Question 26 Fill in the blanks using the words given in the box. (a) A chemical process in which a substance reacts with oxygen to give off heat is called ___ (b) Wood, paper, CNG are ___ substances. (c) The lowest temperature at which a substance catches fire is called its ___ temperature. (d) Ignition temperature of ___ is lower than that of wood. (e) The substances which have very low ___ temperature and can easily catch fire with a flame are called ___ substances. (f) The amount of heat energy produced on complete combustion of 1kg of a fuel is called its ___.

Question 26 Fill in the blanks using the words given in the box. (a)

1.	Question 26 Fill in the blanks using the words given in the box. (a) A chemical process in which a substance reacts with oxygen to give off heat is called ___ (b) Wood, paper, CNG are ___ substances. (c) The lowest temperature at which a substance catches fire is called its ___ temperature. (d) Ignition temperature of ___ is lower than that of wood. (e) The substances which have very low ___ temperature and can easily catch fire with a flame are called ___ substances. (f) The amount of heat energy produced on complete combustion of 1kg of a fuel is called its ___.
Answer» Question 26 Fill in the blanks using the words given in the box. (a) A chemical process in which a substance reacts with oxygen to give off heat is called ___ (b) Wood, paper, CNG are ___ substances. (c) The lowest temperature at which a substance catches fire is called its ___ temperature. (d) Ignition temperature of ___ is lower than that of wood. (e) The substances which have very low ___ temperature and can easily catch fire with a flame are called ___ substances. (f) The amount of heat energy produced on complete combustion of 1kg of a fuel is called its ___.