Question
What type of reaction is respiration ?
- Reduction rection
- Neutralization reaction
- Exothermic reaction
- Addition reaction
Hint:
Heat is given out in exothermic reactions.
The correct answer is: Exothermic reaction
- Breathing is an exothermic process.
- During respiration, the glucose molecule is converted into many other molecules and finally, it produces CO2 and H2O. The C=O and O-H bonds in the products are much more stable than the bonds in the reactants and are therefore exothermic.
Related Questions to study
During the photosynthesis process plants prepare their own food by using sunlight and :
During the photosynthesis process plants prepare their own food by using sunlight and :
The _________ reaction is one of that absorb the heat energy from the surrounding.
The _________ reaction is one of that absorb the heat energy from the surrounding.
Evaporation is a type of process which a substance directly changes from :
Evaporation is a type of process which a substance directly changes from :
Exothermic reaction are the reaction that releases :
Exothermic reaction are the reaction that releases :
Endothermic reaction are always:
Endothermic reaction are always:
__________ is the chemical process in which substance combines with oxygen to gives off heat.
__________ is the chemical process in which substance combines with oxygen to gives off heat.
In the endothermic reaction temperature of surrounding keeps _______.
In the endothermic reaction temperature of surrounding keeps _______.
A sample of acid and alkali reacts together. The temperature increases by 25℃. The nature of this reaction is:
A sample of acid and alkali reacts together. The temperature increases by 25℃. The nature of this reaction is:
Which of the following picture depict the exothermic reaction?
Which of the following picture depict the exothermic reaction?
Which of the following Reaction that gives out the energy to the surrounding?
Which of the following Reaction that gives out the energy to the surrounding?
In an exothermic reaction, energy of the product is_____ with respect to the energy of reactant.
In an exothermic reaction, energy of the product is_____ with respect to the energy of reactant.
The substance changes its shape, size, and color is one of the properties of physical change
A usually reversible change in the physical properties of a substance, as size or shape or colour is known as physical change.
The substance changes its shape, size, and color is one of the properties of physical change
A usually reversible change in the physical properties of a substance, as size or shape or colour is known as physical change.
The curdling of milk is where lumps are formed in the milk.
lumps are formed when milk curdles.
The curdling of milk is where lumps are formed in the milk.
lumps are formed when milk curdles.
burning is the example of irreversible change.
Curdling is the example of chemical change, in which milk forms lumps.
Rusting is the process where iron changes its colour to reddish brown colour.
Digestion is the change where the substance goes into the stomach and breaks down into simpler substances.
burning is the example of irreversible change.
Curdling is the example of chemical change, in which milk forms lumps.
Rusting is the process where iron changes its colour to reddish brown colour.
Digestion is the change where the substance goes into the stomach and breaks down into simpler substances.
Which of the following is not an example of chemical change?
chopping of vegetables is an example of physical change
Which of the following is not an example of chemical change?
chopping of vegetables is an example of physical change
