Advertisements
Advertisements
प्रश्न
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
उत्तर
(d) Zinc.
Calamine is an ore of zinc and its compound is zinc carbonate (ZnCO3).
APPEARS IN
संबंधित प्रश्न
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
Which of the following is an ore of mercury metal?
(a) rock salt
(b) cinnabar
(c) calamine
(d) haematite
The metal which is always present in an amalgam is:
(a) iron
(b) aluminium
(c) mercury
(d) magnesium
Give the principles of electromagnetic separation.
Complete the incomplete statement with missing word:
Metals are malleable while non-metals are ______.
Name:
The allotrope of the non-metal carbon which conducts electricity.
Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________
In electrolytic reduction of alumina _______ is used as a cathode.
Explain the following reaction with the balanced equation.
Zinc oxide is treated with carbon
