I dare u all if u can answer this question
1.FILL IN THE BLANKS
1.Zinc oxide is __________ when hot and __________when cold.
2.Stretched rubber band involves __________change.
3.Magnesium ribbon burn with a dazzling __________light.
4. when washing soda is added to ___________carbon dioxide gas is produced .
5.Rotation of fan is ________change.
6.A glowing of tube light is a __________
4.Chemical name of washing soda is _________
5.Rusting is faster in ___________water.
6.Two methods by which rusting can be prevented by _______and ________
Answers
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1 yellow when hot and white when cold
2 shape
3 white flame
5 direction
4 na2co3
5 saline water
6 oil and paint
2 shape
3 white flame
5 direction
4 na2co3
5 saline water
6 oil and paint
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