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Silver amalgam is used in:
Silvering of mirror
Filling of teeth
Both (1) and (2)
None of these
Which statement is not correct?
All four sides of a square are equal in length.
All four angles of a square are 90 degrees.
The diagonals of a square bisect each other at 45 degrees.
The diagonals of a square are equal in length.
Zinc reacts with conc. to produce:
ZnSO4, SO2, and H2O
ZnSO4, H2S, and H2O
ZnSO4, SO3, and H2O
ZnS, SO2, and H2O
A metal which is βnotβ affected by conc. or alkalies forms a compound . This compound can be used to give a complex which finds its application for toning in photography. The metal is:
Au
Ag
Hg
Cu
The aqueous solution containing which one of the following ions will be colourless?
The tendency to show complex formation is maximum in:
-block elements
-block elements
-block elements
-block elements
-level is successively filled up in:
Lanthanoids
Actinoids
Rare gases
Transition elements