Advertisements
Advertisements
प्रश्न
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
उत्तर
Hematite is an ore of iron. Iron compound present in hematite ore is iron (III) oxide. The formula of the ore is Fe2O3.
APPEARS IN
संबंधित प्रश्न
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset, but after a futile argument, the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
Name the following:
The property possessed by metals by which they can be beaten into sheets.
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
(a) Name the metal and write its chemical symbol.
(b) Write the name and formula of the sulphide ore.
(c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
(d) Name a common device in which this metal is used.
(e) Can this metal displace copper from copper sulphate solution? Why?
Give reasons, why aluminum is used in:
In making ships
State one observation for each of the following :
Copper sulphate solution is electrolysed using copper electrodes.
Complete the incomplete statement with missing word:
Metals are malleable while non-metals are ______.
Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
Choose the correct answer from the options given below:
The metal is a liquid at room temperature.
Find the odd one out and give its explanation.