Mond's Process

Why pine oil Is used In froth floatation process?

describe a method for refining Nickel.

Zone refining is based on the principle that _________ .

Zone refining is a method to obtain ____________

Name the reagent used in the leaching of gold.

1. Carbon

2. Iodine

3. Sodium cyanide

4. Carbon monoxide

Zirconium or Titanium is refined by which process

1. Van Arkel refining

2. Liquation

3. Zone refining

4. Mond Process

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices.
(a) Both assertion and reason are true and reason is the coreect explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
(e) Assertion and reason both are wrong.
Assertion (A) Nickel can be purified by Mond's process.
Reason (R) Ni $(CO{)}_4$ is volatile compound which decomposes at 460 K to give pure Ni.

1. Van Arkel method
2. Mond process
3. Zone refining
4. Cupellation

Write two basic requirements for refining of a metal by Mond's process and by van Arkel Method.

1. $Ni$
2. $Al$
3. $Fe$
4. $Cu$

1. Electrochemical reduction
2. Reduction by carbon
3. Thermal decomposition
4. Chemical reduction by aluminium

1. zinc
2. oxides
3. reduction
4. none of these

1. Zinc
2. Copper
3. Nickel
4. Titanium

Which method of purification is represented by the following equations?

$Ni+4CO$ $\stackrel{{70}^{\circ }C}{\to }$ $Ni(CO{)}_4$ $\stackrel{{180}^{\circ }C}{\to }$ $Ni+4CO$

1. van Arkel

2. Zone refining

3. Mond’s process

4. Cupellation

1. electrochemical reduction
2. thermal decomposition
3. chemical reduction by aluminium
4. reduction by carbon

Which method of purification is represented by the following equations?

$Ni+4CO$ $\stackrel{{70}^{\circ }C}{\to }$ $Ni(CO{)}_4$ $\stackrel{{180}^{\circ }C}{\to }$ $Ni+4CO$

1. Mond’s process

2. van Arkel

3. Zone refining

4. Cupellation

1. Cupellation
2. Van Arkel method
3. Mond's process
4. Zone refining

1. 1, 2 and 3
2. 2, 3 and 1
3. 3, 1 and 2
4. 2, 1 and 3

Which method of purification is represented by the following equations?

$Ni+4CO$ $\stackrel{{70}^{\circ }C}{\to }$ $Ni(CO{)}_4$ $\stackrel{{180}^{\circ }C}{\to }$ $Ni+4CO$

1. van Arkel

2. Zone refining

3. Mond’s process

4. Cupellation

1. Silver is immiscible in molten Zn
2. As is miscible in NaCN
3. Ag is more miscible in molten zinc than in molten Pb
4. Ag is more miscible in molten Pb in comparison to molten zinc

How many moles of $Ni(CO{)}_4$ could be obtained from the CO produced by the reaction of 75.0 g of carbon?

1. 6.25
2. 1.5625
3. 3.125
4. 25