Which of the following are examples of a chemical reaction?

Conversion of steam to water

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Rusting of iron

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Cutting of wood

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All of the above

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Solution

The correct options are
B Rusting of iron
D All of the above
Rusting of iron is a chemical reaction. When iron rusts, it reacts with oxygen present in water or moisture in the air to create a new compound called iron(III) oxide (rust) which has properties entirely different from that of iron or oxygen. Also, the process is irreversible.

Similarly, burning of wood causes wood to be combusted, releasing smoke and heat.

Suggest Corrections

Similar questions

Which of the following are examples of chemical reactions?

i. Burning of wood

ii. Cutting of wood

iii. Conversion of steam to water

iv. Rusting of almirah

Which of the following are examples of chemical reactions?

i. Burning wood

ii. Cutting wood

iii. Conversion of steam to water

iv. Rusting of almirah

v. Dissolving common salt in water

i. Burning of wood

ii. Cutting of wood

iii. Conversion of steam to water

iv. Rusting of almirah

Classify the following as chemical or physical changes:

• Cutting of trees

• Melting of butter in a pan

• Rusting of almirah

• Boiling of water to form steam

• Passing of electric current through water, and water breaking down into hydrogen and oxygen gas

• Dissolving common salt in water

• Making a fruit salad with raw fruits

• Burning of paper and wood

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