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1.
'Mercury' tree can be prepared:
2.
When excess of 
is added to a solution of 
, a white ppt. turning to grey is obtained. This grey colour is due to the formation of:
is added to a solution of , a white ppt. turning to grey is obtained. This grey colour is due to the formation of:
3.
Among the following, the compound that is both paramagnetic and coloured is
4.
All the metals form oxides of the type MO except
5.
Cinnabar is an ore of:
6.
Heating mixture of 
and 
will give
and will give
7.
The substance that sublimes on heating is:
8.
Actinides
9.
The 
-transition series contains elements from atomic number:
-transition series contains elements from atomic number:
10.
Which of the following is not a characteristic of transition elements?