21 A 21 B 22 A 22 B 23 24 25 26 27 28 29 30 31 32 33 34 35 36 A 36 B 37 38 A 38 B 39 40 41 42 43 44 45 46 47 48 49 50

Lakhmir Singh & Manjit Kaur - Science

6. Combustion and Flame

Very Short Answer Type Questions

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Short Answer Type Questions

21 A 21 B 22 A 22 B 23 24 25 26 27 28 29 30 31 32 33 34 35 36 A 36 B 37 38 A 38 B 39 40 41 42 43 44 45 46 47 48 49 50

Long Answer Type Questions

51 A 51 B 52 A 52 B 53 A 53 B 54 55

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Questions Based on High Order Thinking Skills (HOTS)

Q. 234.2( 47 Votes )

Can you burn a pi

Class 8th Lakhmir Singh & Manjit Kaur - Science 6. Combustion and Flame

Answer :

A matchstick can light a tiny splinter of wood but not a big log of wood. A splinter of wood has a low ignition temperature. A burning matchstick can produce sufficient heat to reach the ignition temperature of the splinter of wood therefore a matchstick can light a splinter of wood directly.

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