Chemistry
Grade-8
Easy
Question
Complete following analogy:
Drugs from the blood : chromatography : a mixture of acetone and water : ………
- Evaporation and decantation
- Using simple distillation
- Centrifugation
- Only chromatography
Hint:
The given analogy is a combination of mixture of compounds and its separation techniques.
The correct answer is: Using simple distillation
The given analogy is a combination of mixture of compounds and its separation techniques.
Drugs from the blood can be separated by using chromatography.
A mixture of acetone and water can be separated by using simple distillation.
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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.
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What happens to the atoms during the process of sublimation?
What happens to the atoms during the process of sublimation?
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Identify the technique of separation, which is shown in the below picture.
Identify the technique of separation, which is shown in the below picture.
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The pattern on the paper in chromatographic techniques is known as
The pattern on the paper in chromatographic techniques is known as
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Which of the following apparatus is not used in the process of simple distillation?
Which of the following apparatus is not used in the process of simple distillation?
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During the sublimation process, ammonium chloride is collected at
During the sublimation process, ammonium chloride is collected at
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In the chromatographic technique, the solvent acts as
In the chromatographic technique, the solvent acts as
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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.
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The two miscible liquids can be separated by
The two miscible liquids can be separated by
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The principle of chromatography is based on
The principle of chromatography is based on
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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
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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
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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
