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What is the pH level of blood of a normal person?

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Important Questions on Chemistry

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What are rubies and sapphires chemically known as?
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Which one of the following is also called stranger gas?
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Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
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Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
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Who among the following discovered heavy water?
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What is Bisphenol A (BPA)?
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Which one of the following is used as an explosive?
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Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human
body decreases. What causes this condition?