This chapter is currently out of syllabus
1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The metal oxide which cannot be reduced to metal by carbon is
A
Al2O3
B
PbO
C
ZnO
D
Fe2O3
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Roasting of sulphides gives the gas X as a byproduct. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agent and its acid has never been isolated. The gas X is
A
CO2
B
SO3
C
H2S
D
SO2
3
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.
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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