Question

please give me correct answers ​

Answer 1

Answer:

copper sulphate solution

Answer 2

Answer:

6. (I) and (iv)

7. Option (i) Melting of iron metal, (iii) Bending of an iron rod and (iv) Drawing a wire of iron metal are physical changes, because in three processes, iron changes its form, not the chemical composition. In rusting of iron, its chemical composition is changed.

8. Some of the α-particles rebound after hitting the gold foil

9. milk and starch solution show Tyndall effect as they are colloids

11. Mercury and bromine are both Liquid at room temperature.. Mercury is a metal , whereas Bromine is an non-metal

12. In an alpha scattering few alpha particles rebounded because most of the space in the atom is occupied.

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