Home
Class 12
CHEMISTRY
A flux is often added to remove impurit...

A flux is often added to remove impurities from a concentrated ore. In the reaction
`CaO + SiO_(2) rarr CaSiO_(3)`
the slag and the flux are

A

`SiO_(2) and CaSiO_(3)`

B

`CaO and SiO_(2)`

C

`CaSiSO_(2) and CaO`

D

both `(1)` and `(3)`

Text Solution

Verified by Experts

The correct Answer is:
a
The ores even after concentration , contain some ganghue.To remove these gangue particle cortain substance are mixed to form a fushible ore which combite with the gangue to form a fusible meterial which is not solution in molten metal . The sulstances used are called fluxed and the fasible merterial formed during reduction process is called slag
Slag is usually lighly and thus on the surface of the moltes metal
`underset("acidic flux")(SiO_(2))+underset(("gangue"))underset("impurity")underset("basic")(CaO)tounderset("slag")(CaSiO_(3))`
Flaxtes are classified as (i) acidic flox and (ii) basic , flex An acoidic flux siles bores etc is the chenical substans which removes the imparities.

The basic flax (e.g. line limestrons ,magnetics ferric oxide, atc) is the chemecal substance which removes the acide imurites
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPALS AND ISOLATION OF ELEMENTS

    R SHARMA|Exercise Flow up (Test - 4)|18 Videos

  • GENERAL PRINCIPALS AND ISOLATION OF ELEMENTS

    R SHARMA|Exercise Flow up (Test - 5)|6 Videos

  • GENERAL PRINCIPALS AND ISOLATION OF ELEMENTS

    R SHARMA|Exercise Flow up (Test - 2)|6 Videos

  • ELECTROCHEMISTRY

    R SHARMA|Exercise Follow-up Test 11|7 Videos

  • NEET PREVIOUS PAPER

    R SHARMA|Exercise Solved Question|51 Videos

Similar Questions

Explore conceptually related problems

Name the flux to remove the impurity of SiO_(2)

For the reaction, CaCO_(3)(s) rarr CaO(s)+CO_(2)(g) , which is the correct representation?

How mant reaction can show slag formation process from the given reaction ? (i) SiO_(2) + CaO rarr CaSiO_(3) (ii) FeO + SiO_(2) rarr FeSiO_(3) (iii) CaO + P_(2)O_(5) rarr Ca_(3)(PO_(4))_(2) (iv) Cr_(2)O_(3) + 2Al rarr Al_(2)O_(3) + 2Cr (v) MgCO_(3) + SiO_(2) rarr MgSiO_(3) + CO_(2) .

Balance the following chemical equations and identify the type of chemical reaction. CaO(s) +SiO_(2)(s) to CaSiO_(3)(s)

In coal, pyrites (FeS_(2)) is present as a pollution-causing impurity, which is removed by combustion. 2FeS_(2) + 5O_(2) rarr 4SO_(2) + 2FeO . A process designed to remove orgainc sulphur from coal prior to combustion involves the reaction. X - S - Y + 2NaOH rarr X - O - Y + Na_(2)S + H_(2) O CaCO_(3) rarr CaO + CO_(2) Na_(2)S + CO_(2) + H_(2)O rarr Na_(2) CO_(3) + H_(2) S CaO + H_(2)O rarr Ca (OH)_(2) Na_(2) CO_(3) + Ca(OH)_(2) rarr CaCO_(3) + 2NaOH In the processing in 320 metric tons of a coal having 1.0% sulphur content, how much limestone (CaCO_(3)) must be edecomposed to provied enough Ca (OH)_(2) to regenerate the NaOH used in the original leaching step?

Identity the endothermic and exothermic reaction. CaCO_(3(s)) overset(Delta)rarr CaO_((s))+CO_(2) uarr