Results
#1. Cutting a piece of paper is a …..
#2. Making chalk by rolling paste of chalk dust and water is a
#3. Ice making from water is
#4. conversion of water into vapor is ….
#5. Change in color of hack-saw blade on heating
#6. Rusting of iron is
#7. Burning of magnesium ribbon is …..
#8. mixing magnesium oxide with water form magnesium hydroxide is
#9. Reaction of copper sulphate with iron produced iron sulphate and copper.
#10. Vinegar and baking soda together produced c a r bon dioxide, which turned lime water milky
#11. a change in which one or more new substance are formed is called a ….
#12. Select physical change
Select all that apply:
#13. Burning of any substance is a ……
#14. When food get spoiled
#15. Slice of an apple acquires a brown colour if kept open in air
#16. Rusting is due to the presence of
#17. for preventing rusting of iron a layer of ……. metal may be used
#18. The process of depositing a layer of zinc on iron is called………
#19. salt water makes the process of rusting ……….
#20. ……… steel does not rust.
#21. Process of forming large crystals of pure substances from their solution is called …..
#22. Select the physical changes process
Select all that apply: