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Assertion :Rusting of iron is considered an oxidation reaction. Reason: Rust is another name for iron oxide which occurs when iron is exposed to oxygen and moisture for a long period of time. Overtime the oxygen combines with the metal at atomic level forming a compound called an oxide. Rust forms when iron undergoes oxidation. The main catalyst for the rusting process is water.
  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Both Assertion and Reason are incorrect

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are incorrect
C
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
D
Assertion is correct but Reason is incorrect
Solution
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Rust is another name for iron oxide which occurs when iron is exposed to oxygen and moisture for a long period of time. Overtime the oxygen combines with the metal at atomic level forming a compound called an oxide. Rust forms when iron undergoes oxidation. The main catalyst for the rusting process is water.

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Similar Questions
Q1
Assertion :Rusting of iron is considered an oxidation reaction. Reason: Rust is another name for iron oxide which occurs when iron is exposed to oxygen and moisture for a long period of time. Overtime the oxygen combines with the metal at atomic level forming a compound called an oxide. Rust forms when iron undergoes oxidation. The main catalyst for the rusting process is water.
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Q2
Assertion: The impurities such as SiO2 present in iron ore is removed by CaCO3.

Reason: CaO formed by decomposition of CaCO3 reacts with SiO2 to form slag.
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Q3

Assertion – The non-fusible impurities present in iron ore are removed by CaCO3 .

Reason: CaCO3 which decomposes into CaO and CO2. The CaO formed reacts with SiO2 to remove silica


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Q4
Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.
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Q5

Assertion

Lithium sulphate does not form alums.

Reason

Li+ is too small to form a stable lattice required for double-salt/alum formation.


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