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Chemistry

Chemistry
Sea weeds are important source of

Chlorine
Iodine
Bromine
Iron

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Chemistry
Mark the compound which possess ionic, covalent and coordinate bonds.

SO2
SO3
NH4Cl
H2O

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Chemistry
The oil used in the froth floatation process is

kerosene oil
coconut oil
olive oil
pine oil

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Chemistry
Dry powder fire extinguishers contain

Sand and potassium carbonate
Sand
Sand and sodium bicarbonate
Sand and sodium carbonate

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Chemistry
Which of the following type of coal has the lowest proportion of volatile matter ?

Peat
Anthracite
Bituminous
Lignite

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Chemistry
Which one element has the lowest electronegativity value

Fluorine
Francium
Radium
Chlorine

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