Chemistry
Grade-8
Easy
Question
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 |
- (a) – (ii), (b) – (iv), (c) – (i), (d) – (iii)
- (a) – (iv), (b) – (i), (c) – (ii), (d) – (iii)
- (a) – (iv), (b) – (i), (c) – (iii), (d) – (ii)
- (a) – (i), (b) – (iv), (c) – (ii), (d) – (iii)
Hint:
Follow the principles of all separating techniques.
The correct answer is: (a) – (iv), (b) – (i), (c) – (ii), (d) – (iii)
(a) Fractional distillation - (iv) methanol and ethanol
(b) Steam distillation - (i) purification of aniline
(c) Vacuum distillation - (ii) purification of glycerine
(d) Separating funnel - (iii) benzene and ether
Related Questions to study
Chemistry
Separating funnel is used to separate the mixture of liquids which are:
Separating funnel is used to separate the mixture of liquids which are:
ChemistryGrade-8
Chemistry
Steam distillation is used to separate those components which are:
Steam distillation is used to separate those components which are:
ChemistryGrade-8
Chemistry
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
ChemistryGrade-8
Chemistry
In the distillation process, the condenser is used to
In the distillation process, the condenser is used to
ChemistryGrade-8
Chemistry
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.
ChemistryGrade-8
Chemistry
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
Chemistry
Study the given chromatogram, which was obtained for protein extracted from soya milk. Identify the components which are present in the protein?
Study the given chromatogram, which was obtained for protein extracted from soya milk. Identify the components which are present in the protein?
ChemistryGrade-8
Chemistry
Which of the following method is used for checking the purity of pharmaceuticals?
Which of the following method is used for checking the purity of pharmaceuticals?
ChemistryGrade-8
Chemistry
Identify the mixture which can be separated by using distillation.
Identify the mixture which can be separated by using distillation.
ChemistryGrade-8
Chemistry
In the centrifugation process, particles are separated from a solution according to their
In the centrifugation process, particles are separated from a solution according to their
ChemistryGrade-8
Chemistry
In chromatography, the filter paper which is used acts as
In chromatography, the filter paper which is used acts as
ChemistryGrade-8
Chemistry
______ is a process that can be used to obtain a very pure solid dissolved in a liquid.
______ is a process that can be used to obtain a very pure solid dissolved in a liquid.
ChemistryGrade-8
Chemistry
In the simple distillation process, the sample of mixture is first ______, and then _____ to recover the liquids
In the simple distillation process, the sample of mixture is first ______, and then _____ to recover the liquids
ChemistryGrade-8
Chemistry
Complete following analogy:
Drugs from the blood : chromatography : a mixture of acetone and water : ………
Complete following analogy:
Drugs from the blood : chromatography : a mixture of acetone and water : ………
ChemistryGrade-8
Chemistry
Multiple true-false type questions.
State whether the following statements are true or false.
I. The principle of distillation is based on the difference in the solubilities of two components in the mixture.
II. Chromatography can also be used to detect contamination in food.
III. The particle of colloids can be separated by using the centrifugation method.
Multiple true-false type questions.
State whether the following statements are true or false.
I. The principle of distillation is based on the difference in the solubilities of two components in the mixture.
II. Chromatography can also be used to detect contamination in food.
III. The particle of colloids can be separated by using the centrifugation method.
ChemistryGrade-8