SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are chemical reactions that absorb energy?
A
endothermic
B
fast
C
slow
D
exothermic
Explanation: 

Detailed explanation-1: -An endothermic reaction is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur. A hallmark of this type of reaction is that it feels cold.

Detailed explanation-2: -Endothermic Process v/s Endothermic Reaction This is done through the process of sweating. The sweat (produced on the surface of the skin) absorbs heat from the skin to evaporate, thereby creating a cooling effect.

Detailed explanation-3: –Examples of endothermic reactions are: (A) Ice cubes melt into liquid by absorbing heat energy from the surroundings. (C) Formation of nitric oxide (NO) by reacting nitrogen with oxygen is also an endothermic reaction.

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