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Chemistry

Chemistry
The important metal used with iron to produce stainless steel is

Tin
Aluminium
Carbon
Chromium

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Chemistry
Iron is extracted from

Bauxite
Haematite
Dolomite
Cinnabar

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Chemistry
What is the second largest component in milk ?

Water
Fat
Minerals
Sugar

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Chemistry
Milk is

Foam
Gel
Emulsion
Suspension

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Chemistry
A matured mammalian cell without nucleus is

Erythrocyte
Lymphocyte
Spermatozoan
Oocyte

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Chemistry
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

3 billion years
0.01 minute
100 years
13 days

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