CHAPTER 2 IS MATTER AROUND US PURE (SET-3)

Questions in this test

1. <p>When two substances X and Y are brought together, a substance Z is formed with the evolution of heat. The properties of Z are completely different from those of X and Y, so the substance Z is-</p>
2. <p>Which metals exist in a liquid state at room temperature?</p>
3. <p>The amount of solute present per unit volume or per unit mass of the solution is called-</p>
4. <p>Which one of the following will result in the formation of a mixture?</p>
5. <p>Which of homogenous substance example-</p>
6. <p>The example chemical change _____</p>
7. <p>By keeping camphor in an open vessel, its quantity keeps on decreasing due to the phenomenon of-</p>
8. <p>When the liquid is spin rapidly, the denser particles are forced to the bottom and the lighter particles remain on the top. This principle is used in-</p>
9. <p>Brass is a mixture of how much % of zinc and copper</p>
10. <p>Which of the following are correct arrangements for the increasing order of boiling of gases in air?</p>