(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

electrons.

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Assertion :Dielectric materials can be solids, liquids, or gases. Reason: Usage of dielectric depends on the application i.e.Industrial coatings such as parylene provide a dielectric barrier between the substrate and its environment.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for AssertionDielectrics are non conducting substance. They are insulating material and bad conductor of electricity. Examples are mica, plastics, metal oxides, etc.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Dielectrics are non conducting substance. They are insulating material and bad conductor of electricity. Examples are mica, plastics, metal oxides, etc.