The characteristic properties of non-metals are:
I. Formation of acidic oxides
II. High density
III. Tendency to form anions
I and II only
I and III only
II and III only
All of the above
Which of these metals is found in the alloys of brass and bronze?
Copper
Zinc
Iron
Tin
4 P + 502 ----------> _________.
Phosphorous Oxygen
P3O5
2P2
2P2O5
P2O5
Metals react with oxygen to form ___________.
Acidic oxides
Basic oxides
Either acidic or basic oxides on depending on the metal.
There is no reaction
Gun metal is an alloy of:
Copper and aluminium
Copper, tin and zinc
Copper, zinc and nickel
Copper and tin
What is the chemical formula of sulphurous acid?
H2SO4
SO2
SO3
H2SO3
Which one of the following metal is always stored under kerosene?
Sodium
Aluminium
Magnesium
Zinc replaces copper from ________________.
Zinc sulphate
Copper sulphate
Sulphuric acid
Copper oxide
Copper sulphate (CuSO4) possesses.
Red color
Blue color
Green color
Yellow
Gold is used in _________________.
Thermometer
Fuel
Jewellery
Machinery
