Assertion (A) Boiling points of alcohols and ethers are high.
Reason (R) They can form intermolecular hydrogen-bonding.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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 :Oxidation of alcohol with acidified potassium dichromate can be used for identification of alcohol. Reason: During oxidation with acidified potassium dichromate orange colour of K2Cr2O7 changes to blue.

The correct option is C Assertion is correct but Reason is incorrectOxidation of alcohol with acidified potassium dichromate can be used for identification of alcohol because during oxidation with acidified potassium dichromate orange colour of K2Cr2O7 changes to green.

Assertion :Oxidation of alcohol with acidified potassium dichromate can be used for identification of alcohol. Reason: During oxidation with acidified potassium dichromate orange colour of $K_{2} C r_{2} O_{7}$ changes to blue.

The correct option is C Assertion is correct but Reason is incorrect
Oxidation of alcohol with acidified potassium dichromate can be used for identification of alcohol because during oxidation with acidified potassium dichromate orange colour of $K_{2} C r_{2} O_{7}$ changes to green.