NURSING ANM AND GNM

NURSING EXAM QUESTIONS

FUNDAMENTALS OF NURSING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these elements is NOT necessary to start a fire?
A
heat
B
oxygen
C
carbon dioxide
D
fuel
Explanation: 

Detailed explanation-1: -Carbon dioxide is not a supporter of combustion(burning). Hence, for combustion to take place, Carbon dioxide is not required. Was this answer helpful?

Detailed explanation-2: -Combustion (burning) is a chemical reaction in which a fuel reacts with an oxidant, usually oxygen, ordinarily producing both heat and light. In the absence of an oxidant, such as in pure carbon dioxide, combustion ceases.

Detailed explanation-3: -Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.

There is 1 question to complete.