Copper sulphate (CuSO4) possesses.
Red color
Blue color
Green color
Yellow
A silvery liquid element 'X' is a good conductor of heat and electricity at room temperature. The element 'X' is-
Aluminium
Magnesium
Mercury
Lead
Which material shows shiny appearance?
Coal
Sulphur
Carbon
Which two of these elements are metals?
I. Iodine
II. Aluminium
III. Zinc
IV. Carbon
I and II
II and III
III and IV
IV and I
"Platinum , silver, gold are normally occurs in nature ___________"
In free state
As sulphare ore
As sulphide ore
As carbonate ore
What is the chemical formula of copper sulphate?
CuSO4
CuCO3
CuCl2
CuO
Gold is used in _________________.
Thermometer
Fuel
Jewellery
Machinery
On burning, ................ reacts with oxygen to produce metal oxides that are .................. in nature. The information in which row completes the given statement?
Metals, acidic
Non-metals, acidic
Metals, basic
Non-metals, basic
Most metals react with water under different conditions. Which of the following reacts vilolently with water, evolving hydrogen?
Iron
Sodium
Zinc
Which of the following are solid non-metals?
I. Carbon
II. Sulphur
III. Phosphorus
I and II only
II and III only
III and I only
All of the above
