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Chemistry

Chemistry
The oil used in the froth floatation process is

pine oil
coconut oil
kerosene oil
olive oil

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Chemistry
The graphite rods in the nuclear reactor

convert fast moving neutrons into thermal neutrons
produce neutrons
react with U to release energy
undergo combustion which triggers the nuclear fission

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Chemistry
The first metal used by man was

iron
copper
bronze
gold

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Chemistry
The most important ore of aluminium is

monazite
bauxite
haematite
magnetite

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Chemistry
The hydronium ion is

H+
HO -
H2+
H3O+

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Chemistry
Which gas emitted by power stations causes acid rain?

Helium
Nitrogen
Carbon dioxide
Sulphur dioxide

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