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Chemistry

Chemistry
Of the following, which one pollutes the air of a big city ?

Cadmium
Copper
Lead
Chromium

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Chemistry
The most important ore of aluminium is

bauxite
monazite
magnetite
haematite

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Chemistry
Which of the following metals has least melting point ?

Silver
Gold
Mercury
Copper

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Chemistry
Soldering of two metals is possible because of the property of :

Surface tension
Cohesion
Osmosis
Viscosity

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Chemistry
Black lung disease occurs in people working in

Electroplating industry
Paint manufacturing industry
Organic solvents industry
Coal mines

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Chemistry
The first metal used by man was

iron
gold
bronze
copper

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MORE MCQ ON Chemistry

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