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Chemistry

Chemistry
Which one is heaviest naturally-occurring element of the periodic element

Thorium
Iron
Rhodium
Uranium

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Chemistry
The important ore of aluminium is

Fluorspar
Bauxite
Cryolite
Haematite

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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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Chemistry
The element used for making solar cells is

Sodium
Silicon
Magnesium
Calcium

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Chemistry
Malathion is a/an

Fumigant
Pesticide
Preservative
Insecticide

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Chemistry
Which one is the naturally occuring heaviest element

Mercury
Protactinium
Thorium
Uranium

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MORE MCQ ON Chemistry

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