Advertisements
Advertisements
प्रश्न
Name the following:
Name two metals always find in combined state.
उत्तर
sodium and potassium
APPEARS IN
संबंधित प्रश्न
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
Explain how, mercury is extracted from its sulphide ore (cinnabar). Give equations of the reactions involved.
Which metal is extracted from calamine ore?
Which metal can be extracted from the following ore?
Calamine
State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Define the following term.
Mineral
Give the chemical formula of :
Sodium aluminate
Mercury, silver, gold are highly reactive metals.
Explain concept with example/explain with the help of a balanced equation.
Roasting
Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
