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Chemistry

Chemistry
The important ore of aluminium is

Fluorspar
Cryolite
Haematite
Bauxite

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Chemistry
Which of the following is biodegradable ?

Paper
D.T.
Aluminium
Plastic

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Chemistry
Which of the following in automobile exhaust can cause cancer?

Lead
Oxides of nitrogen
Polyclinic hydrocarbons
Carbon monoxide

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Chemistry
The elements in the modern Periodic table are arranged according to their

Neutron number
Atomic number
Mass number
Atomic Weight

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Chemistry
Cloud is a colloidal dispersion of

Air in a dispersion medium of water
Mist in a dispersion medium of air
Fog in a dispersion medium of water
Water drops in a dispersion medium of air

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Chemistry
Suspension particles have the size between

10–2 – 10–4 cm
10–1 – 10–2 cm
10–5 – 10–7cm
10–8 – 10–10cm

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