Burning of coal and photosynthesis are examples of and reactions respectively.

exothermic

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endothermic

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double displacement

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displacement

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Solution

The correct options are
A exothermic
B endothermic
The exothermic reaction involves evolution of heat. Burning of coal is an example of exothermic reaction.

The endothermic reaction involves absorption of heat. Photosynthesis is an example of endothermic reaction.

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Similar questions

Q. (a) What do you understand by exothermic and endothermic reactions?
(b) Give one example of an exothermic reaction and one of an endothermic reaction.
(c) Which of the following are endothermic reactions and which are exothermic reactions?
(i) Burning of natural gas
(ii) Photosynthesis
(iii) Electrolysis of water
(iv) Respiration
(v) Decomposition of calcium carbonate

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Classify the following examples into physical or chemical change. [1 MARK]

1) Photosynthesis and burning of coal

2) Dissolving sugar in water and melting of wax

Q. Burning of coal is a combination reaction.

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Burning of coal and photosynthesis are examples of and reactions respectively.

The correct options are A exothermic B endothermicThe exothermic reaction involves evolution of heat. Burning of coal is an example of exothermic reaction. The endothermic reaction involves absorption of heat. Photosynthesis is an example of endothermic reaction.

The correct options are
A exothermic
B endothermic
The exothermic reaction involves evolution of heat. Burning of coal is an example of exothermic reaction.

The endothermic reaction involves absorption of heat. Photosynthesis is an example of endothermic reaction.