Separation by Sublimation

Q. Naphthalene balls becomes smaller in size, when kept exposed for a few days, due to sublimation.

1. True
2. False

Q.

A mixture of ammonium chloride and common salt is separated by the process of ______________. The volatile component in this case is ______________.

1. sublimation, salt

2. centrifugation, ammonium chloride

3. sublimation, ammonium chloride

4. centrifugation, salt

Q.

Naphthalene balls become smaller in size when kept exposed for a few days. This is because of sublimation.

1. True

2. False

Q.

How will you separate a mixture of camphor, sand and salt?

Q.

Small particles of sand in river water are removed by the process of

1. decantation

2. evaporation

3. filtration

4. crystallization

Q.

what is the common name of solid carbon dioxide?

Q.

How will you separate a mixture of chalk and common salt into its components?

Q.

In which of the following processes do the change in the states of matter involve the absorption of energy?
A. Boiling
B. Sublimation
C. Condensation
D. Melting

1. A and B only

2. A, B and C only

3. A, B and D

4. A only

Q. Identify the phenomenon due to which the size of solid balls of naphthalene or camphor get reduced after few weeks.

1. Evaporation
2. Melting
3. Sublimation
4. Condensation

Q.

Volatile component can be separated from non-volatile component by the process of ____________.

1. evaporation

2. sublimation

3. boiling

4. centrifugation

Q. Which among the following methods is most suitable to separate a mixture of salt and ammonium chloride?

1. Filtration
2. Centrifugation
3. Sublimation
4. Separating funnel

Q. A mixture of iodine and sand can be separated by the process of :

1. Sublimation
2. Distillation
3. Crystallisation
4. Chromatography

Q. A mixture of camphor and common salt can be separated by ________.

1. crystallisation
2. distillation
3. sublimation
4. sedimentation

Q.

Which among the following methods is most suitable to separate a mixture of salt and ammonium chloride?

1. Sublimation

2. Centrifugation

3. Filtration

4. Separating funnel