The process of aluminium extraction is called__________________?

Related Mcqs:

1. moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?

   A. 0.18 mole B. 0.27 mole C. 0.24 mole D. 0.09 mole...

2. Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?

   A. aluminium can be recycled B. aluminium has very low density C. aluminium is the most abundant metal in the earth crust D. aluminium is resistant to corrosion by organic acids....

3. Parke’s process is used in the extraction of________?

   A. Iron B. Sodium C. Silver D. Zinc Submitted by: Muhammad Ali Kunbhar...

4. Aluminium oxide is_________________?

   A. Acidic oxide B. Basic oxide C. Amphoteric oxide D. It does not exists...

5. Because of its ability to combine with both oxygen and nitrogen aluminium metal is used_____________?

   A. As nitrometer B. To remove air bubbles from molten metal C. To produce alloy D. As insulator...

6. If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?

   A. Heat of transition B. Heat of fusion C. Enthalpy change D. All of above...

7. Any process of chemical decay of metals due to the action of surrounding medium is called__________________?

   A. activation B. enameling C. corrosion D. coating...

8. In solvent extraction ether is used to separate products of organic synthesis from________________?

   A. water B. iodine C. hydrochloric acid D. gases...

9. When – COOH is attached directly to the benzene ring the acid is called__________________?

   A. Aliphatic B. Alicyclic C. Carboxylic D. Aromatic...

10. The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called__________________?

    A. Mother liquor B. Filterate C. Extract D. Molasses...