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Chemistry

Chemistry
A thick paste of cement, sand and water is called

R.C.C.
Kiln
Concrete
Mortar

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Chemistry
The iron ore magnetite consists of

3Fe2O3 .. 3H2O
Fe2O3
FeCO3
Fe3OH4

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Chemistry
Higher concentration of nitrogen dioxide in atmosphere air causes

Bronchitis
Corrosion
Asphyxiation
Cancer

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Chemistry
The 'solid waste' is also known as

Toxic waste
Sedge
Sludge
Scrubber

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Chemistry
Saline soil contains

None of these
High concentration of salt
Hard rocks
Lot of moisture

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Chemistry
Which one of the following acids is used in battery ?

Hydrofluoric acid
Sulphuric acid
Sulphurous acid
Hydrochloric acid

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