Combustion and Flame-Fire [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 5 of 5
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Question 1
Question MCQ▾
A device used to stop fire is called:
Choices
Choice (4) | Response | |
---|---|---|
a. | Rapid combustion | |
b. | Sand bucket | |
c. | Ideal fuel | |
d. | Fire extinguisher |
Question 2
Question MCQ▾
Fire extinguishers used at airports and petrol pumps based on the principle of:
Choices
Choice (4) | Response | |
---|---|---|
a. | Smothering the fire | |
b. | Cooling the fire | |
c. | All of the above | |
d. | Question does not provide sufficient data or is vague |
Question 3
Question MCQ▾
Soda acid fire extinguisher based on the principle of:
Choices
Choice (4) | Response | |
---|---|---|
a. | Smothering the fire | |
b. | Cooling the fires | |
c. | Question does not provide sufficient data or is vague | |
d. | All of the above |
Question 4
Question MCQ▾
Types of fire that cannot be controlled by throwing water are:
Choices
Choice (4) | Response | |
---|---|---|
a. | Fire produced by burning of oil or petrol | |
b. | Fire produced by crackers | |
c. | Fire produced by electric short circuit | |
d. | Both a. and c. are correct |
Question 5
Question MCQ▾
Fire can be controlled by:
Choices
Choice (4) | Response | |
---|---|---|
a. | Presence of combustible substance | |
b. | If any of the condition require for combustion are not met then fire can be extinguished | |
c. | Presence of supporter of combustion (oxygen of air) | |
d. | Attainment of proper ignition temperature |