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Chemistry

Chemistry
The important ore of aluminium is

Haematite
Fluorspar
Bauxite
Cryolite

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Chemistry
When a lead storage battery is discharged,

Lead is formed
Lead sulphate is consumed
SO2 is evolved
Sulphuric acid is consumed

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Chemistry
Which of the toxic heavy metals is found in modern tannery industries ?

Nickel
Lead
Chromium
Zinc

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Chemistry
Brine refers to :

Sweet water
Salt water
Pure water
Starch water

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Chemistry
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength

O+2
O-2
O-22
O2

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Chemistry
What is the product formed when sodium bicarbonate is heated strongly?

Sodium Monoxide
Sodium Carbonate
Sodium Peroxide
Sodium Hydroxide

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