint scanners to prevent unauthorized visitors entering server zones.

    CCTV & Visitor Registers

    24/7 video monitoring of entrances, data centers, and mandatory visitor log books signed at reception.

    Clean Desk & Screen Lock

    Locking workstations (Win + L) when stepping away and locking confidential documents in drawers.

    Board Exam Practice

    Unit 4 Solved MCQs (10 High-Yield Questions)

    Directly curated from curriculum chapter-end self-assessment exercises and CBSE sample papers.

    1

    What is the primary difference between a 'Hazard' and a 'Risk' in workplace occupational health?

    2

    What does the fire safety acronym 'PASS' stand for when operating a portable fire extinguisher?

    3

    Which type of fire extinguisher is most suitable and safest for electrical fires involving computers, servers, and electronic equipment?

    4

    What is 'Carpal Tunnel Syndrome' (CTS) commonly experienced by computer and data entry operators?

    5

    According to ergonomic guidelines, what is the ideal viewing distance between a computer operator's eyes and the monitor screen?

    6

    Which class of fire involves flammable liquids such as petrol, diesel, oil, paints, and solvents?

    7

    To prevent Computer Vision Syndrome (CVS) and digital eyestrain during prolonged screen work, doctors recommend the 20-20-20 rule. What does it prescribe?

    8

    What is the very FIRST step you must take if you witness a colleague suffering from an active electrical shock?

    9

    What is an 'Ergonomic' chair feature essential for preventing lower back pain in office workers?

    10

    Why should elevators/lifts NEVER be used during a building fire evacuation?

    CBSE Class 10 IT Viva & Theory

    Frequently Asked Board Questions (Workplace Safety Unit 4)

    Detailed model answers strictly formulated according to official CBSE marking criteria: