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Hydrogen

Question

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Explain why hydrogen peroxide is used to restore old lead paintings in museums ?

Solution

Hydrogen peroxide oxidises black coloured PbS to PbSO₄ and hence is used to restore the colour of old paintings.

Some More Questions From Hydrogen Chapter

Why does hydrogen occur in a diatomic form rather than in a monoatomic form under normal conditions?

Give one example in which hydrogen acts as an oxidising agent.

Give laboratory Preparation of Dihydrogen ?

Name the substances in which hydrogen exhibits 0 and -1 oxidation states.

Name one isotope of hydrogen which has no neutron.

Which isotope of hydrogen is used as a tracer in organic reactions ?

Hydrogen is the lightest gas. Still its use in filling balloons has been discarded. Why?

Hydrogen forms both H⁺ ion and H^-ion. Explain.

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