Question

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Answer 1

Answer:

6) (a) when an iron blade is placed in copper sulphate solution it becomes greenish blue in colour

(b) Fe + CuSo4 -------»FeSo4 +Cu

7) fuse wire passes on the excess current to the ground & hence leads to protection if fusing

8) when human muscle cells respires aerobically it leads formation of lactic acid & ethanol

which causes cramps

9) Speed = 75km/hr

time = 6 hrs

distance = speed x time

distance = 75 x 6

distance = 450 km

good day

Answer 2

Answer:

See attachment....

hope it helps..... mark brainliest