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Chemistry

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

Iron
Chromium
Tungsten
Nickel

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Chemistry
The metal used for making aircrafts and rockets is

Copper
Lead
Nickel
Aluminium

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Chemistry
The items amenable to detection by soft x-rays are

lead in bullets
narcotics
genuine coins from counterfeit coins
contrabands

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Chemistry
Bayer's reagent is

Hydrogen peroxide
Acidified potassium permanganate
Bromine water
Alkaline potassium permanganate

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Chemistry
The manufacturing of iron from iron ore involves the process of

Oxidation
Fractional distillation
Electrolysis
Reduction

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Chemistry
24 carat of diamond is equal to

95% mg
91% gold
200 mg
200 g

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