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Class 9 Exam  >  Class 9 Tests  >  Test: Separating the Components of a Mixture - Class 9 MCQ

Test: Separating the Components of a Mixture - Class 9 MCQ


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10 Questions MCQ Test - Test: Separating the Components of a Mixture

Test: Separating the Components of a Mixture for Class 9 2024 is part of Class 9 preparation. The Test: Separating the Components of a Mixture questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Separating the Components of a Mixture MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Separating the Components of a Mixture below.
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Test: Separating the Components of a Mixture - Question 1
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What is the basic principle behind simple distillation process?

Detailed Solution for Test: Separating the Components of a Mixture - Question 1

Fractional distillation is the method used for the separation of components of a mixture containing two miscible liquids that boil without decomposition and have sufficient difference in their boiling points.

Two conditions essential for using this method are:

1) Two liquids must be miscible that is they totally mix with each other.

2) The difference between the boiling points of the liquids should be greater than 25K.

Test: Separating the Components of a Mixture - Question 2
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Which technique is used to separate drugs from blood?

Detailed Solution for Test: Separating the Components of a Mixture - Question 2

Chromatography is the method used to separate drugs from the blood. Chromatography is a technique used to separate components in a mixture on the basis of them being mixed as mobile phase i.e. liquid or gas and stationary phase i.e. solid or liquid.

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Test: Separating the Components of a Mixture - Question 3
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Which of the following statement is true about evaporation?

Detailed Solution for Test: Separating the Components of a Mixture - Question 3

Evaporation:  Evaporation is the process of vaporizing the solvent to obtain the solute. Evaporation is used to separate a mixture containing a non-volatile, soluble solid from its volatile, liquid solvent. 
For example :- We can separate salt from a solution by evaporating the water from the solution.

Test: Separating the Components of a Mixture - Question 4
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Which one of the following laboratory apparatus is not used in the process of evaporation?
Detailed Solution for Test: Separating the Components of a Mixture - Question 4

Funnel because in funnel there is no use of heat and evaporation cause by heating and other are resistant to heating while funnel is not registered to heating.

Test: Separating the Components of a Mixture - Question 5
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What precaution should be taken while separating the coloured components of ink?
Detailed Solution for Test: Separating the Components of a Mixture - Question 5

The blue ink (or black ink) used; in fountain pens is a liquid mixture. It is a mixture of a dye in water. This dye is the colored component of the ink (which gives it a blue or black color). We can separate the colored component of ink (or dye from ink) by the process of evaporation.

Precaution that should be taken is that ink should not be heated directly as it is decomposed by the high temperature, so we use a water bath for evaporating ink.

Test: Separating the Components of a Mixture - Question 6
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During crystallisation, the clear solution obtained after filtration is heated till:
Detailed Solution for Test: Separating the Components of a Mixture - Question 6

During crystallisation, the clear solution obtained after filtration is heated till a saturated solution or concentrated solution is obtained. This is done so that crystalls are obtained.

Test: Separating the Components of a Mixture - Question 7
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Which of the following from a laboratory is used for chromatographic technique?
Detailed Solution for Test: Separating the Components of a Mixture - Question 7

Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine substances from liquids or air. It is used in science labs to remove solids from liquids.

Test: Separating the Components of a Mixture - Question 8
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Which of the following components does not get separated by chromatographic technique?
Detailed Solution for Test: Separating the Components of a Mixture - Question 8

Chromatography is the technique used for the separation of those solutes that dissolve in the same solvent.

Test: Separating the Components of a Mixture - Question 9
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In a chromatographic technique, a sample whose components needs to be separated is placed:
Detailed Solution for Test: Separating the Components of a Mixture - Question 9

A small vertical opening (2-3 cm) should be left in the filter paper so the development can be observed. 

Test: Separating the Components of a Mixture - Question 10
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Which one of the following statement is incorrect regarding different separation techniques?
Detailed Solution for Test: Separating the Components of a Mixture - Question 10

Evaporation is used to separate salt from seawater.

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