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प्रश्न
Give an example of a chemical reaction for each of the following situations:
Sound is produced
उत्तर
The burning of crackers produces a loud sound.
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संबंधित प्रश्न
Which metals do not corrode easily?
Give reasons:
Platinum, gold and silver are used to make jewellery.
Why is an iron grill painted frequently?
What is meant by 'rusting of iron'? With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
Explain how the activity series accounts for each of the following:
tendency to corrosion
Identify the process shown in the diagram and explain it in short
Write three methods of preventing rusting of iron.
Observe the following picture and answer the following questions:
- What is rust?
- Write the chemical formula of rust.
- Write the reaction of oxidation of iron at the anode.
- Write the reaction of oxidation of iron at the cathode.
- What is corrosion?
What is rust?
Give preventive methods by giving examples of corrosion?
