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A chromatogram of pure samples of food c...

A chromatogram of pure samples of food colours X, Y and Z is given in the following illustration 1. Three samples of same food materials A, B and C are analysed for purity, with the help of the chromatogram in illustration 2. Identify the impure sample.

A

A

B

B

C

C

D

A and C

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PEARSON IIT JEE FOUNDATION-NATURE OF MATTER -LEVEL 1
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  2. During a phase transition of a substance the temperature (T) verse hea...

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  3. A chromatogram of pure samples of food colours X, Y and Z is given in ...

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  4. Maximum intermolecular forces of attraction exists in

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  5. A gaseous mixture of A, B and C is pased through water. The gaseous mi...

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  6. Identify the element from the following :

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  7. In which of the following cases, cooking is very slow ?

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  8. Which of the following reactions is not a combination reaction ?

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  9. A mixture of three liquids X, Y and Z when subject to fractional disti...

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  10. Grease spots from garments can be separated by a method of

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  11. Which of the following involves both neutralisation as well as precipi...

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  12. Arrange the following changes of energy during following phase transit...

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  13. For the separation of red ink from blue ink a technique is used which ...

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  14. Among the following, identify the substance in which molecules posses ...

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  15. In Darjeeling, distilled water boils at a temperature

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  16. At melting point,

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  17. Which among the following statements is true ?

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  18. Which among the following is not a homogeneous mixture ?

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  19. Gunpowder is a .

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  20. Which of the following gases can be separated completely from a mixtur...

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