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Identify a physical change among the fol...

Identify a physical change among the following :

A

respiration

B

digestion of food

C

burning of wax

D

glowing of an electric bulb

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AI Generated Solution

To identify a physical change among the given options, we need to analyze each option based on the characteristics of physical and chemical changes. ### Step-by-Step Solution: 1. **Understand the Definitions**: - **Physical Change**: A change in which the appearance or state of a substance changes, but its chemical composition remains the same. No new substance is formed. - **Chemical Change**: A change that results in the formation of one or more new substances with different chemical compositions. ...
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PEARSON IIT JEE FOUNDATION-NATURE OF MATTER -LEVEL 1
  1. During summer days, water kept in an earthen pot (pitcher) becomes coo...

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  2. The electric bulb on long use forms a black coating on its inner surfa...

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  3. Identify a physical change among the following :

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  4. During a phase transition of a substance the temperature (T) verse hea...

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

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  6. Maximum intermolecular forces of attraction exists in

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

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  8. Identify the element from the following :

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

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

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

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

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

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

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

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

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  17. In Darjeeling, distilled water boils at a temperature

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  18. At melting point,

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  19. Which among the following statements is true ?

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

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