The scientist awarded Nobel Prize for isolation of all elements in the group zero:
Hund
Proust
William Ramsay
Ramanujan
An ionic crystal among the following is:
NaCl
Diamond
Solder
Duralumin
Solder consists of:
Copper and lead
Tin and copper
Lead and zinc
Lead and tin
Silica is:
Carbon dioxide
Silicon dioxide
Phosphorus dioxide
Calcium chloride
Materials that are able to return to their old shape after stretching are called:
Flexible material
Elastic material
Ductile metals
Non - elastic material
The first systematic classification of elements was done by :
Einstein
Niels Bohr
Mendeleev
Moseley
Bronze is a alloy of copper with :
Zinc
Tin
Carbon
Nickel
A triple bond exist in:
Hydrogen
Oxygen
Nitrogen
Dry ice is :
Water
Solid carbon dioxide
Silica
Quartz
The most stable arrangement of electrons is for :
Halogens
Noble gases
Alkali metals
Transition metals
