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Chemistry

Chemistry
Which of the following is not a derivative of barbituric acid

Veronal
Amytal
Nembutal
Equanil

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Chemistry
Which of the following elements is not present in stainless steel?

Tungsten
Chromium
Nickel
Iron

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Chemistry
Which metal is the heaviest in periodic table among the following ?

Pb
W
Pt
Os

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Chemistry
Activated Charcoal is used to remove colouring matter from pure substances by

Reduction
Adsorption
Oxidation
Bleaching

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

Sulphur
Vanadium
Argon
Iodine

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Chemistry
The pH of lemon juice is expected to be

Nothing can be predicted
Equal to 7
Less than 7
More than 7

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