Chemistry
Grade-8
Easy
Question
In the chromatographic technique, the solvent acts as
- A Residue
- A Solute
- A solvent phase
- Mobile phase
Hint:
Mobile phase is a phase which carries solute through a system.
The correct answer is: Mobile phase
Chromatography is a laboratory technique for the separation of a mixture into its components. The mixture is dissolved in a fluid solvent (gas or liquid) called the mobile phase, which carries it through a system (a column, a capillary tube, a plate, or a sheet) on which a material called the stationary phase is fixed.
In the chromatographic technique, the solvent acts as mobile phase.
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Direction: For question given below, two statements are given one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d], as given below.
Assertion: Chromatography can be used to separate a mixture of plant pigments.
Reason: Chromatography is a process of separation of two or more solid component of mixture.
Direction: For question given below, two statements are given one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d], as given below.
Assertion: Chromatography can be used to separate a mixture of plant pigments.
Reason: Chromatography is a process of separation of two or more solid component of mixture.
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The substance that remains undissolved in the mixture is called
The substance that remains undissolved in the mixture is called
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A standard chromatogram of three dyes (red, blue, and green) is given below. Based on the standard chromatogram analysis and the given chromatography, grams (A, B, C, and D), arrange them in the order of the descriptions given below.
(i) This chromatogram represents a mixture of all three dyes along with an impurity.
(ii) This chromatogram represents a mixture of red and blue dyes.
(iii) This chromatogram represents a mixture of all three dyes.
(iv) This chromatogram represents a mixture of red and green dyes.
A standard chromatogram of three dyes (red, blue, and green) is given below. Based on the standard chromatogram analysis and the given chromatography, grams (A, B, C, and D), arrange them in the order of the descriptions given below.
(i) This chromatogram represents a mixture of all three dyes along with an impurity.
(ii) This chromatogram represents a mixture of red and blue dyes.
(iii) This chromatogram represents a mixture of all three dyes.
(iv) This chromatogram represents a mixture of red and green dyes.
ChemistryGrade-8
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The two miscible liquids can be separated by
The two miscible liquids can be separated by
ChemistryGrade-8
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The principle of chromatography is based on
The principle of chromatography is based on
ChemistryGrade-8
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In centrifugation, the centrifuge consists of a centrifuge tube holder called
In centrifugation, the centrifuge consists of a centrifuge tube holder called
ChemistryGrade-8
Chemistry
Which among the following mixture is separated by using the principle of simple distillation?
Which among the following mixture is separated by using the principle of simple distillation?
ChemistryGrade-8
Chemistry
Match the entries of Column A with those of Column B.
Therefore the correct option is choice 1
Match the entries of Column A with those of Column B.
ChemistryGrade-8
Therefore the correct option is choice 1
Chemistry
Chromatography is used to separate
Chromatography is used to separate
ChemistryGrade-8
Chemistry
Identify the equipment which is used to cool down the liquid during the distillation from the following
Identify the equipment which is used to cool down the liquid during the distillation from the following
ChemistryGrade-8
Chemistry
Which of the following is used to separate the mixture of solid and liquid substances?
Which of the following is used to separate the mixture of solid and liquid substances?
ChemistryGrade-8
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Which of the following solvent can be used to separate common salt from sulphur powder without using water as solvent?
Which of the following solvent can be used to separate common salt from sulphur powder without using water as solvent?
ChemistryGrade-8
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Complete following analogy:
Drugs from the blood : chromatography :: Salt from a mixture of sand and salt : ………
Complete following analogy:
Drugs from the blood : chromatography :: Salt from a mixture of sand and salt : ………
Complete following analogy:
Drugs from the blood : chromatography :: Salt from a mixture of sand and salt : ………
Complete following analogy:
Drugs from the blood : chromatography :: Salt from a mixture of sand and salt : ………
ChemistryGrade-8
Chemistry
The mixture of iodine and salt can be separated by using:
The mixture of iodine and salt can be separated by using:
ChemistryGrade-8
Chemistry
Which of the following apparatus is not needed during the process of sublimation?
Which of the following apparatus is not needed during the process of sublimation?
ChemistryGrade-8
