It is B, smoke and air pollution can stress the lungs and cause things like Respiratory distress if not wearing a proper mask. That is why in places with massive amounts of air pollution many people will wear face masks.
The periodic table is organized by the atomic mass of the elements. It means if the element is in Group 2a in the periodic table, it has 2+ ions.
Answer:
B is sedimentary and A is metermorphic
Metallic bond is the electrostatic attraction between a positive ion and delocalised(free)electrons
In an unsaturated solution, the amount of solute is less than required in the solution. So, it can dissolve more solute.
Solid state is more dense than the liquid state as the molecules are closely packed in a solid.
Density is temperature dependent as with increase in temperature volume increases. So, the density decreases.
Like dissolves like. A polar solute will dissolve in a polar solvent.
So, the correct statement among the given options is B.For most substances, the solid state is more dense than the liquid state.
