Chemistry
Grade-8
Easy
Question
Identify the mixture which can be separated by using the fractional distillation:
- Mixture of solid-solid substances
- Mixture of gas and solid
- Mixture of solid in liquid
- Mixture of two liquids
Hint:
Two miscible liquids are separated.
The correct answer is: Mixture of two liquids
Fractional distillation is the separation of a mixture into its component parts, or fractions. Chemical compounds are separated by heating them to a temperature at which one or more fractions of the mixture will vaporize. It uses distillation to fractionate. Generally the component parts have boiling points that differ by less than 25°C (45°F) from each other under a pressure of one atmosphere pressure.
The mixture which can be separated by using the fractional distillation is mixture of two liquids.
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The Fractional distillation is always different from the distillation. It is due to the use of which of the following equipment?
The Fractional distillation is always different from the distillation. It is due to the use of which of the following equipment?
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In the below table the boiling point of a few gases are given. The liquid mixture which contains these all gases are fractionally distilled. What will be the order of gases distilling out?
In the below table the boiling point of a few gases are given. The liquid mixture which contains these all gases are fractionally distilled. What will be the order of gases distilling out?
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In the process of vacuum distillation the pressure of _______ above the solvent is lowered.
In the process of vacuum distillation the pressure of _______ above the solvent is lowered.
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During the separation of an immiscible liquid-liquid mixture by using a separating funnel, the following steps are followed. Arrange these steps in proper order.
(1) The nozzle tap is opened gradually and the denser component is allowed to the dropdown.
(2) The liquid-liquid mixture is poured into the separating funnel clamped vertically.
(3) The light component remains in the flask.
(4) The liquid with higher density settles down at the bottom of the flask
(5) The mixture is allowed to stand where clear layers of liquids are formed.
During the separation of an immiscible liquid-liquid mixture by using a separating funnel, the following steps are followed. Arrange these steps in proper order.
(1) The nozzle tap is opened gradually and the denser component is allowed to the dropdown.
(2) The liquid-liquid mixture is poured into the separating funnel clamped vertically.
(3) The light component remains in the flask.
(4) The liquid with higher density settles down at the bottom of the flask
(5) The mixture is allowed to stand where clear layers of liquids are formed.
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A mixture of two miscible liquids cannot be separated by:
A mixture of two miscible liquids cannot be separated by:
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The principle of separation of substances by using a separating funnel is based on:
The principle of separation of substances by using a separating funnel is based on:
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The process of fractional distillation, is carried out by using a special type of instrument which is known as …….
The process of fractional distillation, is carried out by using a special type of instrument which is known as …….
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Which among the following component is separated by using the principle of steam distillation ?
Which among the following component is separated by using the principle of steam distillation ?
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Match the entries of Column A with those of Column B.
| Column A |
Column B |
| (a) Fractional distillation |
(i) purification of aniline |
| (b) Steam distillation |
(ii) Purification of glycerine |
| (c) Vacuum distillation |
(iii) Benzene and ether |
| (d) Separating funnel |
(iv) Methanol and ethanol |
Match the entries of Column A with those of Column B.
| Column A |
Column B |
| (a) Fractional distillation |
(i) purification of aniline |
| (b) Steam distillation |
(ii) Purification of glycerine |
| (c) Vacuum distillation |
(iii) Benzene and ether |
| (d) Separating funnel |
(iv) Methanol and ethanol |
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Separating funnel is used to separate the mixture of liquids which are:
Separating funnel is used to separate the mixture of liquids which are:
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Steam distillation is used to separate those components which are:
Steam distillation is used to separate those components which are:
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The process in which the substance is separated through spinning at a hight speed is called
The process in which the substance is separated through spinning at a hight speed is called
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In the distillation process, the condenser is used to
In the distillation process, the condenser is used to
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Identify the incorrect statement/s from the following:
(i) Centrifugation is used in diagnostic laboratories for blood and urine tests.
(ii) Distillation method can be used to separate the butter from the cream.
(iii) Chromatography is useful for separating the alum from impure samples.
Identify the incorrect statement/s from the following:
(i) Centrifugation is used in diagnostic laboratories for blood and urine tests.
(ii) Distillation method can be used to separate the butter from the cream.
(iii) Chromatography is useful for separating the alum from impure samples.
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Arrange the following steps in ascending order which are involved in the distillation of alcohol.
(i) The flask is heated.
(ii) The vapors of alcohol flow into the condenser, where it gets cooled and converts into liquid again.
(iii) Mixture of alcohol and water are taken in in the distillation flask.
(iv) The remaining liquid is stored in the beaker, and water continues to remain in the flask.
(v) Monitor the temperature with the help of a thermometer.
Arrange the following steps in ascending order which are involved in the distillation of alcohol.
(i) The flask is heated.
(ii) The vapors of alcohol flow into the condenser, where it gets cooled and converts into liquid again.
(iii) Mixture of alcohol and water are taken in in the distillation flask.
(iv) The remaining liquid is stored in the beaker, and water continues to remain in the flask.
(v) Monitor the temperature with the help of a thermometer.
ChemistryGrade-8
