Advertisements
Advertisements
Question
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
Solution
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
RELATED QUESTIONS
Name the following: Main ore of aluminium.
An ore of manganese metal is:
(a) bauxite
(b) haematite
(c) cuprite
(d) pyrolusite
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg
State three objectives achieved during the roasting of ores.
An element has its electron configuration as 2,8,8,2. Now answer the following questions.
a) What is the atomic number of this element?
b) What is the group of this element?
c) To which period does this element belong?
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
Name a non- metal that has a metallic luster and sublimes on heating.
Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.
Explain concept with example/explain with the help of a balanced equation.
Roasting
Read the following passage and answer the questions.
According to the reactivity series, zinc is more reactive than iron, iron is more reactive than silver. During study of this, a student dipped the iron nails in silver nitrate solution.
- What is reactivity series?
- What will happen when iron nails are dipped in silver nitrate solution?
- Which type of reaction happens when iron metal reacts with silver nitrate solution?
- What will happen if a zinc rod is used instead of iron nail?
