1
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Sulphur trioxide can be obtained by which of the following reaction?
A
CaSO4 + C $$\buildrel \Delta \over \longrightarrow $$
B
Fe2(SO4)3 $$\buildrel \Delta \over \longrightarrow $$
C
S + H2SO4 $$\buildrel \Delta \over \longrightarrow $$
D
H2SO4 + PCl5 $$\buildrel \Delta \over \longrightarrow $$
2
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with
A
carbon monoxide
B
copper (I) sulphide
C
sulphur dioxide
D
iron (II) sulphide.
3
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of
A
Al2O3 + HF + NaAlF4
B
Al2O3 + CaF2 + NaAlF4
C
Al2O3 + Na3AlF6 + CaF2
D
Al2O3 + KF + Na3AlF6
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which one of the following is a mineral of iron?
A
Malachite
B
Cassiterite
C
Pyrolusite
D
Magnetite
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