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प्रश्न
Name : The metal which is liquid at room temperature.
उत्तर
Mercury
APPEARS IN
संबंधित प्रश्न
Name two metals which are highly resistant to corrosion.
During galvanisation, iron metal is given a thin coating of one of the following metals. This metal is:
(a) chromium
(b) tin
(c) zinc
(d) copper
How many valence electrons are present in non- metals?
State three objectives achieved during the roasting of ores.
Define roasting.
Write the name.
Metals which are amphoteric in nature.
Mercury, silver, gold are highly reactive metals.
The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ____________.
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions.
Give the reaction involved during extraction of zinc from its ore by
- roasting of zinc ore
- calcination of zinc ore
