Fill in the blanks:
(a) A colloid is a ______ mixture and its components can be separated by the technique known as ______.
(b) Ice, water and water vapor look different and display different ______ properties but they are _____ the same.
(c) A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for sometime. The upper layer in the separating funnel will be of ______ and the lower layer will be that of ______.
(d) A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25K can be separated by the process called ______.
(e) When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the ______ of light by milk and the phenomenon is called ______. This indicates that milk is a ______ solution.

AcademicChemistryNCERTClass 9

(a) A colloid is a heterogeneous mixture and its components can be separated by the technique known as centrifugation.

(b) Ice, water and water vapor look different and display different physical properties but they are chemically the same.

(c) A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for sometime. The upper layer in the separating funnel will be of water and the lower layer will be that of chloroform.

(d) A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25K can be separated by the process called fractional distillation.

(e) When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the scattering of light by milk and the phenomenon is called Tyndall effect. This indicates that milk is a colloidal solution.

raja
Updated on 10-Oct-2022 13:29:37

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