Chemistry
Grade-8
Easy
Question
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.
- Both A and R are true, and R is the correct explanation of A.
- Both A and R are true, but R is not the correct explanation of A.
- A is true, but R is false.
- A is false, but R is true.
Hint:
Chromatography is a laboratory technique for the separation of a mixture into its components.
The correct answer is: Both A and R are true, and R is the correct explanation of A.
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.
Chromatography can be used to separate a mixture of plant pigments.
Both A and R are true, and R is the correct explanation of A.
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