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Chemistry
9. Hydrogen
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Q54 of 76 Page 118

Why is water molecule polar?

A polar molecule is a molecule that has a slight δ positive and a slight δ negative charge distribution. Due to the high electronegativity difference between oxygen and hydrogen atoms, polarity in a molecule arises.

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52

An acidic solution of hydrogen peroxide behaves as an oxidising as well as reducing agent. Illustrate it with the help of a chemical equation.

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With the help of suitable examples, explain the property of H2O2 that is responsible for its bleaching action?

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Why does water show high boiling point as compared to hydrogen sulphide? Give reasons for your answer.

56

Why can dilute solutions of hydrogen peroxide not be concentrated by heating. How can a concentrated solution of hydrogen peroxide be obtained?

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9. Hydrogen
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