Science Quiz 205

This is a timed quiz. You will be given 15 seconds per question. Are you ready?

15
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What will be the change when iron get rusted?

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The process employed to remove the magnetic impurities from the Ores is called:

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The mass number of an atom is:

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Which of the following is the chemical name of the lime stone?

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From which of the following ore, iron is extracted?

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To provide stern hardness which of the following is mixed up?

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The element radium was extracted from:

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The chemical utilized and employed as fixer in the photography is:

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Science Quiz 205
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