KCET SERIES Chemistry
Occurrence Of Metals
8 previous year questions.
Volume: 8 Ques
Yield: Medium
High-Yield Trend
2
2020 1
2018 1
2016 1
2011 2
2008 1
2004 Chapter Questions 8 MCQs
01
PYQ 2004
medium
chemistry ID: kcet-200
In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to :
1
dissolve bauxite and render it conductor of electricity
2
lower the melting point of bauxite
3
minimise the heat loss due to radiation
4
protect aluminium produced from oxygen
02
PYQ 2008
easy
chemistry ID: kcet-200
Mercury is a liquid metal because
03
PYQ 2008
medium
chemistry ID: kcet-200
Malleability and ductility of metals can be accounted due to
1
the presence of electrostatic force
2
the crystalline structure in metal
3
the capacity of layers of metal ions to slide over the other
4
the interaction of electrons with metal ions in the lattice
04
PYQ 2011
easy
chemistry ID: kcet-201
In chromite ore, the oxidation number of iron and chromium are respectively
1
+3, +2
2
+3, +6
3
+2, +6
4
+2, +3
05
PYQ 2016
medium
chemistry ID: kcet-201
The composition of ?copper matte? is,
1
2
3
4
06
PYQ 2018
medium
chemistry ID: kcet-201
The common impurity present in bauxite is
1
2
3
4
07
PYQ 2020
medium
chemistry ID: kcet-202
Silicon doped with gallium forms
1
P-type semiconductor
2
N-type semiconductor
3
Both n and p type semiconductor
4
an intrinsic semiconductor
08
PYQ 2020
medium
chemistry ID: kcet-202
A metal crystallises in face centred cubic structure with metallic radius 2A∘. The volume of the unit cell (in m3) is
1
6.4 x 10-30
2
4 x 10-10
3
6.4 x 10-29
4
4 x 10-9