Hydraulic Washing

Q. Hydraulic washing is a technique used for the concentration of ores of ____.

1. Aluminium
2. Gold
3. Iron
4. Copper

Q.

Levigation is used for cleaning of the ore before metallurgical processes.

1. False

2. True

Q.

Which of the following sulphates are insoluble in water?

1. Calcium

2. Copper

3. Lead

4. Barium

Q.

Gravity separation is also called __

Q. Gravity separation method is based on the difference in weight of the metallic ore and gangue particles.

1. True
2. False

Q. Hydraulic washing is used for concentration of the ore during a metallurgical processes.

1. False
2. True

Q.

Gravity separation is generally applicable for heavier ores such as Haematite and Cassiterite.

1. True

2. False

Q. A method used to concentrate the ore of lead. Name the process.

Q. Which amongst the given metals has an ore that can be concentrated by the method of hydraulic washing?

1. Aluminium
2. Gold
3. Iron
4. Copper

Q.

Ores mined from the earth are usually contaminated with large amounts of impurities known as _______.

1. flux

2. minerals
3. alloys
4. gangue

Q. Gravity separation is based on the difference in the ____ of the ore and the gangue particles.

1. solubility
2. density
3. magnetic properties
4. texture

Q.

what is the name of solvent of AU

Q. Levigation takes advantage of the difference in the specific __ of the ore and the gangue particles

1. gravity
2. weight
3. volume
4. mass

Q. Gravity separation is also called ___ .

1. magnetic seperation
2. distillation
3. levigation
4. levitation

Q. Hydraulic washing is a technique used for the concentration of ores of ____.

1. Aluminium
2. Gold
3. Iron
4. Copper