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Chemistry

Chemistry
________ gives hardness to stainless steel.

Lead
Zinc
Carbon
Tin

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Chemistry
Cement is made hard with

Dehydration
Dissociation of water
Polymerisation
Hydration and dissociation of water

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Chemistry
Which colour is produce by Arsenic during flame test

Crimson
Blue
Green
Red

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Chemistry
Which one of the following is also known as solution ?

A homogeneous mixture
A suspension
A compound
A heterogeneous mixture

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Chemistry
Philosopher’s wool is chemically

Magnesium oxide
Calcium oxide
Zinc oxide
Aluminium oxide

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Chemistry
The metal present in vitamin B12 is

Mg
Fe
Mo
Co

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