Question

In order to study the relative activities of metals, namely, Cu, Ag, Al2(SO4)3 and FeSO4 were taken. The salts were
dissolved in water separately in four beakers. Small amouts of these solutions were taken in four test tubes and
a strip of copper was dipped in each of these four test tubes. Same was repeated for Ag in another set of four
test tubes, and likewise with Al and Fe strips.
Now answer the following questions choosing the correct option in each case:
(a) Which of the following reactions will take place?
i.Ag in CuSO4 solution
ii. Cu in FeSO4. solution
iii. Fe in Al2(SO4)3 solution
iv. Fe in CuSO4 solution​

Answer 1

Answer:

Sine and cosine — a.k.a., sin(θ) and cos(θ) — are functions revealing the shape of a right triangle. Looking out from a vertex with angle θ, sin(θ) is the ratio of the opposite side to the hypotenuse , while cos(θ) is the ratio of the adjacent side to the