Download App

Combustion and Flame — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame1 Mark
MCQ
Consider the following statements, choose the incorrect one:
  • A
    The forest fires occur during the hottest summer day.
  • ✓
    It is very difficult to burn a heap of dry leaves.
  • C
    The head of matchstick contains only antimony tri-sulphide and potassium chlorate.
  • D
    All the above.
✓

Answer

Correct option: B.
It is very difficult to burn a heap of dry leaves.
It is very easy to burn a heap of dry leaves. We know that it is difficult to burn a heap of green leaves. The green leaves contain a lot of water. This water does not allow the green leaves to get heated to their ignition temperature easily and makes the burning of green leaves difficult. On the other hand, dry leaves do not contain water, they get heated to their ignition temperature easily and hence can catch fire easily.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [I MARKS]" from Combustion and Flame→Combustion and Flame — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Destructive distillation of coal is done to produce:
→
How does the pressure exerted by a liquid change?
→
Which of the following are required essentially for producing fire?
→
Which of the following is not a planet?
→
Myopia can be corrected by using a
→
If the angle of incidence of light falling on a plane mirror is 30degree, what will be the angle of reflection$?$
→
Which gas is used in fire extinguishers?
→
The magnetic effect of an electric current generates a magnetic field around the current-carrying coil of a metallic wire
→
Silos are used for:
→
Which one of the following is a petrochemical?
→