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Chemistry

Chemistry
Which one element has the lowest electronegativity value

Radium
Francium
Chlorine
Fluorine

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Chemistry
Which one of the following elements is least likely to be found in commercial fertilisers?

Silicon
Phosphorous
Potassium
Nitrogen

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Chemistry
What is a mixture of potassium nitrate, powdered charcoal and sulphur called?

Cement
Paint
Gun powder
Glass

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Chemistry
Which of the following is used as a preservative to protect processed food?

BHT
Sodium sulphate
Saccharin
Sodium metabisulphite

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Chemistry
Supersonic jet causes pollution by thinning of

O 2 layer
O3 layer
SO2 layer
CO2 layer

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Chemistry
Which one of the following nonmetals shows allotropy in the liquid state?

Sulphur
Phosphorous
Carbon
Bromine

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MORE MCQ ON Chemistry

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