Question

Fill in the blanks using the words given in the box.ignition, petrol, combustion, calorific value,combustible, inflammable(a) A chemical process in which a substance reacts with oxygento give off heat is called __________.(b) Wood, paper, CNG are __________ substances.(c) The lowest temperature at which a substance catches fire iscalled its __________ temperature.(d) Ignition temperature of __________ is lower than that of wood.(e) The substances which have very low __________ temperatureand can easily catch fire with a flame are called __________substances.(f) The amount of heat energy produced on complete combustionof 1kg of a fuel is called its __________.NCERT Class VIIIScience - Exemplar ProblemsChapter 6. Combustion and Flame

Answer 1

A.Combustion
B.Combustible substances
C.lgnition temperature
D.Petrol
E.lgnition temperature,combustible substances
F.Calorific value

Answer 2

Answer:

a)combustion

b)combustible

c)ignition

d)petrol

e)ignition temperature,combustible substance

f)calorific value

Explanation: