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10Exothermic reactions release heat.
Endothermic reactions absorb heat.
Mixing calcium oxide with water produces heat.
Cooking food is an exothermic reaction.
Combustion of fuel is an example of exothermic reaction.
In an endothermic reaction, temperature of surroundings decreases.
Neutralization of NaOH and HCl produces heat.
Photosynthesis is an exothermic reaction.
When lime is added to water, the container becomes hot.
All chemical reactions release heat.
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We can catch substance A and B easily if we keep them in individual test tubes but when these two substances are mixed in a test tube, we cannot catch it due to excessive heating. What is the reason for it?
Which of the following is an exothermic reaction?
Which reaction absorbs heat?
When CaO reacts with water, the reaction becomes:
Cooking food mainly involves:
NaOH + HCl → NaCl + H₂O + Heat is:
In an endothermic reaction, heat is:
Which of the following requires heat?
Burning of LPG in kitchen is:
If a reaction makes the container cold, it is:
A reaction that releases heat is called ______ reaction.
A reaction that absorbs heat is called ______ reaction.
CaO + H₂O → Ca(OH)₂ + ______ is an exothermic reaction.
Cooking food is an example of ______ reaction.
Combustion of carbon produces ______ and heat.
When sodium hydroxide reacts with hydrochloric acid, ______ is produced.
In an endothermic reaction, heat is ______ from surroundings.
In an exothermic reaction, heat is ______ to surroundings.
The reaction CaCO₃ → CaO + CO₂ requires ______.
Burning of gas is a ______ reaction.