Chemistry
Grade-8
Easy
Question
The respiration is the process in which human take________ from the surrounding.
- Heat
- Oxygen
- Electricity
- Carbon dioxide
Hint:
The gas given out by animals is taken in by plants.
The correct answer is: Oxygen
- Our lungs and respiratory system allow us to breathe. They take oxygen into our bodies (called inhalation ) and expel carbon dioxide (called exhalation).
- This exchange of oxygen and carbon dioxide is called respiration.
Related Questions to study
Chemistry
When calcium carbonate is heated around 1000℃, it decomposes into :
When calcium carbonate is heated around 1000℃, it decomposes into :
ChemistryGrade-8
Chemistry
Which of the following element is used to make matchsticks?
Which of the following element is used to make matchsticks?
ChemistryGrade-8
Chemistry
Which of the following are considered as the endothermic reactions?
Which of the following are considered as the endothermic reactions?
ChemistryGrade-8
Chemistry
In the nuclear fission process:
In the nuclear fission process:
ChemistryGrade-8
Chemistry
Categorize the following process into the exothermic and endothermic reactions.
A. Splitting gas molecule
B. Baking bread
C. Mixing water with calcium oxide
D. Melting solid salts
E. Rusting of Iron
Categorize the following process into the exothermic and endothermic reactions.
A. Splitting gas molecule
B. Baking bread
C. Mixing water with calcium oxide
D. Melting solid salts
E. Rusting of Iron
ChemistryGrade-8
Chemistry
Neutralization reactions are exothermic reactions. The product obtained in the neutralization reactions are:
Neutralization reactions are exothermic reactions. The product obtained in the neutralization reactions are:
ChemistryGrade-8
Chemistry
In the nuclear fission the element which is used for this process is:
In the nuclear fission the element which is used for this process is:
ChemistryGrade-8
Chemistry
Which of the following picture illustrates the exothermic reactions:
Which of the following picture illustrates the exothermic reactions:
ChemistryGrade-8
Chemistry
Everyday uses of exothermic reactions includes:
(i) Self-heating cans - 
(ii) Sport injury pack - 
(iii) Burning of petrol - 
(iv) Melting solid salts - 
Everyday uses of exothermic reactions includes:
(i) Self-heating cans -
(ii) Sport injury pack -
(iii) Burning of petrol -
(iv) Melting solid salts -
ChemistryGrade-8
Chemistry
Match the column A (Process) with Column B(Reactants used in process)
Match the column A (Process) with Column B(Reactants used in process)
ChemistryGrade-8
Chemistry
What type of reaction is respiration ?
What type of reaction is respiration ?
ChemistryGrade-8
Chemistry
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 :
ChemistryGrade-8
Chemistry
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.
ChemistryGrade-8
Chemistry
Evaporation is a type of process which a substance directly changes from :
Evaporation is a type of process which a substance directly changes from :
ChemistryGrade-8
Chemistry
Exothermic reaction are the reaction that releases :
Exothermic reaction are the reaction that releases :
ChemistryGrade-8
