Burning or combustion is an example of …….reaction.
a) decomposition
b) displacement
c) endothermic
d) exothermic
Which of the following is/are exothermic reaction?
a) CH4(g) + 2O2 ----à 2H2O(l) + heat + light
b) CH4(g) + 2O2(g)---à CO2(g) + 2H2O(l) + heat+ light
c) 2H2(g) + O2(g) ---à 2H2O(g) + heat + light
d) all of these
A chemical
reaction that absorbs energy from their surroundings is called……..reaction.
a) decomposition
b) displacement
c) endothermic
d) exothermic
Endothermic is
basically…….word.
a) Greek
b) Russian
c) English
d) Dutch
“Endo” is a Greek word which means?
a) to absorb
b) to evolve
c) release
d) to attract
Which lime stone is heated at 1000 C, it decomposes. What type of reaction this is?
a) addition
b) displacement
c) endothermic
d) exothermic
