Solve this:
Q6. Which of the following is inflammable substances? a. Petrol b. wood c. Paper d. Straw
Q7. Fire extinguisher-a. Cut off the supply of air b. Bring down the temperature of fuel c. Both (a) &(b) d. None of these
Q8. Rapid combustion is a. When gas burns, it produces heat and light b. When material suddenly burst into flames c. When there is evolution of heat d. None of these
Q9. Substance which vaporise during Burning gives a. Sound b. Flame c. Combustion d. None of these
Q10. Unburnt carbon particles causes a. Stomach infections b. Respiratory problems c. Brain infections d. Throat problems
Dear student,
Q6. The substances which catches fire very easily are called inflammable substance . Petrol is an inflammable substance. Option a is correct
Q7. Option c is correct. Fire extinguisher bring down the temperature and also cutoff the supply of the air.
Q8.Rapid combustion produces both heat and light. Option a is correct.
Q9. It produces flame. Option b is correct.
Q10. Respiratory problems. b is the correct answer.
Regards
Q6. The substances which catches fire very easily are called inflammable substance . Petrol is an inflammable substance. Option a is correct
Q7. Option c is correct. Fire extinguisher bring down the temperature and also cutoff the supply of the air.
Q8.Rapid combustion produces both heat and light. Option a is correct.
Q9. It produces flame. Option b is correct.
Q10. Respiratory problems. b is the correct answer.
Regards