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🌟💧 Master Your Chemistry with These Colorful MCQs on Solutions! 🚀✨| Test Your Knowledge & Level Up Your Chemistry Skills! 🌟🧪
1️⃣ An alloy is the homogeneous mixture of:🟦 A) Two solids
🟩 B) Two liquids
🟪 C) Solid and liquid
🟨 D) Two gases
2️⃣ A saturated solution of KCl on heating becomes:
🟦 A) Unsaturated
🟩 B) Supersaturated
🟪 C) Diluted
🟨 D) All of these
3️⃣ If we dissolve sand into the water, then the mixture is said to be:
🟦 A) Solution
🟩 B) Colloids
🟪 C) Concentrated solution
🟨 D) Suspension
4️⃣ Solubility is usually expressed in grams of the solute dissolved in ________ gram of a solvent:
🟦 A) 10 grams
🟩 B) 100 grams
🟪 C) 500 grams
🟨 D) 1000 grams
5️⃣ Example of heterogeneous mixture is:
🟦 A) Sugar and water
🟩 B) Sand and water
🟪 C) Salt and water
🟨 D) Ink and water
6️⃣ 2 moles of sodium chloride (NaCl) is equal to:
🟦 A) 123 grams
🟩 B) 135 grams
🟪 C) 158 grams
🟨 D) 117 grams
7️⃣ Molarity of a solution which is prepared by dissolving 40g sodium chloride in 500 cm³ of solution is:
🟦 A) 1.4M
🟩 B) 1.5M
🟪 C) 1.33M
🟨 D) 1.33M
8️⃣ 10% (w/w) sugar solution means that 10 grams of solute dissolved in:
🟦 A) 90g of water
🟩 B) 95g of water
🟪 C) 100g of water
🟨 D) 105g of water
9️⃣ An example of true solution is:
🟦 A) Solution of starch
🟩 B) Solution of soap
🟪 C) Ink in water
🟨 D) Toothpaste
🔟 Which solution contains more water?
🟦 A) 1.0M
🟩 B) 0.75M
🟪 C) 0.5M
🟨 D) 0.25M
1️⃣1️⃣ When a saturated solution is diluted, it changes into:
🟦 A) Concentrated solution
🟩 B) Unsaturated solution
🟪 C) Supersaturated solution
🟨 D) Saturated solution
1️⃣2️⃣ Butter is an example of solution:
🟦 A) Gas-liquid
🟩 B) Solid-liquid
🟪 C) Liquid-solid
🟨 D) Gas-solid
1️⃣3️⃣ A solution that contains solid solute into liquid solvent is called:
🟦 A) Solids in gas
🟩 B) Liquids in solids
🟪 C) Solids in solids
🟨 D) Solids in liquid
1️⃣4️⃣ What is the particle size in suspension?
🟦 A) 10³ nm
🟩 B) 10² nm
🟪 C) Less than 10³ nm
🟨 D) Greater than 10³ nm
1️⃣5️⃣ The solubility of a gas ……… with the rise in temperature.
🟦 A) Decreases
🟩 B) Increases
🟪 C) Remains the same
🟨 D) None of them
1️⃣6️⃣ Solution is a …….. mixture of two or more substances.
🟦 A) Compound
🟩 B) Alloy
🟪 C) Homogeneous
🟨 D) Heterogeneous
1️⃣7️⃣ ………… is the solution when the liquid solvent is water:
🟦 A) A binary
🟩 B) An aqueous
🟪 C) A ternary
🟨 D) All of them
1️⃣8️⃣ The most common solvent in nature is …………:
🟦 A) Benzene
🟩 B) Alcohol
🟪 C) Acetone
🟨 D) Water
1️⃣9️⃣ ……… is the symbol for the concentration unit of molarity.
🟦 A) M
🟩 B) m
🟪 C) X
🟨 D) N
20️⃣ 5% m/m solution contains 5 grams of solute dissolved in ………. grams of solvent:
🟦 A) 95
🟩 B) 100
🟪 C) 5
🟨 D) 90
2️⃣1️⃣ The solubility of a gas ……… with the rise in temperature.
🟦 A) Increase
🟩 B) Decrease
🟪 C) Remains same
🟨 D) None of them
2️⃣2️⃣ Solution is a …….. mixture of two or more substances.
🟦 A) Compound
🟩 B) Alloy
🟪 C) Homogeneous
🟨 D) Heterogeneous
2️⃣3️⃣ The amount of solute in gram at a given temperature dissolved in 100g of solvent is called:
🟦 A) Molarity
🟩 B) Solubility
🟪 C) Mole fraction
🟨 D) None of these
2️⃣4️⃣ ………… is the solution when the liquid solvent is water:
🟦 A) A binary solution
🟩 B) An aqueous solution
🟪 C) A ternary solution
🟨 D) All of them
2️⃣5️⃣ The most common solvent in nature is …………:
🟦 A) Benzene
🟩 B) Alcohol
🟪 C) Acetone
🟨 D) Water
2️⃣6️⃣ ……… is the symbol for the concentration unit of molarity.
🟦 A) M
🟩 B) m
🟪 C) X
🟨 D) N
2️⃣7️⃣ The sum of the mole fractions of solute and solvent is equal to:
🟦 A) 0
🟩 B) 1
🟪 C) 2
🟨 D) 4
2️⃣8️⃣ 10% M/M solution contains 10 grams of solute dissolved in ………. grams of solvent:
🟦 A) 90
🟩 B) 100
🟪 C) 10
🟨 D) 80
2️⃣9️⃣ The suspended particles in suspensions are generally of the size:
🟦 A) 10 nm
🟩 B) 1200 nm
🟪 C) 100 nm
🟨 D) 1 nm
3️⃣0️⃣ The process in which a solid directly changes to vapours is known as:
🟦 A) Boiling
🟩 B) Sublimation
🟪 C) Evaporation
🟨 D) Melting
3️⃣1️⃣ The solubility of a solid ……… with the rise in temperature.
🟦 A) Increases
🟩 B) Decreases
🟪 C) Remains same
🟨 D) None of them
3️⃣2️⃣ Which one has no unit?
🟦 A) Molarity
🟩 B) Normality
🟪 C) Mole Fraction
🟨 D) Molality
3️⃣3️⃣ The symbol of mole fraction is:
🟦 A) M
🟩 B) m
🟪 C) X
🟨 D) N
3️⃣4️⃣ Solution of known concentration is called:
🟦 A) Saturated solution
🟩 B) Standard solution
🟪 C) Unsaturated solution
🟨 D) Aqueous solution
3️⃣5️⃣ If 0.4 is the mole fraction of solute, the mole fraction of solvent would be:
🟦 A) 0.1
🟩 B) 0.6
🟪 C) 0.4
🟨 D) 1.0
3️⃣6️⃣ The concentration of the solution is the quantity of:
🟦 A) Solvent in solute
🟩 B) Solute in given solvent
🟪 C) Gas dissolved in liquid
🟨 D) None of them
3️⃣7️⃣ The concentration of a solution is expressed as the number of moles in which of the following volumes?
🟦 A) 1 L
🟩 B) 1 ml
🟪 C) 1 dL
🟨 D) 1000 L
3️⃣8️⃣ How many moles of HCl are there in 10mL of a solution with a concentration of 0.5 mol/L?
🟦 A) 5
🟩 B) 0.5
🟪 C) 0.05
🟨 D) 1
3️⃣9️⃣ What is the concentration of a 500 mL solution containing 0.3 mol of glucose?
🟦 A) 0.15 mol/L
🟩 B) 0.0006 mol/L
🟪 C) 1.67 mol/L
🟨 D) 0.6 mol/L
4️⃣0️⃣ In the air, the nitrogen gas acts as:
🟦 A) Solute
🟩 B) Solvent
🟪 C) Gaseous solute
🟨 D) Aqueous solute
4️⃣1️⃣ Solubility is the amount of solute dissolved in:
🟦 A) 50 g of solvent
🟩 B) 100 g of solvent
🟪 C) 250 g of solvent
🟨 D) 200 g of solvent
4️⃣2️⃣ The solubility of sugar in water at 100°C is:
🟦 A) 179 g/100 mL
🟩 B) 487 g/100 mL
🟪 C) 189 g/100 mL
🟨 D) 478 g/100 mL
4️⃣3️⃣ There are how many ways of representing percent concentration?
🟦 A) One
🟩 B) Two
🟪 C) Three
🟨 D) Four
4️⃣4️⃣ A molar solution contains ……… mole of solute in 1 dm³ of solution.
🟦 A) 1
🟩 B) 2
🟪 C) 3
🟨 D) 4
4️⃣5️⃣ The solution that contains 1 mole of solute in 1000 g of solvent is called:
🟦 A) Molar
🟩 B) Molal
🟪 C) Normal
🟨 D) Saturated
4️⃣6️⃣ One liter is equal to:
🟦 A) 100 cm³
🟩 B) 1000 cm³
🟪 C) 500 cm³
🟨 D) 10 cm³
4️⃣7️⃣ How many grams of Ca(OH)₂ are contained in 1500 mL of 0.0250 M Ca(OH)₂ solution?
🟦 A) 3.17 g
🟩 B) 2.34 g
🟪 C) 1.85 g
🟨 D) 2.775 g
4️⃣8️⃣ What volume of 12.6 M HCl must be added to enough water to prepare 5.00 liters of 3.00 M HCl?
🟦 A) 7.56 L
🟩 B) 21.0 L
🟪 C) 0.840 L
🟨 D) 1.19 L
4️⃣9️⃣ A = (Volume solute) / (Volume solution) x 100; Here A represents:
🟦 A) Percent by mass
🟩 B) Percent by volume
🟪 C) Molarity
🟨 D) Molality
5️⃣0️⃣ A = (Mass solute) / (Mass solution) x 100; Here A represents:
🟦 A) Percent by mass
🟩 B) Percent by volume
🟪 C) Molarity
🟨 D) Molality
5️⃣1️⃣ A = (moles solute) / (moles solute + moles solvent); Here A represents:
🟦 A) Percent by mass
🟩 B) Mole fraction
🟪 C) Molarity
🟨 D) Molality
5️⃣2️⃣ A suspension of droplets of one liquid into another in which it is not soluble is called:
🟦 A) Smoke
🟩 B) Mud
🟪 C) Foam
🟨 D) Emulsion
5️⃣3️⃣ The size of constituent particles in solution is of molecular dimension:
🟦 A) Suspension
🟩 B) Colloids
🟪 C) Solution
🟨 D) Colloidal suspension
5️⃣4️⃣ Solution =
🟦 A) Solute + Solvent
🟩 B) Solute - Solvent
🟪 C) Solute × Solvent
🟨 D) Solute / Solvent
5️⃣5️⃣ Which one of the following is a colloidal solution?
🟦 A) Milk
🟩 B) Butter
🟪 C) Jelly
🟨 D) All of them
5️⃣6️⃣ The scattering of visible light by Colloidal particles is called:
🟦 A) Tyndall effect
🟩 B) Tyndall scattering
🟪 C) Both of them
🟨 D) None of them
5️⃣7️⃣ Air is an example of ………. solution:
🟦 A) Liquid-liquid
🟩 B) Gas-liquid
🟪 C) Gas-gas
🟨 D) None of them
5️⃣8️⃣ Carbonated/aerated drinks are an example of ………. solution:
🟦 A) Gas-Solid
🟩 B) Gas-liquid
🟪 C) Gas-gas
🟨 D) None of them
5️⃣9️⃣ Cloud and Fog are examples of ………. solution:
🟦 A) Gas-Solid
🟩 B) Gas-liquid
🟪 C) Liquid-gas
🟨 D) None of them
6️⃣0️⃣ Gasoline, wine, and vinegar are examples of ………. solution:
🟦 A) Liquid-liquid
🟩 B) Gas-liquid
🟪 C) Gas-gas
🟨 D) None of them
6️⃣1️⃣ Sodium amalgam is an example of ………. solution:
🟦 A) Liquid-liquid
🟩 B) Gas-liquid
🟪 C) Liquid-solid
🟨 D) None of them
6️⃣2️⃣ Metal alloys are ………. solution:
🟦 A) Liquid-liquid
🟩 B) Solid-solid
🟪 C) Liquid-solid
🟨 D) None of them
6️⃣3️⃣ 14 karat gold is an alloy of:
🟦 A) Au and Ag
🟩 B) Au and Ni
🟪 C) Cu and Zn
🟨 D) Cu and Sn
6️⃣4️⃣ The proportion of solute in a solution is called:
🟦 A) Concentration
🟩 B) Dilution
🟪 C) Solubility
🟨 D) None of them
6️⃣5️⃣ Silver and tin amalgams are widely used to make:
🟦 A) Dental filling
🟩 B) Jewelry
🟪 C) Food preservation
🟨 D) None of them
6️⃣6️⃣ Which one of the following is a colloidal solution?
🟦 A) Blood
🟩 B) Fog
🟪 C) Smoke
🟨 D) All of them
6️⃣7️⃣ A molar solution (1 M) contains ………. of solute per liter of solution:
🟦 A) 1 mole
🟩 B) 2 moles
🟪 C) Decimole
🟨 D) Centimole
6️⃣8️⃣ One molar (1 M) NaOH solution is prepared by dissolving its …………. in 1 liter of solution:
🟦 A) 40 g
🟩 B) 4 g
🟪 C) 20 g
🟨 D) 0.4 g
6️⃣9️⃣ The solubility of sodium chloride in 100g of water at 100°C is:
🟦 A) 39.12 g
🟩 B) 36 g
🟪 C) 29.12 g
🟨 D) 49.12 g
7️⃣0️⃣ The solubility of silver chloride in 100g of water at 100°C is:
🟦 A) 39.12 g
🟩 B) 36 g
🟪 C) 0.002 g
🟨 D) 0.02 g
7️⃣1️⃣ When solute-solute or solvent-solvent interactions are much more than solute-solvent interaction, a solution will:
🟦 A) Form
🟩 B) Not form
🟪 C) Sometime form
🟨 D) None of them
7️⃣2️⃣ If solute-solute interaction is greater than solute-solvent attraction, then solute will ………… in solvent:
🟦 A) Dissolve
🟩 B) Not dissolve
🟪 C) Sometime dissolve
🟨 D) None of them
7️⃣3️⃣ Which one of the following is an example of a colloid?
🟦 A) Starch
🟩 B) Paints
🟪 C) Milk of magnesia
🟨 D) Chalk in water
7️⃣4️⃣ Which of the following shows the Tyndall effect?
🟦 A) Solution
🟩 B) Suspension
🟪 C) Colloid
🟨 D) Both B and C
7️⃣5️⃣ The solution of which of the following is called brine?
🟦 A) KCl
🟩 B) KNO3
🟪 C) NaCl
🟨 D) KBr
7️⃣6️⃣ The types of solutions are?
🟦 A) 8
🟩 B) 9
🟪 C) 4
🟨 D) 10
7️⃣7️⃣ Brass is an example of which type of solution?
🟦 A) Gas in gas
🟩 B) Liquid in liquid
🟪 C) Solid in solid
🟨 D) Liquid in solid
7️⃣8️⃣ Metal alloy is an example of which type of solution?
🟦 A) Gas in gas
🟩 B) Liquid in liquid
🟪 C) Solid in solid
🟨 D) Liquid in solid
7️⃣9️⃣ Which of the following is a solution of gas in gas?
🟦 A) Fog
🟩 B) Smoke
🟪 C) Mist
🟨 D) Ai
8️⃣0️⃣ Smoke in the air is an example of which type of solution?
🟦 A) Solid in solid
🟩 B) Gas in liquid
🟪 C) Solid in gas
🟨 D) Gas in gas
8️⃣1️⃣ Fog is an example of which type of solution?
🟦 A) Liquid in gas
🟩 B) Gas in liquid
🟪 C) Solid in gas
🟨 D) Gas in gas
8️⃣2️⃣ Example of liquid in gas is:
🟦 A) Fog
🟩 B) Water gas
🟪 C) Cold drink
🟨 D) Air
8️⃣3️⃣ Alcohol in water is an example of which solution?
🟦 A) Liquid in liquid
🟩 B) Gas in liquid
🟪 C) Solid in gas
🟨 D) Gas in gas
8️⃣4️⃣ Which of the following is a solution of liquid in solid?
🟦 A) Sugar in water
🟩 B) Milky stone
🟪 C) Fog
🟨 D) Butter
8️⃣5️⃣ Butter is an example of which type of solution?
🟦 A) Liquid in solid
🟩 B) Gas in liquid
🟪 C) Solid in gas
🟨 D) Gas in gas
8️⃣6️⃣ When a saturated solution is diluted, it turns into:
🟦 A) Super-saturated solution
🟩 B) Concentrated solution
🟪 C) Unsaturated solution
🟨 D) Saturated solution
8️⃣7️⃣ Which one of the following is soluble in carbon tetrachloride?
🟦 A) Sugar
🟩 B) NaCl
🟪 C) Grease
🟨 D) Alum
8️⃣8️⃣ Which pair of compounds is soluble?
🟦 A) Ether and water
🟩 B) Benzene and water
🟪 C) Petrol and water
🟨 D) KCl and water
8️⃣9️⃣ The solubility of which one decreases by increasing temperature?
🟦 A) KCl
🟩 B) O₂
🟪 C) Ca(OH)₂
🟨 D) KBr
9️⃣0️⃣ Whose solubility will be slightly affected by temperature?
🟦 A) KCl
🟩 B) NaCl
🟪 C) KBr
🟨 D) O₂
9️⃣1️⃣ Which of the following solution is low in water?
🟦 A) 2M
🟩 B) 1M
🟪 C) 0.5 M
🟨 D) 0.25M
9️⃣2️⃣ The volume of cm³ of solute dissolved in 100 grams of solution is called?
🟦 A) v/v%
🟩 B) v/m%
🟪 C) m/v%
🟨 D) m/m%
9️⃣3️⃣ Which solution contains more water?
🟦 A) 0.05 M
🟩 B) 0.33 M
🟪 C) 0.25M
🟨 D) 0.15M
9️⃣4️⃣ Molarity of a solution which is prepared by dissolving 40 g sodium chloride in 500 cm³ of solution is:
🟦 A) 1.4 M
🟩 B) 1.5 M
🟪 C) 1.33 M
🟨 D) 1.36 M
9️⃣5️⃣ In carbonated drinks, the state of solute is:
🟦 A) Solid
🟩 B) Liquid
🟪 C) Gas
🟨 D) All of them
9️⃣6️⃣ In fog, the state of solute is:
🟦 A) Solid
🟩 B) Liquid
🟪 C) Gas
🟨 D) All of them
9️⃣7️⃣ If 10 cm³ of alcohol is dissolved in 100 g of water, it is called:
🟦 A) m/m%
🟩 B) m/v%
🟪 C) v/m%
🟨 D) v/v%
9️⃣8️⃣ Molarity is the number of moles of solute dissolved in:
🟦 A) 1 g of solution
🟩 B) 1 dm³ of solvent
🟪 C) 100 g of solvent
🟨 D) 1 dm³ of solution
9️⃣9️⃣ If 10 cm³ of alcohol is dissolved in 100 g of water, it is called:
🟦 A) %m/m
🟩 B) %m/v
🟪 C) %v/m
🟨 D) %v/v
1️⃣0️⃣0️⃣ Tyndall effect is NOT shown by:
🟦 A) Sugar solution
🟩 B) Paints
🟪 C) Jelly
🟨 D) Chalk solution
1️⃣0️⃣1️⃣ Which one of the following is a heterogeneous mixture?
🟦 A) Milk
🟩 B) Ink
🟪 C) Milk of magnesia
🟨 D) Sugar solution
1️⃣0️⃣2️⃣ Which one of the following will show negligible effect of temperature on its solubility?
🟦 A) KCl
🟩 B) KNO3
🟪 C) NaNO3
🟨 D) NaCl
1️⃣0️⃣3️⃣ Concentration is the ratio of:
🟦 A) Solvent to solute
🟩 B) Solute to solution
🟪 C) Solvent to solution
🟨 D) Both a and b
1️⃣0️⃣4️⃣ Which one of the following is a "liquid in solid" solution?
🟦 A) Sugar in water
🟩 B) Butter
🟪 C) Opal
🟨 D) Fog
10️⃣5️⃣ Mist is an example of solution:
🟦 A) Liquid in gas
🟩 B) Gas in liquid
🟪 C) Solid in gas
🟨 D) Liquid in solid
1️⃣0️⃣6️⃣ An example of a true solution is:
🟦 A) Starch solution
🟩 B) Tooth paste
🟪 C) Soap solution
🟨 D) Ink in water
1️⃣0️⃣7️⃣ A 5 percent (m/m) sugar solution means that:
🟦 A) 5g of sugar is dissolved in 90 g of water
🟩 B) 5g of sugar is dissolved in 105 g of water
🟪 C) 5g of sugar is dissolved in 100 g of water
🟨 D) 5g of sugar is dissolved in 95 g of water
1️⃣0️⃣8️⃣ Molarity is expressed by which one of these?
🟦 A) moles per m³ solution
🟩 B) moles per cm³ solution
🟪 C) moles per dm³ solution
🟨 D) moles per kilogram solution
1️⃣0️⃣9️⃣ Tyndall effect is due to:
🟦 A) Non-scattering of beam of light
🟩 B) Passing through beam of light
🟪 C) Blockage of beam of light
🟨 D) Scattering of beam of light
1️⃣1️⃣0️⃣ A 15 percent (m/m) sugar solution means that:
🟦 A) 15g of sugar is dissolved in 85 g of water
🟩 B) 15g of sugar is dissolved in 100 g of water
🟪 C) 15g of sugar is dissolved in 115 g of water
🟨 D) 15g of sugar is dissolved in 95 g of water
💥 Answer Key & Explanations:
1️⃣ Answer: 🟪 C) Solid and liquidReason: Alloys are homogeneous mixtures of metals or solid and liquid, such as brass.
2️⃣ Answer: 🟩 B) Supersaturated
Reason: A saturated solution can become supersaturated upon heating, allowing more solute to dissolve.
3️⃣ Answer: 🟨 D) Suspension
Reason: Sand in water forms a suspension, where the particles do not dissolve.
4️⃣ Answer: 🟩 B) 100 grams
Reason: Solubility is usually expressed as grams of solute in 100 grams of solvent.
5️⃣ Answer: 🟩 B) Sand and water
Reason: A heterogeneous mixture is one where the components are not uniformly distributed, like sand in water.
6️⃣ Answer: 🟪 C) 158 grams
Reason: The molar mass of NaCl is 58.5 g/mol, so 2 moles equals 117 grams.
7️⃣ Answer: 🟪 C) 1.33M
Reason: Molarity (M) = moles of solute / liters of solution. Using this formula, the answer is 1.33M.
8️⃣ Answer: 🟩 C) 100g of water
Reason: 10% w/w means 10 grams of solute in 100 grams of solution, so the solvent is 90 grams.
9️⃣ Answer: 🟪 C) Ink in water
Reason: Ink in water forms a true solution, where the solute is completely dissolved in the solvent.
🔟 Answer: 🟩 B) 0.75M
Reason: A higher molarity means less water content, so 0.75M contains more water than 1.0M.
1️⃣1️⃣ Answer: 🟩 B) Unsaturated solution
Reason: When a saturated solution is diluted, the solute concentration decreases, making it unsaturated.
1️⃣2️⃣ Answer: 🟩 B) Solid-liquid
Reason: Butter is a solid-liquid solution as fat (solid) is dissolved in liquid.
1️⃣3️⃣ Answer: 🟨 D) Solids in liquid
Reason: A solid solute dissolves in a liquid solvent to form a solution (e.g., salt in water).
1️⃣4️⃣ Answer: 🟨 D) Greater than 10³ nm
Reason: Suspensions have large particles (greater than 10³ nm) that can be seen with the naked eye.
1️⃣5️⃣ Answer: 🟦 A) Decreases
Reason: The solubility of a gas decreases with increasing temperature because gases are less soluble in hot liquids.
1️⃣6️⃣ Answer: 🟪 C) Homogeneous
Reason: A solution is a homogeneous mixture, meaning its components are uniformly distributed.
1️⃣7️⃣ Answer: 🟩 B) An aqueous
Reason: A solution with water as the solvent is called an aqueous solution.
1️⃣8️⃣ Answer: 🟨 D) Water
Reason: Water is the most common solvent in nature, used in many chemical processes.
1️⃣9️⃣ Answer: 🟦 A) M
Reason: The symbol for molarity (moles of solute per liter of solution) is M.
2️⃣0️⃣ Answer: 🟩 B) 100
Reason: In a 5% m/m solution, 5 grams of solute is dissolved in a total of 100 grams of solution, which means the solvent is 95 grams.
2️⃣1️⃣ Answer: 🟩 B) Decrease
Reason: The solubility of a gas decreases with rising temperature because gases are less soluble in warmer liquids.
2️⃣2️⃣ Answer: 🟪 C) Homogeneous
Reason: A solution is a homogeneous mixture, meaning that the solute and solvent are uniformly mixed.
2️⃣3️⃣ Answer: 🟩 B) Solubility
Reason: Solubility is the maximum amount of solute (in grams) that can dissolve in 100g of solvent at a given temperature.
2️⃣4️⃣ Answer: 🟩 B) An aqueous solution
Reason: When water is the solvent, the solution is called an aqueous solution (e.g., salt in water).
2️⃣5️⃣ Answer: 🟨 D) Water
Reason: Water is the most common solvent in nature and is widely used in chemical processes.
2️⃣6️⃣ Answer: 🟦 A) M
Reason: Molarity is the concentration of a solution and is represented by M (moles of solute per liter of solution).
2️⃣7️⃣ Answer: 🟩 B) 1
Reason: The sum of the mole fractions of the solute and solvent always equals 1.
2️⃣8️⃣ Answer: 🟩 B) 100
Reason: In a 10% m/m solution, 10 grams of solute are dissolved in a total of 100 grams of solution, meaning the solvent is 90 grams.
2️⃣9️⃣ Answer: 🟩 B) 1200 nm
Reason: Suspended particles in a suspension are typically larger than 1000 nm (10³ nm), making them visible under a microscope.
3️⃣0️⃣ Answer: 🟩 B) Sublimation
Reason: Sublimation is the process where a solid directly changes into a gas without passing through the liquid phase (e.g., dry ice).
3️⃣1️⃣ Answer: 🟦 A) Increases
Reason: The solubility of most solids increases with an increase in temperature because the solvent molecules move faster, allowing more solute particles to dissolve.
3️⃣2️⃣ Answer: 🟪 C) Mole Fraction
Reason: Mole fraction is a dimensionless quantity, meaning it has no unit, as it is the ratio of the moles of one component to the total moles in the solution.
3️⃣3️⃣ Answer: 🟪 C) X
Reason: The symbol for mole fraction is X. It is used to represent the ratio of the number of moles of a component to the total moles of all components in the solution.
3️⃣4️⃣ Answer: 🟩 B) Standard solution
Reason: A standard solution is a solution of known concentration, commonly used for titrations and other analytical methods.
3️⃣5️⃣ Answer: 🟩 B) 0.6
Reason: If the mole fraction of the solute is 0.4, then the mole fraction of the solvent must be 1 - 0.4 = 0.6.
3️⃣6️⃣ Answer: 🟩 B) Solute in given solvent
Reason: The concentration of a solution refers to the amount of solute dissolved in a given amount of solvent.
3️⃣7️⃣ Answer: 🟦 A) 1 L
Reason: Molarity (M) is the number of moles of solute per liter of solution, so concentration is expressed in terms of moles per liter (mol/L).
3️⃣8️⃣ Answer: 🟪 C) 0.05
Reason: To find the moles, use the formula:
moles = concentration× volume (in L)
moles=0.5 mol/L×0.01 L=0.05 mol
3️⃣9️⃣ Answer: 🟦 A) 0.15 mol/L
Reason: To calculate concentration:
Concentration=molesvolume (in L)=0.3 mol0.5 L=0.15 mol/L
4️⃣0️⃣ Answer: 🟪 C) Gaseous solute
Reason: In air, nitrogen (N₂) is the gaseous solute, and the solvent is also a gas (mainly oxygen and other gases).
4️⃣1️⃣ Answer: 🟩 B) 100 g of solvent
Reason: Solubility is generally defined as the amount of solute (in grams) that can dissolve in 100 grams of solvent at a specific temperature.
4️⃣2️⃣ Answer: 🟩 B) 487 g/100 mL
Reason: The solubility of sugar in water at 100°C is around 487 g/100 mL. This shows how much sugar can dissolve in water at that high temperature.
4️⃣3️⃣ Answer: 🟪 C) Three
Reason: Percent concentration can be represented in three ways: w/w% (mass/mass), w/v% (mass/volume), and v/v% (volume/volume).
4️⃣4️⃣ Answer: 🟦 A) 1
Reason: A molar solution contains 1 mole of solute dissolved in 1 dm³ of solution. This is the definition of molarity (M).
4️⃣5️⃣ Answer: 🟩 B) Molal
Reason: A molal solution contains 1 mole of solute in 1000 g of solvent. This is the definition of molality (m).
4️⃣6️⃣ Answer: 🟩 B) 1000 cm³
Reason: 1 liter is equal to 1000 cm³ (since 1 liter = 1000 milliliters and 1 mL = 1 cm³).
4️⃣7️⃣ Answer: 🟩 B) 2.34 g
Reason: To calculate the mass of Ca(OH)₂:
Moles=0.0250 M×1.5 L=0.0375 moles
Now, molar mass of Ca(OH)₂ = 74.1 g/mol
Mass=0.0375 moles×74.1 g/mol=2.34 g
4️⃣8️⃣ Answer: 🟪 C) 0.840 L
Reason: Use the dilution equation:
C1V1=C2V2
(12.6 M)(V1)=(3.00 M)(5.00 L)
V1=(3.00)(5.00)12.6=0.840 L
4️⃣9️⃣ Answer: 🟩 B) Percent by volume
Reason: The formula represents percent by volume: the ratio of the volume of solute to the volume of the solution, multiplied by 100.
5️⃣0️⃣ Answer: 🟦 A) Percent by mass
Reason: The formula represents percent by mass, which is the ratio of the mass of solute to the mass of the solution, multiplied by 100.
5️⃣1️⃣ Answer: 🟩 B) Mole fraction
Reason: The formula represents the mole fraction, which is the ratio of the moles of solute to the total moles of solute and solvent.
5️⃣2️⃣ Answer: 🟨 D) Emulsion
Reason: An emulsion is a suspension of one liquid in another, where the liquids are not soluble in each other (e.g., oil in water or vice versa).
5️⃣3️⃣ Answer: 🟪 C) Solution
Reason: In a solution, the constituent particles (solute) are of molecular or atomic dimensions, making them invisible and completely dissolved.
5️⃣4️⃣ Answer: 🟦 A) Solute + Solvent
Reason: A solution is a homogeneous mixture of solute (the dissolved substance) and solvent (the medium that dissolves the solute).
5️⃣5️⃣ Answer: 🟨 D) All of them
Reason: Milk, butter, and jelly are all examples of colloidal solutions (where small particles are dispersed throughout another substance).
5️⃣6️⃣ Answer: 🟪 C) Both of them
Reason: The phenomenon of scattering visible light by colloidal particles is called the Tyndall effect or Tyndall scattering.
5️⃣7️⃣ Answer: 🟪 C) Gas-gas
Reason: Air is a gas-gas solution, mainly a mixture of nitrogen and oxygen gases.
5️⃣8️⃣ Answer: 🟩 B) Gas-liquid
Reason: Carbonated drinks are an example of a gas-liquid solution, where carbon dioxide gas is dissolved in a liquid.
5️⃣9️⃣ Answer: 🟩 B) Gas-liquid
Reason: Clouds and fog are examples of gas-liquid solutions, where water droplets are suspended in air.
6️⃣0️⃣ Answer: 🟦 A) Liquid-liquid
Reason: Gasoline, wine, and vinegar are all examples of liquid-liquid solutions, where one liquid is dissolved in another.
6️⃣1️⃣ Answer: 🟪 C) Liquid-solid
Reason: Sodium amalgam is a liquid-solid solution, where mercury (liquid) forms an alloy with sodium (solid).
6️⃣2️⃣ Answer: 🟩 B) Solid-solid
Reason: Metal alloys (like bronze or steel) are solid-solid solutions, where different metals are mixed in solid form.
6️⃣3️⃣ Answer: 🟩 B) Au and Ni
Reason: 14 karat gold is an alloy of gold (Au) and nickel (Ni).
6️⃣4️⃣ Answer: 🟦 A) Concentration
Reason: The proportion of solute in a solution is called its concentration.
6️⃣5️⃣ Answer: 🟦 A) Dental filling
Reason: Silver and tin amalgams are widely used in dental fillings due to their ability to form durable bonds.
6️⃣6️⃣ Answer: 🟨 D) All of them
Reason: Blood, fog, and smoke are all examples of colloidal solutions, where small particles are dispersed within another medium.
6️⃣7️⃣ Answer: 🟦 A) 1 mole
Reason: A 1 M solution contains 1 mole of solute dissolved in 1 liter of solution.
6️⃣8️⃣ Answer: 🟦 A) 40 g
Reason: To prepare a 1 M NaOH solution, you need 40 g of NaOH (molar mass = 40 g/mol) dissolved in 1 liter of solution.
6️⃣9️⃣ Answer: 🟩 B) 36 g
Reason: The solubility of sodium chloride at 100°C in 100 g of water is around 36 g.
7️⃣0️⃣ Answer: 🟪 C) 0.002 g
Reason: The solubility of silver chloride is 0.002 g
7️⃣1️⃣ Answer: 🟩 B) Not form
Reason: If solute-solute and solvent-solvent interactions are stronger than solute-solvent interactions, the solute will not dissolve in the solvent, and the solution will not form.
7️⃣2️⃣ Answer: 🟩 B) Not dissolve
Reason: If the solute-solute interactions are stronger than solute-solvent interactions, the solute will not dissolve in the solvent because the solvent cannot overcome the attractive forces between the solute particles.
7️⃣3️⃣ Answer: 🟪 C) Milk of magnesia
Reason: Milk of magnesia is a colloidal solution, where tiny particles are dispersed in water, but do not dissolve completely.
7️⃣4️⃣ Answer: 🟩 D) Both B and C
Reason: The Tyndall effect is exhibited by colloids and suspensions but not solutions. In these types, light is scattered by the dispersed particles.
7️⃣5️⃣ Answer: 🟪 C) NaCl
Reason: Brine is a saturated solution of NaCl (sodium chloride) in water.
7️⃣6️⃣ Answer: 🟩 B) 9
Reason: There are 9 types of solutions based on the phase of the solute and solvent: gas in gas, liquid in liquid, solid in solid, and combinations thereof.
7️⃣7️⃣ Answer: 🟪 C) Solid in solid
Reason: Brass is an alloy, a solid in solid solution of zinc in copper.
7️⃣8️⃣ Answer: 🟪 C) Solid in solid
Reason: A metal alloy is an example of a solid in solid solution.
7️⃣9️⃣ Answer: 🟨 D) Air
Reason: Air is an example of a gas in gas solution, with nitrogen being the solvent and oxygen and other gases being the solutes.
8️⃣0️⃣ Answer: 🟪 C) Solid in gas
Reason: Smoke is a solid in gas solution, where solid particles (e.g., soot) are dispersed in a gas (air).
8️⃣1️⃣ Answer: 🟩 B) Gas in liquid
Reason: Fog is a gas in liquid solution, where tiny water droplets are suspended in air.
8️⃣2️⃣ Answer: 🟩 B) Water gas
Reason: Water vapor or water gas is an example of liquid in gas solution.
8️⃣3️⃣ Answer: 🟦 A) Liquid in liquid
Reason: Alcohol in water forms a liquid in liquid solution where alcohol is dissolved in water.
8️⃣4️⃣ Answer: 🟨 D) Butter
Reason: Butter is a liquid in solid solution, where liquid fat is dispersed in solid milk proteins.
8️⃣5️⃣ Answer: 🟦 A) Liquid in solid
Reason: Butter is an example of a liquid in solid solution because it contains liquid fat trapped in solid form.
8️⃣6️⃣ Answer: 🟪 C) Unsaturated solution
Reason: When a saturated solution is diluted, it becomes an unsaturated solution, as the concentration of solute decreases.
8️⃣7️⃣ Answer: 🟪 C) Grease
Reason: Grease is soluble in carbon tetrachloride, which is a non-polar solvent.
8️⃣8️⃣ Answer: 🟨 D) KCl and water
Reason: KCl (potassium chloride) is highly soluble in water, as it is an ionic compound that dissociates readily in water.
8️⃣9️⃣ Answer: 🟩 B) O2
Reason: The solubility of oxygen (O2) in water decreases as the temperature increases.
9️⃣0️⃣ Answer: 🟩 B) NaCl
Reason: The solubility of NaCl (sodium chloride) is slightly affected by temperature, meaning it doesn't change significantly with small temperature variations.
9️⃣1️⃣ Answer: 🟩 B) NaCl
Reason: The solubility of NaCl (sodium chloride) is slightly affected by temperature, meaning it doesn't change significantly with small temperature variations.
9️⃣2️⃣Answer: 🟨 D) 0.25M
Reason: A 0.25M solution has the lowest concentration of solute, which means relatively more water is present compared to the higher concentration solutions like 2M.
9️⃣3️⃣ Answer: 🟩 B) v/m%
Reason: v/m% refers to the volume of solute in cm³ dissolved in 100 grams of solution.
9️⃣4️⃣ Answer: 🟦 A) 0.05 M
Reason: The 0.05 M solution has the lowest concentration of solute, so it contains the most water relative to the solute.
9️⃣5️⃣ Answer: 🟦 A) 1.4 M
Reason: To calculate molarity, we use the formula:
Molarity=moles of solute/volume of solution in L
For NaCl, the molar mass is 58.5 g/mol. Therefore:
moles of NaCl=40 g/58.5 g/mol=0.683 mol
moles of NaCl=40 g/58.5 g/mol=0.683 mol
Volume=500 cm3=0.5 L
Thus, molarity = 0.683/0.5=1.366 M≈1.4 M
9️⃣6️⃣ Answer: 🟪 C) Gas
Reason: In carbonated drinks, the solute is carbon dioxide (CO₂), which is a gas dissolved in a liquid (typically water or another solvent).
9️⃣7️⃣ Answer: 🟩 B) Liquid
Reason: Fog consists of tiny liquid water droplets suspended in the air.
9️⃣8️⃣ Answer: 🟪 C) v/m%
Reason: v/m% is the volume of solute (in cm³) divided by the mass of solvent (in grams) multiplied by 100.
9️⃣9️⃣ Answer: 🟨 D) 1 dm³ of solution
Reason: Molarity is defined as the number of moles of solute per 1 dm³ of solution (not solvent).
1️⃣0️⃣0️⃣ Answer: 🟪 C) %v/m
Reason: This is a volume/weight percentage where volume of solute (cm³) is divided by the mass of solvent (grams), multiplied by 100.
1️⃣0️⃣1️⃣ Answer r: 🟦 A) Sugar solution
Reason: Sugar solutions are true solutions, where the solute particles are very small and do not scatter light, so they do not show the Tyndall effect.
1️⃣0️⃣2️⃣ Answer: 🟦 A) Milk
Reason: Milk is a heterogeneous mixture because it contains fat globules dispersed in water, which do not dissolve fully.
1️⃣0️⃣3️⃣ Answer 🟨 D) NaCl
Reason: NaCl (sodium chloride) has a very small change in solubility with temperature, meaning its solubility is almost unaffected by temperature.
1️⃣0️⃣4️⃣Answer: 🟩 B) Solute to solution
Reason: Concentration refers to the amount of solute present in a given amount of solution.
1️⃣0️⃣5️⃣ Answer: 🟩 B) Butter
Reason: Butter is a liquid in solid solution, where liquid fat is dispersed within the solid structure of milk proteins.
1️⃣0️⃣6️⃣ Answer: 🟦 A) Liquid in gas
Reason: Mist consists of liquid droplets suspended in air, which is a liquid in gas solution.
1️⃣0️⃣7️⃣ Answer: 🟨 D) Ink in water
Reason: Ink in water forms a true solution, where the solute (dye) is completely dissolved at the molecular level.
1️⃣0️⃣8️⃣ Answer: 🟩 B) 5g of sugar is dissolved in 105 g of water
Reason: m/m% means 5g of sugar in 100g of solution. Therefore, the solution's total mass is 105g.
1️⃣0️⃣9 Answer: 🟪 C) moles per dm³ solution
Reason: Molarity is defined as the number of moles of solute per 1 dm³ of solution.
1️⃣0️⃣9 Answer: 🟨 D) Scattering of beam of light
Reason: The Tyndall effect occurs due to the scattering of light by particles in a colloidal solution.
1️⃣1️⃣0️⃣ Answer: 🟩 B) 15g of sugar is dissolved in 100 g of water
Reason: m/m% means that 15g of sugar is dissolved in a total of 100g of solution, including both solute and solvent.
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