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Stainless steel contains

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Important Questions on Chemistry

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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 48
When metal is obtained in the molten state from its ore, the process may be called
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 50
Dead burnt is
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 53
Which of the following is not an ore?
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 54
In the metallurgy of iron, when CaCO3 is added to blast furnace, calcium ion appears as
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 55

Consider the following statements:

Roasting is carried out to:

(i) convert sulphide to oxide and sulphate

(ii) remove water of hydration

(iii) melt the ore

(iv) remove arsenic and sulphur impurities

Of these statements:

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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 56
Aluminium is more reactive than iron, but aluminium is less easily corroded than iron, because
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 57
Which one of the following metals is extracted through alloy formation?
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UPSC CAPF AC Paper - I
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14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 10>Q 58
Chemical leaching is useful in the concentration of :