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Chemistry

Chemistry
The number of electrons presents in H+ is

two
zero
three
one

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Chemistry
Depletion of ozone layer causes

Skin cancer
Blood cancer
Breast cancer
Lung cancer

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Chemistry
Sour taste of ‘Coca Cola’ is due to the presence of

Phosphoric acid
Acetic acid
Hydrochloric acid
Formic acid

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Chemistry
Which of the following is not a nitrogenous fertilizer ?

CaCN2
Urea
Ca(CN)2
NH4NO3

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Chemistry
The iron ore magnetite consists of

FeCO3
3Fe2O3 .. 3H2O
Fe3OH4
Fe2O3

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Chemistry
The three elements most needed in common fertilisers are :

Sulphur, Phosphorous and Sodium
Nitrogen, Potassium and Phosphorous
Phosphorous, Sodium and Nitrogen
Calcium, Phosphorous and Potassium

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