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प्रश्न
A man painted his main gate made up of iron, to
- prevent it from rusting.
- protect it from sun.
- make it look beautiful.
- make it dust free.
Which of the above statement(s) is/are correct?
विकल्प
(i) and (ii)
(ii) and (iii)
only (ii)
(i) and (iii)
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उत्तर
(i) and (iii)
Explanation:
Painting can prevent rusting and the objects look more beautiful.
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संबंधित प्रश्न
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.
A common metal which is highly resistant to corrosion is:
(a) iron
(b) copper
(c) aluminium
(d) magnesium
Bronze is an alloy of ______.
State under what conditions corrosion is faster ?
What is ‘rusting’?
Give reason.
Copper and brass utensils should be tinned.
State whether the statement given below is true or false. If false write the correct statement.
Graphite is a lustrous non-metal which conducts electricity.
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 an example of a chemical reaction for the following situation:
Sound is produced
