Explanation

Explanation

Mouthwash is a homogeneous solution because its components are evenly mixed and uniform throughout.

You cannot distinguish different parts with the naked eye.

Explanation

Skimmed milk has nearly all fat removed, making it ideal for producing non-fat yogurt.

This type of yogurt contains less than 0.5% fat, suitable for low-calorie or fat-free diets.

Explanation

Dimitri Mendeleev arranged the elements in order of increasing atomic mass, creating the first widely recognized periodic table.

His arrangement helped predict properties of undiscovered elements and left gaps for them in the table.

Explanation

Neon (Ne) has an atomic number of 10, which places it in the 2nd period of the periodic table.

Periods indicate the number of electron shells; Neon has 2 shells.

Explanation

Convection is the transfer of heat through the movement of fluids (liquids or gases) due to differences in temperature and density.

It does not occur in solids as the particles in solids are not free to move.

Explanation

In an endothermic reaction, energy is absorbed, so the products have more energy than the reactants.

This results in a temperature drop in the surroundings.

Explanation

Compounds are substances made of two or more elements chemically bonded.

Baking soda (NaHCO₃), water (H₂O), and salt (NaCl) are all compounds.

Nickel and iron are elements, and salad and ink are mixtures.

Explanation

To make an uncharged object have a negative charge, we must add electrons, which carry a negative charge.

This process increases the overall negative charge of the object.

This leading to an excess of electrons over protons.

Explanation

Both CS₂ (carbon disulfide) and SO₃ (sulfur trioxide) have zero dipole moment.

Note….: Here CS 2 and SO3 options are correct. However, FPSC did not give a choice of both A and B.