Question

Prem dropped a copper coin thinking it is water. after some time colour of liquid changes. what was the solution in beaker​

Answer 1

Answer:

Copper metal is more reactive than silver metal thus, when copper coin is kept immersed in silver nitrate solution for some time, it displaces silver from silver nitrate solution.

The reaction is :

Cu+2AgNO

3

→Cu(NO

3

)

2

+Ag

The grey solid crystal of Ag metal are seen growing on the copper coin and solution turns blue in colour.

Answer 2

Answer:

Draw a line segment PQ.

Draw an arc of any length from P, which cuts PQ at S.

Draw an arc T of length PS from S. Angle TPS is 600.

Draw two arcs from S and T, and mark their point of intersection as R. Join PR. Angle RPS is 30 degrees.