In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices.
(a) Both assertion and reason are true and reason is the coreect explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
(e) Assertion and reason both are wrong.
Assertion (A) Sulphide ores are concentrated by froth flottion method.
Reason (R) Cresols stabilise the froth in froth floatation method.

Open in App

Solution

(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
Sulphide ores are concentrated by froth floatation method. Sulphide ore particles are preferentially wetted by oil, become lighter and rise to the surface along with the froth while gangue particles are preferentially wetted by water, become heavier and thus settle down at the bottom of the tank and cresols stabilise the froth in froth floatation method.
Formation of froth is main reason for extraction of metal. Metal ore comes out along with froth.

Suggest Corrections

Similar questions

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices.
(a) Both assertion and reason are true and reason is the coreect explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
(e) Assertion and reason both are wrong.
Assertion (A) Zirconium can be purified by van Arkel method.
Reason $(R) Z r I_{4}$ is volatile and decomposes at 1800K.

n the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices.
(a) Both assertion and reason are true and reason is the coreect explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
(e) Assertion and reason both are wrong.
Assertion (A) Hydrometallurgy involves dissolving the ore in a stuitable reagent followed by precipitation by a more electropositive metal
Reason (R) Copper is extracted by hydropetallurgy.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices.
(a) Both assertion and reason are true and reason is the coreect explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
(e) Assertion and reason both are wrong.
Assertion (A) Nickel can be purified by Mond's process.
Reason (R) Ni $(C O)_{4}$ is volatile compound which decomposes at 460 K to give pure Ni.

In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are true, reason is correct explanation of assertion.
(b) Assertion and reason both are true but reason is not the correct explanation of assertion.
(c) Assertion is true, reason is false.
(d) Assertion is false, reason is true.

Assertion (A) Toxic metal ions are removed by the chelating ligands.
Reason (R) Chelate complexes tend to be more stable.

In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are true, reason is correct explanation of assertion.
(b) Assertion and reason both are true but reason is not the correct explanation of assertion.
(c) Assertion is true, reason is false.
(d) Assertion is false, reason is true.

Assertion (A) Linkage isomerism arises in coordination compounds containing ambidentate ligand.
Reason (R) Ambidentate ligand has two different donor atoms.

Join BYJU'S Learning Program