Advertisements
Advertisements
Question
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Solution
One ore of manganese is pyrolusite. This is an oxide ore. Manganese dioxide is the compound present in pyrolusite. Its chemical formula is MnO2.
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.
Give two uses of Germanium
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Tick (√) the most appropriate answer.
Graphite is used :
Write name.
Alloy of sodium with mercury.
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
Halogen reacts with acid.
Which one of the following is an example for a metal?
Compare the conductivity of metals and non–metals.
