Question

Geeta marked the statements about fire extinguishers given by her teacher as true or false. Which of these statements are marked incorrectly by her?

• A. None of these
• B. 2 and 4 only
• C. 1 and 4 only
• D. 1 and 3 only

Answer 1

The correct option is D 1 and 3 only

• Water is an effective extinguisher but can not be used in all fire situations. Therefore, the statement given is false.
• Carbon dioxide fire extinguisher is suitable for fires involving electrical equipment. This is because, unlike water, carbon dioxide when used for extinguishing fire on electrical equipment does not conduct electricity. Therefore, the statement given is true.
• Carbon dioxide (CO2) extinguishers have black-coloured labels that contains CO2 in liquid form under extreme pressure. Therefore, the statement given is true.
• A fire extinguisher either cuts off the supply of air (Oxygen) or brings down the temperature of the fuel below the ignition temperature, or both. Therefore, the statement given is false.
• From the discussion we can conclude that statements 1 and 3 are marked incorrectly by Geeta.