Advertisements
Advertisements
प्रश्न
Name the following:
The compound formed by the reaction between calcium oxide and silica.
Advertisements
उत्तर
Calcium silicate (slag)
APPEARS IN
संबंधित प्रश्न
An element L consists of molecules.
When L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?
How is the following metallic oxide reduced? Write equations:
Iron (ll) oxide
Write a balanced chemical equation for each of the following reactions :
(i) Reduction of copper (II) oxide by hydrogen
Give the chemical name and formula of 'cryolite'
Name a non-metallic element which has a metallic lustre
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
Write the observation for the following:
A paper dipped in potassium permanganate solution is put on the mouth of a test tube containing sulphur dioxide gas.
- A to F below relate to the source and extraction of either zinc or aluminium:
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
- Write down the three letters each from the above list which are relevant to
- Zinc
- Aluminium
- Fill in the blanks using the most appropriate words from A to F.
- The ore from which aluminium is extracted must first be treated with ………………. so that pure aluminium oxide can be obtained.
- Pure aluminium oxide is dissolved in ….. to make a conducting solution.
iii. Write the formula of cryolite.
Steel is an alloy of iron and ______.
Give the equation for the reduction of Zinc oxide.
