Metallurgy · Chemistry · AP EAPCET

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MCQ (Single Correct Answer)

1
The flux used in the preparation of wrought iron from cast iron in reverberatory furnace is
AP EAPCET 2024 - 21th May Evening Shift
2
The type of iron obtained from blast furnace in the extraction of iron is
AP EAPCET 2024 - 20th May Evening Shift
3

The reactions which occur in blast furnace at $500-800 \mathrm{~K}$ during extraction of iron from haematite are

i. $3 \mathrm{Fe}_2 \mathrm{O}_3+\mathrm{CO} \longrightarrow 2 \mathrm{Fe}_3 \mathrm{O}_4+\mathrm{CO}_2$

ii. $\mathrm{Fe}_2 \mathrm{O}_3+3 \mathrm{C} \longrightarrow 2 \mathrm{Fe}+3 \mathrm{CO}$

iii. $\mathrm{Fe}_3 \mathrm{O}_4+4 \mathrm{CO} \longrightarrow \mathrm{Fe}+4 \mathrm{CO}_2$

iv. $\mathrm{Fe}_2 \mathrm{O}_3+\mathrm{CO} \longrightarrow 2 \mathrm{FeO}+\mathrm{CO}_2$

AP EAPCET 2024 - 20th May Morning Shift
4
Lithium forms an alloy with ' $X$ '. This alloy is used to make armour plates. What is ' $X$ ' ?
AP EAPCET 2024 - 18th May Morning Shift
5
Which one of the following sets in not correctly matched?
AP EAPCET 2024 - 18th May Morning Shift
6

The two major constituents of Portland cement are

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7

A compound A is used in paints instead of salts of lead. Compound A is obtained when a white compound B is strongly heated. Compound B is insoluble in water but dissolves in NaOH solution forming a solution of compound C. The compound A on heating with coke gives a volatile metal D and a gas E which burns with a blue flame. Identify the possible species D and C can be respectively?

AP EAPCET 2021 - 19th August Morning Shift
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