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प्रश्न
Name the following:
The compound formed by the reaction between calcium oxide and silica.
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उत्तर
Calcium silicate (slag)
संबंधित प्रश्न
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Name a non-metallic element which has a metallic lustre
Name a non-metallic element which is a liquid at ordinary temperatures
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
What is the type of bonding expected in a metallic chloride?
Answer the following question :
Name the process used for the enrichment of sulphide ore.
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.
Give the equations for the reduction of copper oxide.
Give the equation for the reduction of Zinc oxide.
