Question

Match the chemical reactions with the type of chemical reactions given
A
1. dipping an iron nail in copper sulphate solution
2. burning of magnesium in air
3. mixing sodium sulphate solution and barium chloride solution
4. heating potassium chlorate

B
a) double displacement
b) chemical displacement
c) neutralization
d) chemical combination
e) chemicalde composition

Answer 1

1-b 2-d 3-a 4-e. hope you will be helpful.

Answer 2

At the point when Iron nail (Ferrum) is dunked in Copper sulfate (CuSO4) there takes response among them and copper sulfate change its shading from blue to light green.

This shows Iron is more receptive than Copper, it can supplant Copper from CuSO4.

CuSO4 is in blue Color and FeSO4 is in light green shading.