Chemistry science quiz 22

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15
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Which of the following is used in pencils ?

Correct! Wrong!

Washing soda is the common name for?

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Chemical formula for water is?

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The filament of an electric bulb is made of?

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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is?

Correct! Wrong!

Carbon, diamond and graphite are together called?

Correct! Wrong!

Heavy water is?

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Tetraethyl lead is used as?

Correct! Wrong!

Chemistry science quiz 22
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