Single Choice

Oxygen is absorbed by molten silver, which is evolved on cooling and the silver particles are scattered. This phenomenon is known as:

Asilvering of mirror
Bspitting of silver
Correct Answer
Cfrosting of silver
Dhairing of silver

Solution

During spitting of silver, oxygen is absorbed by molten Ag, which is evolved on cooling and the silver particles are scattered.
Silver can dissolve upto $$22$$ times its volume of oxygen.

The spitting of silver can be controlled by the addition of a deoxidant such as charcoal to the molten silver. This can also be achieved by covering the surface of molten silver with non-oxidizing agents or traces of copper, bismuth or zinc.

SIMILAR QUESTIONS

d - block and f - block Elements

Cobalt (60) isotope is used in the treatment of:

d - block and f - block Elements

Identify the incorrect statement.

d - block and f - block Elements

The catalystic activity of transition metals and their compounds is ascribed mainly to:

d - block and f - block Elements

The basic character of the transition metal monoxides follows the order: (Atomic nos. Ti = 22, V = 23, Cr = 24, Fe = 26)

d - block and f - block Elements

Technetium, the element below manganese in the Periodic Table, would be expected to have high values for its: $$(I)$$ melting point $$(II)$$ boiling point $$(III)$$ density

d - block and f - block Elements

Transition metals and their compounds catalyses reactions because:

d - block and f - block Elements

Catalytic activity of transition metals depends on:

d - block and f - block Elements

The magnetic moment of a transition metal ion is found to be $$3.87$$ Bohr Magneton (BM). The number of unpaired electrons present in it is:

d - block and f - block Elements

Corrosive sublimate is:

d - block and f - block Elements

Which of the following is arranged in order of increasing melting point ?

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