General Science MCQs – Solutions (Job Test Preparation in Pakistan)
The substance that gets dissolved is?
The substance that gets dissolved in a solution is called the solute.
The substance that does the dissolving is?
The substance that dissolves the solute is called the solvent.
A uniform mixture of solute and solvent is?
A solution is a homogeneous mixture of solute and solvent.
What is the solute in saltwater?
In saltwater, salt is the solute that dissolves in water.
What is the solvent in saltwater?
In saltwater, water is the solvent that dissolves the salt.
Which is a true solution?
Sugar and water form a true solution because sugar dissolves completely in water.
Which liquid is called the universal solvent?
Water is known as the universal solvent because it can dissolve many substances.
A solution is what type of mixture?
A solution is a homogeneous mixture, meaning it is uniform throughout.
Which factor does not affect solubility?
Color does not affect the solubility of a substance.
A solution that cannot dissolve more solute at a given temperature is?
A saturated solution cannot dissolve more solute at a given temperature.
A solution with less solute than it can hold is?
An unsaturated solution has less solute than it can hold at a given temperature.
A solution with more solute than it normally holds is?
A supersaturated solution holds more solute than it normally can at a given temperature.
Which is not a type of solution?
Metal-liquid is not a common type of solution.
Which is a gas-gas solution?
Air is an example of a gas-gas solution.
The solubility of solids increases with?
The solubility of solids generally increases with temperature.
The solubility of gases increases with?
The solubility of gases increases with pressure.
Which process helps dissolve solute faster?
Stirring helps dissolve solute faster by increasing the contact between solute and solvent.
Which one is a colloid, not a true solution?
Milk is a colloid, not a true solution.
The ability to dissolve in a solvent is?
Solubility refers to the ability of a substance to dissolve in a solvent.
Which is a solid-solid solution?
Steel is an example of a solid-solid solution.
Soda water is an example of?
Soda water is a gas-liquid solution.
Which pair forms a miscible solution?
Alcohol and water are miscible, meaning they mix completely.
A solution with a lot of solute is?
A concentrated solution has a lot of solute.
Which one is immiscible?
Oil and water are immiscible, meaning they do not mix.
What type of solution is vinegar?
Vinegar is a liquid-liquid solution.
In alloys, metals act as?
In alloys, metals can act as either solute or solvent.
The number of components in a binary solution is?
A binary solution consists of two components: solute and solvent.
Which method separates solute from solvent?
Evaporation is a method used to separate solute from solvent.
The ratio of solute to solvent is called?
The ratio of solute to solvent is called concentration.
A solution with very little solute is?
A dilute solution has very little solute.
Which unit is used for solubility?
Solubility is often measured in grams of solute per 100 grams of solvent.
Saturated solution remains stable at?
A saturated solution remains stable at a constant temperature.
Which one is soluble in water?
Salt is soluble in water.
Solubility of gases decreases with?
The solubility of gases decreases with high temperature.
Which pair is a homogeneous solution?
Water and salt form a homogeneous solution.
Milk is best classified as?
Milk is best classified as a colloid.
The scattering of light by colloids is?
The scattering of light by colloids is called the Tyndall effect.
The movement of particles in colloids is called?
The movement of particles in colloids is called Brownian motion.
Which is not a property of true solution?
A true solution does not have visible particles.
Which solution conducts electricity?
Salt water conducts electricity because it contains ions.
Which factor increases solubility of solids?
Heating increases the solubility of solids.
A solution in which solute can still dissolve is?
An unsaturated solution can still dissolve more solute.
When no more solute can dissolve, the solution is?
When no more solute can dissolve, the solution is saturated.
Which is a common example of a liquid-liquid solution?
Alcohol and water form a common liquid-liquid solution.
What appears clear and transparent?
A true solution appears clear and transparent.
Which does not scatter light?
A true solution does not scatter light.
Which mixture is heterogeneous?
Sand and water form a heterogeneous mixture.
The process of solid solute dissolving in a liquid is?
The process of a solid solute dissolving in a liquid is called dissolution.
The dispersed phase in foam is?
In foam, the dispersed phase is gas.
The medium in a solution is usually?
The medium in a solution is usually water.