Chemistry - Study Mode

[#696] Which one of the following contains maximum percentage of carbon ?
Correct Answer

(A) Cast iron

Explanation

Solution: Cast iron has the maximum percentage of carbon.

[#697] Stainless steel is an alloy of
Correct Answer

(B) Chromium, carbon and iron

Explanation

Solution: Stainless steel is an alloy of chromium, carbon and iron.

[#698] Iron is extracted from
Correct Answer

(B) Haematite

Explanation

Solution: Iron is extracted from Haematite.

[#699] Which is the purest form of iron?
Correct Answer

(D) Wrought iron

Explanation

Solution: Wrought iron is purest form of iron. It contain 99.5% iron, 0.25% carbon and 0.25% other impurities of S, P, Si etc.

[#700] The degree of dissociation of an electrolyte depends on
Correct Answer

(A) Dilution

Explanation

Solution: The extent to which an electrolyte dissociates into ions is known as degree of dissociation or ionization and depends upon the following factors: (1) Nature of the electrolyte, (2) Temperature, (3) Dilution, (4) nature of the solvent, and (5) presence of other ions.