Question

...........90 point ​

Answer 1

Answer:

Both of them are 'lines'.

LINE= In geometry, a line can be defined as a straight one- dimensional figure that has no thickness and extends endlessly in both directions. It is often described as the shortest distance between any two points. Here, P and Q are points on the line. A line segment is only a part of a line.

You can name them yourself by any two capital letters

for eg:- AS, AB, LR, ............. and so on

Explanation:

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Answer 2

A double displacement reaction is a type of chemical reaction where two compounds react, and positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products. For example, Na2S+2HCl→2NaCl+H2S.