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प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron and rust are the same substances.
पर्याय
True
False
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उत्तर
This statement is False.
Explanation:
Iron is a metal, while rust is iron oxide, a compound formed when iron reacts with oxygen and moisture.
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संबंधित प्रश्न
Complete and balance the following chemical equations:
Ba`"CI"_2` + `"H"_2"SO"_4` `→`
(aq.) (aq.)
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TRUE \ FALSE
A precipitation reaction takes place only in a solution.
State four conditions necessary for chemical reactions to take place.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
Give a word equation for the following reaction.
Two gases which combine to give a solid.
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Complete the table given below.
| Addition of dil. H2SO4 to KHCO3 | Name of residue obtained |
Assertion: The formation of iron oxide from iron is a chemical change.
Reason: For the rust to form from iron, it must be exposed to air and water.
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- One side is water-loving and other water-hating molecules.
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- The dirt surrounded by the detergent molecules floats in the water making it dirty.
- Finally, the cloth is clean.
- The detergent molecules have two sides.
- Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules.
