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Chemistry

Chemistry
Which one is the most reactive halogen

Bromine
Fluorine
Chlorine
Iodine

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Chemistry
Which one of the following organic compound is used to remove stains of iron compounds?

Cinnamic acid
Benzoic acid
Oxalic acid
Phthalic acid

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Chemistry
Which of the following elements is obtained from sea weeds ?

Argon
Vanadium
Iodine
Sulphur

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Chemistry
Alum stops bleeding in minor cuts because of

Dialysis
Coagulation
Emulsion
Solvation

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.18
0.25
0.27
0.305

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Chemistry
Which of the following chemicals is used in photography ?

Potassium nitrate
Silver bromide
Sodium chloride
Aluminium hydroxide

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